|| List of recent Carrier Frequency-related patents
| Wireless communication device|
A wireless communication device includes an antenna, a transceiver, a filter circuit and an attenuation circuit. The transceiver includes a transmission electrode and a receive electrode, and communicates with an external device through the antenna.
| Single transceiver operation|
A system and method includes a pair of voltage-controlled oscillators (vcos) that include a first vco generating a first signal associated with data transmission of a first type of wireless data signal; and a second vco generating a second signal associated with data transmission of a second type of wireless data signal, wherein the first type of wireless data signal uses a different carrier frequency than the second type of wireless data signal. The system further includes a multiplexer operatively connected to the pair of vcos that selectively outputs the first signal or the second signal to generate a selectively outputted signal; and a mixer operatively connected to the switch that combines the selectively outputted signal with at least one additional signal and outputs a composite signal.
| Method and apparatus for accessing an uplink random access channel in a single carrier frequency division multiple access system|
A method and apparatus for accessing a contention-based uplink random access channel (rach) in a single carrier frequency division multiple access (sc-fdma) system are disclosed. A wireless transmit/receive unit (wtru) randomly selects a rach subchannel and a signature among a plurality of available rach subchannels and signatures.
| Underwater connector arrangement|
An underwater connector includes a first component and a second component, wherein the components are operable to be coupled together in operation in a first coupled state, and operable to be mutually spatially separated in a second uncoupled state. The first and second components each include communication arrangements which are operable to provide wireless communication between the first and second components when in their first coupled state.
| Wide band clear air scatter doppler radar|
Systems and methods for measuring wind speed and direction in clear air conditions using a wide band doppler radar in accordance with embodiments of the invention are disclosed. In one embodiment of the invention, a wide band doppler radar system includes an antenna assembly includes at least one transmit antenna and at least one receive antenna; a transceiver connected to the antenna assembly configured to transmit a radar beam includes a transmit signal on a ka-band carrier frequency and receive a backscattered radar beam includes a carrier frequency that is frequency shifted relative to the transmitted ka-band carrier frequency of the backscattered radar beam; a data acquisition system connected to the transceiver configured to estimate a wind velocity vector by calculating a doppler shift between at least one transmitted radar beam and at least one received backscattered radar beam..
| Switching amplifier with embedded harmonic rejection filter|
A switching amplifier with an embedded harmonic rejection filter is disclosed. In an exemplary design, the switching amplifier includes a generator circuit and a plurality of output circuits.
For example in case of an ofdm multicarrier transmission system the transmission characteristics of subcarriers of a multicarrier transmission system using a plurality of antenna elements (3, 3′) can be adjusted. Particularly the power and the phase of the subcarriers can be adapted.
|Method and apparatus for transmitting/receiving multiple codewords in sc-fdma system|
The present invention relates a method and apparatus for transmitting/receiving data using multiple codewords in a communication system using sc-fdma (single carrier frequency division multiple access). A transmitter generates the multiple codewords for user data and transmits the generated multiple codewords.
|High voltage inductor filter apparatus and method of use thereof|
The invention comprises a high frequency inductor filter apparatus coupled with an inverter yielding high frequency harmonics and/or non-sixty hertz output. For example, an inductor/converter apparatus is provided that uses a silicon carbide transistor to output power having a carrier frequency, modulated by a fundamental frequency, and a set of harmonic frequencies.
|Methods and apparatus for processing audio signals|
A method for processing an audio signal (i(t)), comprises: receiving a first set (x(t)) of time-varying signals representing a first sound comprised in the audio signal (i(t)), the first set (x(t)) of time-varying signals comprising an amplitude modulation signal (a(t)), a carrier frequency signal (fc(t)), a pitch signal (f0(t)) and an fm index signal (h(t)); and modifying the first set (x(t)) of time-varying signals by modifying the amplitude of the fm index signal (h(t)), thereby providing a first modified set (x′(t)) of time-varying signals. The resulting first modified set (x′(t)) of time-varying signals may subsequently be modulated to provide an audio output signal..
|Measuring device and measuring method|
In a measurement device (1) including a measurement chamber (2), in which an electromagnetic wave (4), having a carrier frequency and modulated by a modulation frequency, acts on a sample, it is proposed to arrange an acoustic pickup (6), which is tuned to the modulation frequency, outside of the measurement chamber (2) and to connect this acoustic pickup via acoustic decoupling means (9) to the measurement chamber (2) for detecting acoustic excitations (5) generated in the sample by the acting electromagnetic wave (4).. .
|Method of selecting and broadcasting over a transmission frequency and device for the same|
In some embodiments, a method of identifying at least one transmission frequency in a set of carrier frequencies can include: (a) determining a first signal strength for each carrier frequency in the set of carrier frequencies; (b) choosing a first transmission frequency from the set of carrier frequencies at least partially based on the first signal strength of each of the carrier frequencies of the set of carrier frequencies; and (c) broadcasting electrical signals over the first transmission frequency. Other embodiments are disclosed herein..
|Automatic selection of coherent and noncoherent transmission|
A coherent or a noncoherent transmission mode is automatically selected for a transmission on the basis of an estimated doppler frequency shift due to a motion of a mobile terminal. A coherent mode is selected if a pilot signal overhead is not excessive to uniquely characterize a doppler frequency shift, as at lower carrier frequency times relative velocity products.
|Maximizing the viterbi winning path metric to estimate carrier phase offset in continuous phase modulated signals|
A system and method for estimating carrier frequency offset Δf and carrier phase offset φ0 inherent in a received cpm signal. Samples of a continuous phase modulated (cpm) signal are received.
|Maximizing the viterbi winning path metric to estimate carrier frequency and phase offsets in continuous phase modulated signals|
A system and method for estimating carrier frequency offset Δf and carrier phase offset φ0 inherent in a received cpm signal. Samples of a continuous phase modulated (cpm) signal are received.
|Method for compensating the frequency dependent phase imbalance|
A method for compensating the frequency dependent phase imbalance in a receiver is provided. The receiver downconverts an input signal to generate the signal r(t).
|Eicic carrier aggregation using extension carriers|
A first bs transmits a first set of aggregated carriers including a pcc having a first carrier frequency and an scc having a second carrier frequency. Contemporaneously, a second bs transmits a second set of aggregated carriers including a pcc having the second carrier frequency and an scc having the first carrier frequency.
|Multi-carrier transmitting apparatus and method for multicast service|
Provided are an apparatus and method for transmitting multi-carriers to provide a high-quality service to multicast-based service subscriber terminals. The method includes: mapping first data for providing the multicast service, and second data different from the first data, to s different antennas; converting the first mapped data into a first intermediate frequency (if) signal and the second mapped data into a second if signal; converting the first if signal into a first rf signal having a carrier frequency, and deciding a power intensity of the first rf signal so that the first rf signal is transmitted over the entire coverage region of the base station; and converting the second if signal into a second rf signal having the other carrier frequency, and to deciding a power intensity of the second rf signal so that the second rf signal is transmitted over a predetermined region around the base station..
|Capacitive isolated voltage domains|
In one embodiment, a method of communicating data values over a three conductor interface is provided. Different data values are transmitted by generating and transmitting three respective signals to a receiver using three conductors.
|Method, apparatus and system for carrier frequency offset estimation|
Methods, system and apparatuses for carrier frequency offset estimation are disclosed. The method includes: receiving a preamble sequence rn with a correlator and correlating the preamble sequence with a locally stored barker code bn to obtain a correlation result cn; extracting peak values from every l points in cn to form a peak value sequence xn, l being a length of a barker code that corresponds to the sampling rate; performing frequency offset estimation to xn by using at least two frequency offset estimation apparatuses, the at least two frequency offset estimation apparatuses adopting different delay parameters d; and inputting the results output from the at least two frequency offset estimation apparatuses into a frequency offset combination module to calculate a final carrier frequency offset estimate, whereby accurate frequency estimation can be achieved and an appropriate acquisition range of frequency offset can be ensured..
|Stabilized femtosecond pulsed laser and stabilization method|
The present invention relates to a high-power femtosecond pulsed laser, the laser including: a source able to generate a train of input laser pulses having an envelope frequency and a carrier frequency; a chirped pulse amplification unit; and, a unit for controlling the phase drift between the envelope frequency and the carrier frequency of the output laser pulses. According to the invention, the unit for controlling the phase drift between the envelope frequency and the carrier frequency includes electro-optical phase-modulation unit that are placed on an optical path of the chirped pulse amplification unit in order to stabilize the phase drift between the envelope frequency and the carrier frequency of the output laser pulses as a function of time..
|Method for testing an amplification path for telecommunications satellite repeater|
A method for testing an amplification path of a repeater for a satellite for broadcasting the usable signals, the amplification path making it possible to frequency amplify usable signals from a plurality of communications channels, the channels being situated in a first frequency band, the amplification path being adapted to the first band, wherein the satellite includes a signal generator of a subsystem that enables generation of telemetry data to a second transmission antenna for reception thereof on earth, the method including defining a test signal that includes the selection of a carrier frequency situated in the first frequency band; configuring the repeater to enable transmission of the signal generated by the signal generator to the amplification path; switching of the test signal amplified via the amplification path to the second transmitting antenna.. .
|Methods and receiver for positioning of clock related spurious signals|
Methods and a receiver of positioning a spurious signal for reducing the impact of the spurious signal on a received orthogonal frequency division multiplexing, ofdm signal, are presented. The method comprises determining the frequency of a spurious signal (steps 102, 204, 404), determining the frequency for the respective sub-carrier of the ofdm signal and the difference between the frequency of a sub-carrier and the frequency of a spurious signal (steps 104, 206, 406), and adjusting at least one of: the frequency of the first oscillator (step 208) and a parameter related to the frequency of a second oscillator, to decrease the frequency difference between a sub-carrier and a spurious signal (steps 106, 212, 408).
|Wideband phase modulation methods and apparatus|
A wideband phase modulator comprises a multiphase generator, a phase selector, and a phase adjuster. The wideband phase modulator is configured to receive an n-bit digital phase-modulating signal comprising a timed sequence of n-bit phase-modulating words, where n is a positive integer representing the bit resolution of the n-bit digital phase-modulating signal.
|Scheduler system for simultaneous transmit and receive|
A wireless communication system and method schedules a beginning of an uplink transmission from a wireless device to a network transceiver with a first predetermined period of time after an end of a downlink transmission from the network transceiver device to the wireless device is scheduled. The uplink transmission and the downlink transmission comprise the same carrier frequency.
|Mitigating interference in a wireless communication system|
A method of mitigating interference between carrier frequency bands of a carrier aggregation scheme. The method comprises: at a wireless device, receiving a first signal on a first carrier frequency band of the carrier aggregation scheme; mixing a second signal onto a second carrier frequency band of the carrier aggregation scheme and transmitting the second signal from the wireless device; executing code on a processing apparatus of the device to generate a reconstructed interference signal, by mixing an instance of the signal with a frequency location of an interfering harmonic from the second carrier frequency band falling in the first carrier frequency band; and removing the reconstructed interference signal from the first signal..
|Coordinated multipoint (comp) radio resource management (rrm) measurement|
A method for measurement reporting is described. A measurement configuration is received from an evolved nodeb (enb).
|Receiver-side estimation of and compensation for signal impairments|
A receiver receives a repeating or periodic signal and, based on the signal, estimates a carrier frequency offset for the receiver. Based on the signal and the estimated carrier offset, an i/o mismatch for the receiver is estimated and compensation for the estimated i/o mismatch is performed.
|Paired ofdm pilot symbols|
Successive pairs of ofdm symbols are transmitted by an ofdm transmitter and received by an ofdm receiver. The successive pairs include a first pair of ofdm symbols.
|Tunable opto-electronic oscillator having optical resonator filter operating at selected modulation sideband|
Opto-electronic oscillator (oeo) devices include an optical resonator filter to block the strong laser light at the laser carrier frequency from entering the optical resonator filter and to select one of the weak modulation sidebands, which is in resonance with the optical resonator filter, to be coupled into the optical resonator filter. The laser light at the laser carrier frequency and other modulation sidebands bypass the optical resonator filter to reach a fast photodetector.
|Method for detection of leakage or fault currents from equipment in an electrical power system|
A method of digital sampling of a current or group of currents in an electrical system including using in the sampling, sufficient bandwidth to reconstruct the amplitude and phase of a synthesized power frequency and its harmonics and a fundamental carrier frequency of switching electronics and modulation sidebands.. .
|Wide-band rf photonic receivers and other devices using two optical modes of different quality factors|
This document provides techniques, apparatus and designs for using electro-optic wgm resonators that support two different families of optical wgm modes with different quality factors in various applications. A radio frequency (rf) resonator is formed on the optical resonator and structured to supply an rf field and spatially overlaps the rf field of the rf resonator with the first and second optical whispering gallery modes to cause rf energy in the rf field at a first rf carrier frequency to couple with the first optical whispering gallery mode and rf energy in the rf field at a second rf carrier frequency to couple with the second optical whispering gallery mode..
|Signal processing apparatus and associated method|
A signal processing apparatus includes an initial detecting module, a mixer, a symbol rate detecting module, a judging module and a correcting module. The initial detecting module determines an initial carrier frequency offset of an input signal according to a spectrum of the input signal.
|System and method for fast code phase and carrier frequency acquisition in gps receiver|
A gps receiver acquires carrier frequency and gold code phase using short segments of a received gps signal. In one embodiment, a 1-ms segment of the gps signal is transformed to the frequency domain.
|Apparatus and method|
Apparatus comprises: a first correlator configured to correlate a first signal component with a first code to provide a first output, said first signal component having a carrier frequency and data; a second correlator configured to correlate a second signal component with a second code to provide a second output, said second signal component having the same carrier frequency as the first signal component and the same data as the first signal component, said data on the second signal component being delayed with respect to the data on the first signal component; and a processor configured to process the first and second outputs, said data on said first output being aligned with the second output to provide frequency information about said carrier.. .
At least one embodiment of the invention relates to a catheter arrangement comprising a catheter with a proximal section and a distal section, to measure a force acting on the distal section and simultaneously receive a temperature signal prevailing in the distal section. According to at least one embodiment of the invention, the catheter arrangement comprises an evaluation unit connected to a single combined optical force and temperature sensor, and further comprises a readout signal generator to generate and feed a readout signal modulated with a carrier frequency into the force sensor and temperature sensor.
|Carrier aggregation front end architecture|
Radio frequency (rf) front end circuitry includes a notch diplexer. The notch diplexer includes a high pass filter coupled between a high band port and an antenna port, and a low pass notch filter coupled between a low band port and the antenna port.
|Method of frequency synchronization in distributed network|
A method and apparatus for synchronizing a carrier frequency of a node included in a distributed network are provided. The apparatus includes a frequency offset estimating unit, an offset average value calculating unit, and a frequency adjustment value calculating unit.
Embodiments provide a transmitter and a method for transmitting data via a combination of a first signal modulated at a first carrier frequency, and a second signal modulated at a second carrier frequency, different to the first carrier frequency. In one embodiment the transmitter includes a local oscillator and is configured to adaptively configure the local oscillator to operate at a first local oscillator frequency and an alternative local oscillator frequency, different to the first frequency, in dependence on a required signal strength of the first signal relative to a required signal strength of the second signal..
|Method for reporting measurement capability and ue|
The disclosure discloses a method for reporting measurement capability, including: a ue reports the measurement capability of the ue to a base station, wherein the measurement capability is the capability of whether a measurement gap is required for the ue to execute different-frequency and different-system measurement when the ue operates in one frequency band or in a carrier aggregation scenario; and after acquiring the measurement capability of the ue, the base station determines whether to configure a measurement gap for the ue according to the frequency band to which carriers configured to be aggregated for the ue belong, the frequency band to which the carrier frequency for a measurement object of a currently configured measurement task belongs, and the measurement capability of the ue. The disclosure also discloses a ue correspondingly.
|Signal measurement on component carriers in wireless communication systems|
A method in a wireless communication device includes performing measurements of a first serving cell on a first carrier frequency at a first rate, determining whether a signal level of a second serving cell on a second carrier frequency exceeds a threshold, and performing measurements of the first serving cell at a second rate if the signal level of the second serving cell is below the threshold, wherein the second rate is higher than the first rate.. .