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Pilot Signal

Pilot Signal-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Synchronization assistance to a mobile station
November 02, 2017 - N°20170318549

A synchronising assisting device (14) sends an adjustment value (av) to a mobile station (12) for use when synchronising to a resource employed by the target cell (17), where the adjustment value (av) is an estimate of the change in timing required to synchronise to a reference signal interval of the resource, and processes the adjustment value (av) if an indication (iatc) of ...
Precoding information obtaining method, and device
November 02, 2017 - N°20170317795

Embodiments of the present invention provide a precoding information obtaining method and a device. The method includes: separately precoding, by a network device by using n sub-codebooks, a pilot group including k pilots to obtain n precoded pilot groups, where the sub-codebooks are subsets of a precoding codebook, the precoding codebook includes m precoding vectors, each sub-codebook includes k precoding ...
Method and apparatus for obtaining channel information in polarization division duplex systems
November 02, 2017 - N°20170317704

A method and an apparatus for acquiring channel information in a polarization division duplex system. An uplink signal transmitted from a terminal is received, the uplink signal indicating that a null subcarrier is disposed in a first subcarrier overlapped with a second subcarrier including a downlink pilot signal, and a self-interference channel is estimated by using a signal received from ...
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Signal processing apparatus, apparatus and method for monitoring channel spacing and system
Fujitsu Limited
October 26, 2017 - N°20170310440

A signal processing apparatus and method for monitoring channel spacing which may be configured in a receiver and includes: a first determining unit to determine a frequency range of a pilot of a center channel and a frequency range of a pilot of a neighboring channel using a receive signal; a second determining unit to determine a center channel frequency ...
Frequency division duplex (fdd) mimo backhaul for communication terminals
Alcatel-lucent Usa Inc.
October 26, 2017 - N°20170310436

A central node of a mimo system may transmit, to one or more communication terminals of the mimo system, a long-duration downlink pilot signal carrying a pilot sequence having a first duration. The first duration may be equal to or greater than a quantity of antennas of the central node. The central node may receive retransmitted long-duration downlink pilot signals ...
Multiuser detection for high capacity cellular downlink
Alcatel-lucent Usa Inc.
October 19, 2017 - N°20170303244

A system and method for decoding an intended transmission includes a user device that receives a downlink transmission containing a user signal intended for the user device and one or more interfering user signals directed to one or more other user devices. The user device obtains power stacking information that includes a power level for each of the user signals ...
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Methods and apparatuses for advanced receiver design
Alcatel-lucent Usa Inc.
October 19, 2017 - N°20170303147

Disclosed are embodiments of apparatuses and methods of use thereof for frequency domain (fd) chip level (cl) equalizers used in wireless receivers. The fd-cl-eq may further selectively apply a higher order matrix inverse or a lower order matrix inverse in the calculation of a channel estimate based on whether interference is present or not. Further disclosed are embodiments of methods ...
Transmit leakage cancellation in a wide bandwidth distributed antenna system
Alcatel-lucent Usa Inc.
October 19, 2017 - N°20170302327

A system and methods for cancelling transmission leakage signals in a wide bandwidth distributed antenna system (“das”) having remote units is disclosed. An internal cancellation circuit within the remote unit is employed to reduce the transmitted leakage signals by generating a cancellation signal. This cancellation signal is added to the received signal to cancel the transmission ...
Method for transmitting pilot for multiple carrier system
Lg Electronics Inc.
October 12, 2017 - N°20170295003

A method of transmitting pilot signals in a system which performs communication using two or more earners comprises transmitting first pilots and second pilots from at least one user equipment to a base station, the first and second pilots, which are transmitted from the at least one user equipment, being multiplexed by code division multiplexing, and the first and second ...
Channel measurement and feedback method, network device, and system
Huawei Technologies Co., Ltd.
October 12, 2017 - N°20170294945

Embodiments of the present invention provide a channel measurement and feedback method, a network device, and a system, and relate to the field of communications technologies. The method includes: receiving, by a first network device, pilot port configuration information sent by a second network device, where the pilot port configuration information is used to describe at least two pilot ports; ...
Channel tracking and transmit beamforming with frugal feedback
Regents Of The University Of Minnesota
October 05, 2017 - N°20170289835

In general, this disclosure describes techniques for beamforming using limited feedback that exploit the spatio-temporal channel correlation and avoid the limitations of codebook-based feedback and markov chain modeling. In one example, a receiving device includes a plurality of receive antennas for receiving communication information, a memory for storing the communication information, and one or more processors for processing the communication ...
Method of measuring interference
Lg Electronics Inc.
October 05, 2017 - N°20170288995

A method of measuring interference to perform efficient data communication is disclosed. A method of measuring interference of neighboring cells comprises allocating one or more first resource elements, to which pilot signals are allocated, to predetermined symbol regions included in a first resource block; allocating one or more second resource elements for measuring interference of the neighboring cells to a ...
Method and receiver in a wireless communication system
Huawei Technologies Co., Ltd.
October 05, 2017 - N°20170288931

A receiver and method applied to the receiver, for estimating a normalized frequency offset value ε between a transmitter and the receiver in a wireless communication system, based on orthogonal frequency division multiplexing (ofdm), where the method includes receiving a first pilot signal (yr1) and a second pilot signal (yr2), from the transmitter, determining a correlation model to be ...
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Wireless power transmitting device and method for controlling the same
Samsung Electronics Co., Ltd.
October 05, 2017 - N°20170288475

A wireless power transmitting device is provided. The wireless power transmitting device may comprise an antenna, a memory, and a processor configured to control to store, as reference information, information of a first reflected signal of a pilot signal sent out through the antenna at a first time in the memory and control to compare the reference information with information ...
Method and system for processing downlink pilot signal
Zte Corporation
September 28, 2017 - N°20170279504

A method and system for processing a downlink pilot signal is disclosed. Herein, the method includes: a receiving end detecting downlink measurement pilot ports to obtain a received signal corresponding to each downlink measurement pilot port on each receiving antenna; performing screening on the downlink measurement pilot ports according to the received signals; calculating a receiving weight vector of each ...
Enhanced local access in mobile communications using small node devices
Ntt Docomo, Inc.
September 21, 2017 - N°20170272364

A network device in a wireless communication system includes a first communication circuit that receives a first control-plane message from a base station (bs) over a first communication link; a second communication circuit that transmits user-plane data to a user equipment (ue) over a second communication link established responsive to the first control-plane message; and a third communication circuit that ...
Method and device for quantizing and feeding back channel information and precoding data
Zte Corporation
September 21, 2017 - N°20170272133

The present invention discloses methods and apparatuses for quantizing, and feeding back channel information and precoding data. In the above methods, a channel measurement pilot signal is received from a base station. The channel information is acquired by performing channel measurement according to the channel measurement pilot signal. Cmatrix1 and cmatrix2 are calculated using the channel information, herein cmatrix1 and ...
Apparatus, system and method of communicating pilot signals according to a diversity scheme
Intel Corporation
September 14, 2017 - N°20170265217

For example, a wireless station may be configured to map a plurality of data symbols to orthogonal frequency-division multiplexing (ofdm) symbols in a plurality of spatial streams, to may map a plurality of pilot sequences to the ofdm symbols according to a pilot mapping scheme, and to transmit a multi-in-multi-out (mimo) transmission based on the plurality of spatial streams.
Spectral inversion detection for polarization-division multiplexed optical transmission
Xieon Networks S.à.r.l.
September 14, 2017 - N°20170264389

Disclosed herein is a modulator (50) for polarization-division multiplexing (pdm) transmission. The modulator (50) comprises first and second dp-mzms (12, 28) associated with first and second polarizations, each dp-mzm (12, 28) having an input for an in-phase and a quadrature driving signal for modulating the in-phase and quadrature components of an optical signal according to respective transfer functions, and a detector (58) suitable for detecting light comprising ...
Pilot signal generation method and apparatus
Huawei Technologies Co. Ltd.
September 07, 2017 - N°20170257194

Embodiments of the present invention provide a pilot signal generation method and apparatus, so as to implement sharing of one pilot by multiple ues when it is ensured that each of the multiple ues can correctly obtain a data stream, thereby reducing pilot overheads. The method includes: determining a first pilot signal shared by multiple ues, where the multiple ues ...
Adaptive dual polarized mimo for dynamically moving transmitter and receiver
Facebook, Inc.
September 07, 2017 - N°20170257124

Systems and methods are presented for increasing throughput between mobile transmitters/receivers (e. G., between an unmanned aerial vehicle and a ground station) using orthogonally polarized transmission channels. The system may first calibrate the receiver and transmitter antenna pairs using pilot signals and then may update look up tables for feedforward correction. The system may decouple and predict the cross ...
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