This page is updated frequently with new Modulation-related patent applications.
|| List of recent Modulation-related patents
|Radio communication apparatus and radio communication method|
In order to provide a transmission device and transmission method with which a response signal for random access preamble transmitted from a preamble transmission device is efficiently transmitted, setting unit (101) in base station (100) sets a first resource candidate group, which enables terminal (200) capable of receiving a latch response transmitted by demodulation reference signal (dmrs) transmission to be selected, and a second resource candidate group, which enables terminal (300) incapable of receiving a latch response transmitted by dmrs transmission but capable of receiving a latch response transmitted by cell-specific reference signal (crs) transmission to be selected. Control unit (103) selects dmrs transmission as the latch response transmission method when a resource in which latch preamble has been received is included in the first candidate group, but selects crs transmission as the latch response transmission method when the resource is included in the second resource candidate group..
Panasonic Intellectual Property Corporation Of America
|Physical structure and reference signal utilization of enhanced physical downlink control channel for ofdm/ofdma systems|
A two-level physical structure is defined for better diversity for both distributed and localized transmission in enhanced physical downlink control channel (epdcch). First level is a physical unit of enhanced resource element groups (eregs), where the group of res is predefined for each ereg.
|Sounding procedure including uplink multiple-user transmission in a high efficiency wireless lan|
The present disclosure relates to a sounding procedure including uplink multi-user transmission in a high efficiency wlan (hew). According to one aspect of the present disclosure, a method for transmitting a response frame by a responding station (sta) to a transmitting sta in a wireless local area network may be provided.
|System and allocating transmission resources|
Methods for wirelessly transmitting user data and control information using a plurality of transmission layers include encoding bits of control information to form control codewords and encoding bits of user data to form user data codewords. The method also includes generating a plurality of vector symbols based on the control codewords and the user data codewords.
Telefonaktiebolaget L M Ericsson (publ)
|Remote control video modulator|
A video modulator is presented. The modulator includes a video input interface, a video modulation circuit, a video output interface, a communication interface, and control circuitry.
Echostar Technologies L.l.c.
|Depth sensing method, 3d image generation method, 3d image sensor, and apparatus including the same|
A three-dimensional (3d) image sensor module including: an oscillator configured to output a distortion-compensated oscillation frequency as a driving voltage of a sine wave biased with a bias voltage; an optical shutter configured to vary transmittance of reflective light reflected from a subject, according to the driving voltage, and to modulate the reflective light into at least two optical modulation signals having different phases; and an image generator configured to generate image data about the subject, the image data including depth information that is calculated based on a difference between the phases of the at least two optical modulation signals. .
Samsung Electronics Co., Ltd.
|Two-stage light modulation for high dynamic range|
An imaging apparatus for two-stage light modulation in high-definition digital projection or cinema can include two light modulators. Each light modulator can include a multi-chip imaging system coupled to a total internal reflection prism (tir) system, which has a light input face and an on-state face.
Christie Digital Systems Usa, Inc.
|Systems and methods for software configurable air interface adaptation|
A base station may update a softai profile to obtain an updated softai profile specifying a new air interface configuration that was unknown to the base station prior to updating the softai profile. The base station may receive softai configuration information from a network controller, and update the softai profile based on the softai configuration information.
Huawei Technologies Co., Ltd.
|Method for improving spectral efficiency in wi-fi ofdm systems|
Wireless networks that use orthogonal frequency division multiplexing require a receiving device to accurately acquire and maintain synchronization with a transmitting device with respect to carrier and sampling frequency for coherent demodulation. Described herein are techniques for enabling such synchronization using pilot signals with reduced transmission overhead..
|Method and multi-carrier modulation (mcm) packet detection based on phase differences|
A method is disclosed for detecting packet at a receiving system in a multi-carrier modulation (mcm) system. The method starts with receiving a signal at the receiving system.
Enhancing modulation and coding scheme selection and medium access control (mac) protocol data unit aggregation using mac efficiency information
Methods, systems, and devices are described for wireless communications. More particularly, the described features relate to techniques for adjusting a modulation and coding scheme (mcs) to account for different airtime utilizations (available airtime actually utilized by a device for transmissions) resulting from different mcss.
Power-efficient digital wireless transmitter and operation thereof
A digital wireless transmitter and a method of transmitting a high-power modulated rf signal using a digital wireless transmitter. In one embodiment, the transmitter includes: (1) a digital system-on-a-chip configured to receive a complex digital input signal and having: (1a) an all-digital phase-locked loop and digital pulse modulator configured to modulate a phase and frequency modulation signal based on the complex digital input signal to yield a modulated complex signal, (1b) a driver configured to generate a pulse-position-modulated and pulse-width-modulated pulse train based on an instantaneous phase and amplitude of the modulated complex signal and (1c) a power supply modulation control block configured to develop an amplitude modulation control signal based on the complex digital input signal that defines a non-constant-envelope for an output signal of the transmitter.
Load modulation-based beamspace mimo transmission method and apparatus
Disclosed are a load modulation-based beamspace mimo transmission method and apparatus. The beamspace mimo transmission apparatus may include a plurality of impedance loading circuits each including a plurality of imaginary impedance devices, a beamspace mimo control unit calculating loading values of the plurality of imaginary impedance devices, corresponding to a spatial multiplexing orthogonal frequency division multiplexing (ofdm) sample, and an rf chain unit generating a first signal having a predetermined carrier frequency..
Electronics And Telecommunications Research Institute
A technique for assessing the reliability of bits received by a modulation symbol on a channel is provided. A providing circuit provides an input dataset including a plurality of input values.
Telefonaktiebolaget L M Ericsson (publ)
Optimization of optical transmission capacity
A method for transmitting a coherent optical data signal includes receiving a data signal from an interface, and encoding the data signal with a forward error correcting (fec) encoder according to a mix of modulation formats. The fec encoder generates an fec encoded signal which is used to generate modulation symbols according to the modulation formats.
Cisco Technology, Inc.
Rate indication and link adaptation for variable data rates in long range wireless networks
A method of fast link adaptation for bluetooth long-range wireless networks is provided. A data packet comprises a preamble, a first packet portion including a rate indication field, and a second packet portion including a pdu.
Enhancing modulation and coding scheme selection and medium access control protocol data unit aggregation based on under-utilization
Methods, apparatus, and computer-readable media for wireless communication by an access point (ap) may involve communicating with a station using a first modulation and coding scheme (mcs). An under-utilization of a medium access control (mac) protocol data unit (mpdu) aggregation of the station while using the first mcs may be identified.
Adaptive cyclic channel coding for orthogonal frequency division multiplexed (ofdm) systems
A method and apparatus for an orthogonal frequency division multiplexed (ofdm) communication system for communication in the presence of cyclostationary noise is provided. A receiver receives from a medium a channel measurement packet of a communication channel.
Freescale Semiconductor, Inc.
Using modulation-transcendent rf sampled digital data over an ip connection
The apparatus and methodologies used herein leverages roip to generically transport either conventional modulation (e.g., am, fm, phase or pulse) or complex modulation (e.g., gmsk, cdma, tdma, ofdm, etc.) in real time or near real time across an internet protocol link, such as gigabit ethernet (gbe). The purpose of the invention is a method of creating a live, virtual, modulation transcendent link by using an internet protocol (ip) link to extend the natural range of a connection between an rf signal source (e.g.
Iterative post-equalization for coherent optical receivers
A post-equalization technique for recovering data bits from a coherent modulation optical signal is implemented in the digital domain by iteratively performing a decision-directed least mean square channel equalization step, a digital post filter step and a maximum likelihood sequence estimation step so that the symbol decisions of the previous iteration are fed to the decision directed least mean square channel equalization step to successively improve the symbol decisions. In an experimental setup, the iterative technique demonstrated performance improvement mitigating the bandwidth limitation as compared to a corresponding non-iterative technique..
System and methods for adaptive equalization for optical modulation formats
A method for modifying the performance of an adaptive equalizer in a receiver is provided. A carrier wave comprising a first polarization state and a second polarization state, wherein there is a correlation between the first polarization state and the second polarization state, is received.
At&t Intellectual Property I, Lp
A device and a generating an electrical signal with a suppressed frequency band
Abstract disclosed herein is a notch filter and a method for generating an electrical signal with a suppressed frequency band. The filter generates an optical signal by modulating a modulation optical wave with an electrical signal to generate first and second sidebands.
The University Of Sydney
Methods and apparatuses for sending and receiving signal, and system
The present invention relates to the field of mobile communications technologies. The methods for sending and receiving a signal are specifically: splitting a received digital signal into a first digital signal and a second digital signal, respectively converting the first digital signal and the second digital signal into an analog in-phase signal and an analog quadrature signal, respectively modulating the analog in-phase signal and the analog quadrature signal to two optical signals that are perpendicular to each other and are in a polarization state, combining, into one optical signal, the two optical signals that are perpendicular to each other and are in a polarization state, and sending the optical signal to an onu; and performing, by the onu, corresponding demodulation on the optical signal, and sending the optical signal to a user terminal..
Huawei Technologies Co., Ltd.
Led light dongle communication system
A universal serial bus (usb) dongle may include an optical transceiver having a usb interface for engagement to an electronic device such as a laptop computer or other usb-configured device. The usb dongle may include a converter or buffering, isolation, modulation or amplification circuitry.
Federal Law Enforcement Development Services, Inc.
Determination of an optical signal to noise ratio of a dual-polarization optical signal
A method is provided for determining an optical signal to noise ratio of a dual polarization optical signal. The method includes: detecting, in the dual polarization optical signal, a modulation signal which modulates, at at least one low amplitude level that is approximately zero and at a high amplitude level, the dual polarization optical signal, and determining the optical signal to noise ratio from a measurement of the power of the modulation signal..
Optical phase noise extracting device and optical phase noise extraction method
An apparatus includes: a first measurer configured to measure first phase data indicating a temporal variation in a phase of a non-transferred signal that is an optical signal modulated by an optical phase modulation scheme and output from a transmitting device to an optical transmission path as the non-transferred signal; a second measurer configured to second phase data indicating a temporal variation in the phase of the optical signal transferred by the optical transmission path as a transferred signal on a side of a receiving device; a generator configured to generate differential data indicating a difference between the first phase data and the second phase data; and an extractor configured to use the differential data to extract, from the optical signal on the side of the receiving device, optical phase noise generated due to the optical transmission path.. .
Mobile device transmitter and methods for transmitting signals in different signal dimensions for 3gpp lte
Embodiments of a mobile device transmitter and methods for transmitting signals in different signal dimensions are generally disclosed herein. The mobile device transmitter comprises a mapper to map a block of two or more input modulation symbols to different signal dimensions comprising two or more spatial dimensions, and linear transform circuitry to perform a linear transform on the block of mapped input modulation symbols to generate a block of precoded complex-valued output symbols such that each output symbol carries some information of more than one input modulation symbol.
Method of allocating resources for transmitting uplink signal in mimo wireless communication system and apparatus thereof
A method and terminal are described for allocating resources for transmitting a signal in a multiple-input multiple-output (mimo) wireless communication system. An uplink signal is transmitted using l layers at a terminal in a multiple-input multiple-output (mimo) wireless communication system.
Lg Electronics Inc.
Systems and methods for inductively coupled communications
A method for inductively coupled communications is described. The method includes generating a retransmitted modulated signal that is stronger than a received signal from a first device.
Receiver with orthogonal beam forming technique
A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated.
Spatial Digital Systems, Inc.
Supply modulation for radio frequency power amplification
The subject matter described herein relates to supply modulation for power amplification. In one embodiment, the voltage level of the envelope with a tunable threshold voltage.
The present invention relates to a photovoltaic inverter capable of reducing a leakage current and a switching loss by changing a pulse width modulation (pwm) method and a configuration of an output filter. To this end, the photovoltaic inverter includes a direct-current (dc) link capacitor connected in parallel to a photovoltaic module, a switch unit including first to fourth switches and operating by a half unipolar switching method, and a reactor having one end connected to another end of the first switch and one end of the second switch, and another end connected to a grid, the reactor having a predetermined inductance..
Lsis Co., Ltd.
Vehicle control device and railroad vehicle
A vehicle control device according to one embodiment includes an inverter converting a dc power to a three-phase ac power and supplying the three-phase ac power to a motor driving a vehicle. A detector detects a current value between the inverter and the motor.
Kabushiki Kaisha Toshiba
Seven-level inverter apparatus
It is composed of a three-phase three-level inverter 1, three single-phase five-level inverters 2, each of which is connected in series with an output of each phase of the three-phase three-level inverter 1, and pulse width modulation control means 8 provided for each phase which supplies gate pulses to the three-level inverter 1 and the single-phase five-level inverter 2 of the relevant phase. State transition means 84 which determines an output of a switching leg of the three-level inverter 1, and outputs of outside and inside switching legs of the single-phase five-level inverter based on transition of a voltage level created by the pulse width modulation control means 8, makes all of the three outputs of the three-level inverter 1, and the outside and inside switching legs of the single-phase five-level inverter 20 or positive, when the voltage level is positive, makes all of the outputs of these three legs 0 or negative, when the voltage level is negative, and makes all of the outputs of these three legs 0, when the voltage level is 0..
Toshiba Mitsubishi-electric Industrial Systems Cor Poration
Output current monitor circuit for switching regulator
A circuit and method for providing switching regulation with an improved current monitor comprising a pulse width modulation (pwm) controller configured to provide an output signal voltage, an output stage configured to provide switching comprising a first and second transistor, and first inverter, a sense circuit configured to provide signal sensing from said output stage, a sampling switch circuit configured to provide sample signals from said sense circuit, a differential integrator circuit configured to provide sample signals from said sampling switch circuit, a comparator configured to provide signals from said integrator circuit, a control logic circuit configured to provide signals from said comparator, a current digital-to-analog converter (dac) configured to provide feedback signal from said control logic circuit, and, a digital filter configured to provide output current information.. .
Dialog Semiconductor (uk) Limited
Energy conversion device and making and using same
An energy conversion device comprises an apparatus and a method for employing energy from an electron- and, optionally, photon-containing energy wave that is induced in one or more aggregated molecular ensembles. Emission is stimulated from the ensembles by a wide variety of energy inputs, and energy derived from this electron and/or photon energy wave is useful for modulation of signals in circuits; performing chemical reduction reactions; and performing as an energy conversion device, e.g., as a photovoltaic energy converter.
Driving circuit for electrophoretic display, implementation method thereof and electrophoretic display device
The present disclosure discloses a driving circuit for electrophoretic display, including a data line driving integrated circuit and a gate line driving integrated circuit, characterized in that the output terminal of each data line in the data line driving integrated circuit is configured with a modulation unit including a thermosensitive element, and the modulation unit adjusts the pulse width of the voltage signal outputted at the output terminal of the data line according to change of temperature to realize temperature compensation for the dielectric characteristic of the electrophoretic film of the electrophoretic display. The present disclosure also discloses an implementation method of the driving circuit and an electrophoretic display device.
Beijing Boe Optoelectronics Technology Co., Ltd.
Organic light emitting display device and driving the same
An organic light emitting display device includes: a display panel including a plurality of sub-pixels, each of the sub-pixels including an organic light emitting device to be light-emitted by a data current based on a data voltage; a memory to store accumulated data to be displayed on each of the sub-pixels; a deterioration compensator including: a compensation scheme determiner; a compensation amount calculator; and a modulation data generation generator; a timing controller to arrange the modulation data of each of the sub-pixels as pixel data according to a pixel arrangement structure of the display panel; and a data driver to convert the pixel data into the data voltage.. .
Samsung Display Co., Ltd.
Capacitive fingerprint sensor with quadrature demodulator and multiphase scanning
A fingerprint sensing circuit, system, and method is disclosed. The fingerprint sensor maybe include a plurality of inputs coupled to a plurality of fingerprint sensing electrodes and to an analog front end.
Cypress Semiconductor Corporation
Projector display systems having non-mechanical mirror beam steering
Dual or multi-modulation display system are disclosed that comprise projector systems with at least one modulator that may employ non-mechanical beam steering modulation. Many embodiments disclosed herein employ a non-mechanical beam steering and/or polarizer to provide for a highlights modulator..
Dolby Laboratories Licensing Corporation
Multi-electrode photonic digital to analog converting vector modulator
A digital-electronic-to-analog-optical converter, which has a structure consistent with a super-mach-zehnder interferometer, and which can perform the functionalities of both a digital to analog converter (dac) and a digital modulator uses a sub-mach-zender modulator to modulate optical wave signals propagating through its optical waveguide in a push-pull manner. The modulation performed is phase modulation realized with electrodes positioned near the optical wave guide where such electrodes carry modulation signals in digital, analog or discrete time signal format creating electromagnetic or electric fields that engage the optical wave signals traveling through the waveguide thus imparting a phase shift onto the optical wave signals.
Alcatel-lucent Usa Inc.
Electro-optical single crystal element, the preparation thereof, and systems employing the same
The present invention relates to an electro-optical (e-o) crystal elements, their applications and the processes for the preparation thereof. More specifically, the present invention relates to the e-o crystal elements (which can be made from doped or un-doped pmn-pt, pin-pmn-pt or pzn-pt ferroelectric crystals) showing super-high linear e-o coefficient γc, e.g., transverse effective linear e-o coefficient γtc more than 1100 pm/v and longitudinal effective linear e-o coefficient γlc up to 527 pm/v, which results in a very low half-wavelength voltage vlπ below 200v and vtπ below about 87v in a wide number of modulation, communication, laser, and industrial uses..
Low power laser sensing
The presently disclosed subject matter includes a laser system and a respective method of detecting a signal reflected from a target illuminated by a modulated cw light source configured to generate a modulated laser signal at a predefined modulation frequency. A signal comprising true laser signal portions reflected from said target, and noise is received; the signal is filtered for selecting laser signal portions at a modulation frequency band; and the true signal portions in the signal are detected, if the energy at the modulation frequency band is greater than a given threshold..
Israel Aerospace Industries Ltd.
Inhibitors of fatty acid amide hydrolase and monoacylglycerol lipase for modulation of cannabinoid receptors
Disclosed are compounds and compositions that inhibit the action of fatty acid amide hydrolase (faah) and monoacylglycerol lipase (mgl), methods of inhibiting faah and mgl, methods of modulating cannabinoid receptors, and methods of treating various disorders related to modulation of cannabinoid receptors.. .
Apparatus and analysis of a fluid sample
An method for analyzing a fluid comprises collecting a sample of the fluid and exposing the fluid sample to a light of a predetermined wavelength at a predetermined modulation frequency. An acoustic signal caused by the interaction of the light and the fluid sample is sensed, and the sensed acoustic signal is related to at least one component of the fluid..
Halliburton Energy Services, Inc.
Optical sensor device
An optical sensor device includes a light emitter for emitting, to a living body, lights having two wavelengths and blinking at a predetermined frequency, and a light receiver for receiving the lights from the living body. The light receiver outputs first and second detection signals corresponding to the respective wavelengths.
Murata Manufacturing Co., Ltd.
Optical impedance modulation for fuel quantity measurement
Systems and methods that use an optical impedance sensor that eliminates electricity for measuring fuel quantity in fuel tanks. The optical impedance sensor comprises two optical fibers spaced apart inside a meniscus tube, one to transmit light along its length and the other to receive light along its length.
The Boeing Company
Reduced power consumption with sensors transmitting data using current modulation
An engine control system operates to communicate via a sensor link with one or more sensors in a vehicle based on different communication protocols. The sensors alter communication protocols for communicating via the sensor link to an engine control unit to reduce or increase a current consumption according to one or more predetermined criteria.
Infineon Technologies Ag
Antisense compounds and uses thereof
The present disclosure provides oligomeric compounds. Certain such oligomeric compounds are useful for hybridizing to a complementary nucleic acid, including but not limited, to nucleic acids in a cell.
Isis Pharmaceuticals, Inc.
Methods and compositions for rna-directed target dna modification and for rna-directed modulation of transcription
The present disclosure provides a dna-targeting rna that comprises a targeting sequence and, together with a modifying polypeptide, provides for site-specific modification of a target dna and/or a polypeptide associated with the target dna. The present disclosure further provides site-specific modifying polypeptides.
University Of Vienna
Chromane and chromene derivatives and their use as crac modulators
The invention relates to compounds of formula (i) and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their use in medicine for the treatment of diseases, disorders associated with the modulation of calcium release-activated calcium (crac) channel. The invention also relates to pharmaceutical compositions containing such compounds in treating diseases disorders associated with calcium release-activated calcium (crac) channel modulators..
Substituted benzoazepines as toll-like receptor modulators
Provided are compositions and methods useful for modulation of signaling through the toll-like receptors tlr7 and/or tlr8. The compositions and methods have use in treating or preventing disease, including cancer, autoimmune disease, infectious disease, inflammatory disorder, graft rejection, and graft-verses-host disease..
Array Biopharma, Inc.
Liquid nitrogen jet stream processing of substrates
The present disclosure relates to processing a substrate including at least one sheet of paper, cardboard or carton by directing a jet stream of liquid nitrogen to a surface of the substrate via a jet nozzle; and by moving the jet nozzle at a distance from the surface. The jet stream can be unmodulated or modulated.
Hewlett-packard Industrial Printing Ltd.
Materials for positive cathepsin b modulation and methods of use for treating mild cognitive impairment (mci), early dementia, a-synucleinopathy, traumatic brain injury, cardiomyopathy, eye disease and skin damage
The present invention provides methods for treating a subject afflicted with i) mild cognitive impairment (mci), ii) early dementia, iii) early α-synucleinopathy, iv) traumatic brain injury, v) cardiomyopathy, vi) eye disease, or vii) skin damage, comprising administering to the subject at least one compound that increases the level of active cathepsin b in cells of the subject, or a pharmaceutically acceptable salt or ester thereof, in an amount that is effective to treat the subject. The present invention also provides compositions for treating a subject afflicted with i) mild cognitive impairment (mci), ii) early dementia, iii) early α-synucleinopathy, iv) traumatic brain injury, v) cardiomyopathy, vi) eye disease, or vii) skin damage..
University Of North Carolina At Pembroke
Therapeutic approaches for treating alzheimer disease and related disorders through a modulation of synapse function
Compositions and methods for the treatment of alzheimer's disease and related disorders. More particularly, disclosed are combined therapies that modulate synapse function for treating the disease..
Method for treating a neurodegenerative event
A method of neuroprotection or treating or healing a wound, orifice, surgical site or a neurodegenerative event in an individual or animal via modulation of at least one neurotrophin by administering a therapeutically effective amount of at least one fatty acid amide hydrolase (faah) inhibitor or a physiologically acceptable salt thereof to the individual or animal. Administration of the at least one faah inhibitor may be via release from an article of manufacture that includes a support..
Controlled release delivery system for nasal applications and treatment
This invention relates to a gel formulation for nasal administration of a controlled release formulation of hormones to the systemic circulation and/or to the brain. The special lipophilic or partly lipophilic system of the invention leads to higher bioavailability of the active ingredient caused by sustained serum levels in plasma but also leads to a more favorable serum level profile.
Mattern Pharma Ag
A3 adenosine receptor ligands for modulation of pigmentation
The present invention relates to compositions and methods for modulating melanin production, secretion and/or accumulation in human skin cells. In particular, the present invention relates to the use of a3 adenosine receptor antagonists in compositions and methods for the treatment and amelioration of hyper-pigmentation conditions and for the lightening of skin, and to the use of a3 adenosine receptor agonists in compositions and methods for the treatment and amelioration of hypo-pigmentation conditions and for the tanning of skin..
Oradin Pharmaceutical Ltd.
Neuromodulation catheters with shafts for enhanced flexibility and control and associated devices, systems, and methods
Neuromodulation catheters with shafts for enhanced flexibility and control and associated devices, systems, and methods are disclosed herein. A neuromodulation catheter configured in accordance with some embodiments of the present technology can include, for example, an elongated shaft having a distal end portion and a mandrel extending at least along the distal end portion.
Medtronic Ardian Luxembourg S.a.r.l.
System and nervous system modulation
A method for nervous system modulation includes operatively connecting an ecg cable having a plurality of surface electrodes to a body of a patient, introducing a catheter having a plurality of catheter electrodes into a blood vessel of the patient, probing a target location within the patient with the catheter to identify nerve tissue with maximum signal propagation in real-time, and reducing signal propagation in the identified nerve tissue.. .
General Electric Company
Modulating x-ray radiation dose in ct scan
A method for modulating x-ray radiation dose in ct scan is disclosed. The method may include: acquiring x-ray attenuation information of each z position within a planned scanning sequence for a scan region of a subject from data of a finished scanning sequence for the subject; and then, based on the acquired x-ray attenuation information, performing dose modulation with respect to the xy scanning profile at each z position within the planned scanning sequence.
Shenyang Neusoft Medicals Co., Ltd.
Systems and methods for determining respiration information using phase locked loop
A patient monitoring system may receive a physiological signal such as a photoplethysmograph (ppg) signal that exhibits frequency and amplitude modulation based on respiration. A phase locked loop may generate a frequency demodulated signal and an amplitude demodulated signal from the ppg signal.
Nellcor Puritan Bennett Ireland
Terminal device, base station device and radio communication method
In a radio communication system using occ for dmrs, a base station apparatus correctly receives pusch. If a first mode is set in which a demodulation reference signal of a physical uplink shared channel is multiplied by an orthogonal code determined in advance or if a temporary c-rnti was used for a transmission of downlink control information, the demodulation reference signal of the physical uplink shared channel is multiplied by the orthogonal code determined in advance, and if a second mode is set in which the demodulation reference signal of the physical uplink shared channel is multiplied by an orthogonal code determined on the basis of cyclic shift information in the downlink control information and moreover, if an rnti other than the temporary c-rnti was used for the transmission of the downlink control information, the demodulation reference signal of the physical uplink shared channel is multiplied by the orthogonal code determined on the basis of the cyclic shift information in the downlink control information..
Sharp Kabushiki Kaisha
Method and transmitting a reference signal in a multl-antenna system
A method is provided for transmitting, by a user equipment (ue), a demodulation reference signal (dmrs) in a wireless communication system. A first dmrs sequence, which is associated with a first layer, and a second dmrs sequence, which is associated with a second layer, are transmitted to a base station.
Lg Electronics Inc.
Terminal apparatus and control channel decoding method
A wireless communication base station apparatus that allows the number of times of blind decodings at a mobile station to be reduced without increasing the overhead caused by notifying information. In this apparatus, a cce allocation part allocates allocation information allocated to a pdcch received from modulation parts to a particular one of a plurality of search spaces that is corresponding to a cce aggregation size of the pdcch.
Panasonic Intellectual Property Corporation Of America
Wireless sound transmission system and method
A system for providing sound to at least one user, with at least one audio signal source, a digital transmission unit applying a digital modulation scheme to transmit an audio signal via a wireless digital audio link; at least one receiver unit for receiving audio signals from the transmission unit, and an arrangement for stimulating the hearing of the user(s), the transmission unit transmitting each audio data packet according to an adaptive frequency hopping scheme and has a channel traffic detection unit for measuring the power in each channel of a monitored channel set and providing a channel traffic value for each channel based on the measured power, an interference detection unit for analyzing and deciding whether static interference is present, and determining the channel corresponding to the peak channel traffic, and a channel blanking unit for temporarily removing at least the channel corresponding to the peak channel.. .
Differential current mode low latency modulation and demodulation for chip-to-chip connection
A chip-to-chip communications circuit which is particularly well-suited for short range communication (less than a few inches) from one integrated circuit (chip) to another is presented. The circuits preferably utilize multi-frequency quadrature amplitude modulation (qam) mechanisms for converting digital data bits from a parallel form into a serial analog stream for communication over a chip i/o connection.
The Regents Of The University Of California
Control information transmission method and sending and receiving device
Disclosed are a method for transferring control information, a transmitting device and a receiving device, the method includes that: a transmitting end orderly selects an element yn or two elements y2m-1, y2m, from a sequence y to be modulated corresponding to control information b newly added, then it selects pairing elements x2p-1, x2p from a sequence x to be modulated corresponding to related control information a, and groups yn or y2m-1, y2m and the x2p-1, x2p into an element group (x2p-1, x2p, yn) or (x2p-1, x2p, y2m-1, y2m) and maps (x2p-1, x2p, yn) or (x2p-1, x2p, y2m-1, y2m) as specified constellation points of a specified constellation diagram, and takes the constellation points as modulation symbols; it takes each two elements in the elements of the sequence x which are not used for pairing as an element group to perform qpsk modulation, modulating into qpsk modulation symbols; and it maps the constellation points and the qpsk modulation symbols to part of or all resources occupied by a corresponding control channel to be transmitted.. .
Method to minimize interference into legacy sdars reception by varying overlay modulating as a function of satellite position
In exemplary embodiments of the present invention, a degree of hierarchical modulation can be varied as a function of satellite position, which can be related to time of day, and where such hierarchical modulation can be a combination of phase and amplitude shifts. In exemplary embodiments of the present invention, as each satellite in a multiple satellite system broadcasting to north america moves towards a d-node or an a-node position, the offset angle of a phase-based hierarchical modulation scheme can be varied.
Sirius Xm Radio Inc.
Receiving apparatus and demodulation method
This receiving apparatus achieves circuit size reduction and consumption power reduction, while still having an advantage of high-speed processing. In a receiving apparatus (100), a frequency component detector (105) has a fourier conversion operation unit provided therein, and performs high-speed fourier conversion with respect to digital signals outputted from an adc (104), said high-speed fourier conversion being performed within a range instructed by means of an operation range control unit (106), and the frequency component detector detects a plurality of frequency components (fft signals) of the digital signals.
Demodulation reference signal based channel state information feedback in ofdm-mimo systems
A method and apparatus for using demodulation reference signal (dm-rs) based channel state information (csi) feedback in orthogonal frequency division multiplexing-multiple-input multiple-output (ofdm-mimo) systems is disclosed. A wireless transmit/receive unit (wtru) may include: a receiver configured to receive broadcast information from an enodeb, wherein the broadcast information is received by a plurality of wtrus; and a processor configured to derive, from the received broadcast information, physical resource blocks having demodulation reference signals (dm-rs) and precoding information of the dm-rs; the receiver and the processor further configured to derive a channel estimation using the dm-rs received in the physical resource blocks, wherein the plurality of wtrus derive a channel estimation using the dm-rs received in the physical resource blocks..
Interdigital Patent Holdings, Inc.
Optical transmitter and method to control the same
An optical transmitter that outputs a wavelength multiplexed signal that multiplexing sub-signals generated by respective lds. The bias current and the modulation current supplied to the ld are determined such that the sub-signal transmitting the optical multiplexer shows optical power independent of the temperature, and adjusted such that the extinction ratio and the average power of the sub-signal transmitting the optical multiplexer satisfy the preset condition by sensing the sub-signal in upstream of the optical multiplexer..
Sumitomo Electric Industries, Ltd.
Light detection system and method
There is provided a light detection system which is capable of determining in light embedded codes by detecting light in a scene which is illuminated by an illumination system (110) comprising one or more light sources (111,112,113) each providing a light contribution (i111, i112, i113) comprising an embedded code (id#1, id#2, id#3) emitted as a temporal sequence of modulations in a characteristics of the light emitted. The light detection system comprises light detection means (220), which are arranged for acquiring at least one image of the scene, where the image is acquired a plurality of temporal shifted line instances.
Koninklijke Philips N.v.
Optical orthogonal frequency division multiplexing (o-ofdm) system with pulse-width modulation (pwm) dimming
An optical orthogonal frequency division multiplexing (o-ofdm) system with pulse-width modulation (pwm) dimming includes a driver responsive to one or more predetermined dimming set points configured to generate pwm signals having a predetermined duty cycle and configured to supply current to one or more light emitting diodes (leds). An o-ofdm generator responsive to the one or more predetermined dimming set points and digital data is configured to generate digital inverted o-ofdm signals during on-states of the pwm signals and non-inverted o-ofdm signals during off-states of the pwm signals according to the predetermined duty cycle and convert the digital inverted o-ofdm signals and the digital non-inverted o-ofdm signals to analog output o-ofdm signals.
Trustees Of Boston University
Methods and devices for determining intermodulation distortions
A method (300) for determining inter-modulation distortions products of a mixing stage includes: driving (301) a signal input of the mixing stage based on an input signal, wherein an amplitude of the input signal is switched between a first level and a second level, and wherein a frequency of switching the amplitude is smaller than a frequency of the input signal; detecting (302) at a signal output of the mixing stage a first output signal responsive to the driving of the signal input with the input signal, wherein the amplitude of the input signal is switched to the first level, and a second output signal responsive to the driving of the signal input with the input signal, wherein the amplitude of the input signal is switched to the second level; and determining (303) the inter-modulation distortions based on the first output signal and the second output signal.. .
Intel Ip Corporation
Apparatus and canceling inter-modulation products
The present disclosure provides an apparatus and a method for canceling inter-modulation (im) products in a transceiver. The apparatus includes: a pre-distortion circuit configured to estimate a first im product caused by a transmission signal and pre-distort the transmission signal to cancel the first im product; an im product calculator configured to calculate a second im product caused by the transmission signal in a received signal based on the first im product; and a subtractor configured to subtract the second im product from the received signal..
Telefonaktiebolaget L M Ericsson
Pulse density modulation digital-to-analog converter with triangle wave generation
A phase accumulator style circuit generates an output stream of pulses. The density of the pulse stream is proportional to the input data value relative to the maximum value supported by the bit width of an adder.
Microchip Technology Incorporated
An input/output (i/o) module is configured to connect a controller and a field device. The i/o module includes a pwm (pulse width modulation) demodulator configured to demodulate a pwm signal that is input from the controller, a current source configured to output a current based on an output signal of the pwm demodulator to the field device, a resistance connected in line with the current source, and a feedback circuit configured to feed back an output current of the current source to the pwm demodulator via the controller..
Yokogawa Electric Corporation
Pwm modulation device and sound signal output apparatus
A pwm modulation device includes: a pwm modulator which receives upper n bits of an (n+1)-bit output from a noise shaper; a rising/falling edge detector which receives a pwm output signal of the pwm modulator and detects a rising/falling edge; a delay circuit which receives the pwm output signal, delays the pwm output signal by a predetermined delay time and outputs a pwm output delay signal; an and gate which receives the lower one bit output from the noise shaper and an output control signal of the rising/falling edge detector; and a selector which receives a signal obtained as a result of an and operation by the and gate for the output control signal and the lower one bit and selects one of the pwm output signal and the pwm output delay signal.. .
Rohm Co., Ltd.
Class d power driver peripheral
A class d peripheral is integrated with a microcontroller as a general purpose driver for providing many different class d power applications such as motor and solenoid control, audio amplification, etc. Use of a simple triangle waveform (saw tooth) oscillator normally used for detecting changes in capacitance values in combination with a voltage comparator provides inexpensive generation of pulse width modulation (pwm) suitable for a wide range of class d power applications.
Microchip Technology Incorporated
Power control apparatus with dynamic adjustment of driving capability
A power control apparatus with dynamical adjustment of driving capability for converting an input power into an output power includes a transformer, a switch transistor connected to the transformer, a pulsed width modulation (pwm) driving controller generating a pwm signal and connected to the switch transistor, an isolation element, an output diode and an output capacitor. The first side coil of the transformer and the switch transistor are connected to the input power, the second side coil of the transformer is connected to the output diode and further connected to the output capacitor and an external load.
Inno-tech Co., Ltd.