公开(公告)号：US12126857B2

公开(公告)日：2024-10-22

申请号：US17922245

申请日：2020-04-28

申请人： LG ELECTRONICS INC.

发明人： Taewon Kim

IPC分类号： H04N21/438 ,  H04L27/01 ,  H04L27/26 ,  H04N21/414 ,  H04N21/426 ,  H04N21/43

CPC分类号： H04N21/4382 ,  H04L27/01 ,  H04L27/26 ,  H04N21/41407 ,  H04N21/42676 ,  H04N21/4302

摘要： The present disclosure relates to a signal processing device and an image display apparatus including the same. A signal processing device according to an embodiment of the present disclosure includes: a synchronizer configured to decode bootstrap data of first frame data in the received baseband signal; and an error corrector including a decoder configured to decode basic signaling data of the first frame data, and processing payload data of the first frame data is started within a first frame data period or a reception period of the first frame data. Accordingly, a data output time according to processing of frame data can be shortened.

公开(公告)号：US20240348389A1

公开(公告)日：2024-10-17

申请号：US18628558

申请日：2024-04-05

申请人： Cohere Technologies, Inc.

发明人： Yoav Hebron ,  Shlomo Selim Rakib ,  Ronny Hadani ,  Michail Tsatsanis ,  Clayton Ambrose ,  Jim Delfeld ,  Robert Fanfelle

IPC分类号： H04L5/00 ,  H04B7/005 ,  H04B17/309 ,  H04B17/373 ,  H04L25/02 ,  H04L27/01 ,  H04L27/26

CPC分类号： H04L5/0048 ,  H04B7/005 ,  H04B17/309 ,  H04B17/373 ,  H04L5/0007 ,  H04L5/0044 ,  H04L25/0202 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/01 ,  H04L27/2639 ,  H04L27/2647

摘要： Techniques for performing channel estimation in an orthogonal time, frequency and space (OTFS) communication system include receiving a wireless signal comprising a data signal portion and a pilot signal portion in which the pilot signal portion includes multiple pilot signals multiplexed together in the OTFS domain, performing two-dimensional channel estimation in a time-frequency domain based on a minimum mean square error (MMSE) optimization criterion, and recovering information bits using a channel estimate obtained from the two-dimensional channel estimation.

公开(公告)号：US20240283680A1

公开(公告)日：2024-08-22

申请号：US18644936

申请日：2024-04-24

申请人： Mellanox Technologies, Ltd.

发明人： Oz Harel ,  Hananel Faig ,  Yair Yakoby

IPC分类号： H04L25/03 ,  H04L1/00 ,  H04L1/20 ,  H04L27/01

CPC分类号： H04L25/03987 ,  H04L1/0054 ,  H04L1/203 ,  H04L27/01

摘要： A receiver to generate a first vector of a first sequence of a portion of symbols of a signal. The receiver further generates a second vector of a second sequence of the portion of symbols, wherein the second sequence comprises a flipped version of the first sequence. Based at least in part on the first vector and the second vector, a decision including a sequence of one or more bits that represent at least a portion of the signal and a confidence level corresponding to the decision are generated.

公开(公告)号：US11968146B2

公开(公告)日：2024-04-23

申请号：US17577442

申请日：2022-01-18

申请人： WISIG NETWORKS PRIVATE LIMITED

发明人： Kiran Kumar Kuchi ,  Saidhiraj Amuru

IPC分类号： H04L5/00 ,  H04L27/01

CPC分类号： H04L5/0053 ,  H04L27/01

摘要： Embodiments of the present disclosure relate to a base station (BS) and method for communication in a communication network. The method comprising signaling at least one antenna port number from multiple antenna port numbers to a UE. Also, the method comprises receiving a data and a reference signal (RS) corresponding to the UE. The data and the RS are received on one or more receive antennas of the BS, wherein the RS comprises occupied RS subcarriers and null subcarriers. A location of occupied RS subcarriers and null subcarrier positions are selected according to signaled antenna port. Next, channel parameters are estimated using the occupied subcarriers associated with the received RS, and interference plus noise parameters using the null subcarriers. Thereafter, equalizing the received data on the receive antennas using the measured channel parameters and the interference plus noise parameters for interference rejection and data detection.

公开(公告)号：US11962441B2

公开(公告)日：2024-04-16

申请号：US17814641

申请日：2022-07-25

申请人： Taiwan Semiconductor Manufacturing Company, Ltd.

发明人： Chaitanya Palusa ,  Rob Abbott ,  Wei-Li Chen ,  Po-Hsiang Lan ,  Dirk Pfaff ,  Cheng-Hsiang Hsieh

IPC分类号： H04L25/03 ,  H03K5/135 ,  H04L25/02 ,  H04L27/01 ,  H03K5/00

CPC分类号： H04L25/03878 ,  H03K5/135 ,  H04L25/028 ,  H04L25/03038 ,  H04L25/03057 ,  H04L27/01 ,  H03K2005/00052 ,  H03K2005/00065

摘要： A multi-tap Differential Feedforward Equalizer (DFFE) configuration with both precursor and postcursor taps is provided. The DFFE has reduced noise and/or crosstalk characteristics when compared to a Feedforward Equalizer (FFE) since DFFE uses decision outputs of slicers as inputs to a finite impulse response (FIR) unlike FFE which uses actual analog signal inputs. The digital outputs of the tentative decision slicers are multiplied with tap coefficients to reduce noise. Further, since digital outputs are used as the multiplier inputs, the multipliers effectively work as adders which are less complex to implement. The decisions at the outputs of the tentative decision slicers are tentative and are used in a FIR filter to equalize the signal; the equalized signal may be provided as input to the next stage slicers. The bit-error-rate (BER) of the final stage decisions are lower or better than the BER of the previous stage tentative decisions.

公开(公告)号：US11894960B2

公开(公告)日：2024-02-06

申请号：US17700710

申请日：2022-03-22

申请人： NOKIA TECHNOLOGIES OY

发明人： Faycal Ait Aoudia ,  Jakob Hoydis

IPC分类号： H04L27/01 ,  G06N20/00 ,  H04L27/26 ,  H04L25/03

CPC分类号： H04L27/01 ,  G06N20/00 ,  H04L27/26412 ,  H04L25/03165

摘要： A method comprising receiving a modulated radio signal transmitting coded information bits, performing demodulating on the modulated radio signal, wherein demodulating comprises performing orthogonal time frequency space demodulation, performing equalization on the demodulated radio signal to obtain equalized symbols, obtaining log-likelihood ratios for the coded information bits from the equalized symbols using a trained machine learning model, and reconstructing the coded information bits.

公开(公告)号：US20240031084A1

公开(公告)日：2024-01-25

申请号：US17814114

申请日：2022-07-21

申请人： QUALCOMM Incorporated

发明人： Raviteja Patchava ,  Xiaoxia Zhang ,  Junyi Li ,  Zhifei Fan ,  Jing Sun ,  Tao Luo ,  Morteza Soltani

IPC分类号： H04L5/00 ,  H04L27/01

CPC分类号： H04L5/0007 ,  H04L5/0053 ,  H04L27/01

摘要： Certain aspects of the present disclosure provide techniques for delay-Doppler processing in orthogonal frequency domain multiplexing (OFDM). A method of wireless communication includes obtaining an indication of a first resource allocation associated with a first signal; obtaining the first signal in an OFDM resource grid based at least in part on the first resource allocation; and processing the first signal in a delay-Doppler domain.

公开(公告)号：US11870620B2

公开(公告)日：2024-01-09

申请号：US17646359

申请日：2021-12-29

申请人： Bala Subramaniam

发明人： Bala Subramaniam

IPC分类号： H04L27/01 ,  H04L25/03

CPC分类号： H04L27/01 ,  H04L25/03019 ,  H04L25/03891

摘要： A receiver and method for compensating for linear impairments at a receiver including receiving an Rx signal including an asymmetric response of a satellite filter; pre-equalizing the Rx signal with a coefficient; and demodulating, after the pre-equalizing, the Rx signal.

公开(公告)号：US11838156B2

公开(公告)日：2023-12-05

申请号：US18165786

申请日：2023-02-07

申请人： Kandou Labs SA

发明人： Ali Hormati

IPC分类号： H04L27/01 ,  H04L7/00

CPC分类号： H04L27/01 ,  H04L7/0079

摘要： Methods and systems are described for generating a time-varying information signal at an output of a continuous time linear equalizer (CTLE), asynchronously sampling a data signal according to a sampling clock having a frequency less than a data rate of the data signal; generating corresponding pattern-verified samples for at least two data patterns, each of the at least two data patterns having a respective frequency content; determining corresponding frequency-specific voltage measurements associated with each of the at least two data patterns based on the corresponding pattern-verified samples of the at least two data patterns; and adjusting an equalization of the data signal based on a comparison of the corresponding frequency-specific voltage measurements.

公开(公告)号：US20230353177A1

公开(公告)日：2023-11-02

申请号：US18144342

申请日：2023-05-08

申请人： Rambus Inc.

发明人： Masum HOSSAIN ,  Nhat NGUYEN ,  Yikui Jen DONG ,  Arash ZARGARAN-YAZD ,  Wendemagegnehu BEYENE

IPC分类号： H04B1/12 ,  H04L25/03 ,  H04L25/49 ,  H04L27/06 ,  H04L27/01 ,  H04L27/00 ,  H04L25/02

CPC分类号： H04B1/123 ,  H04L25/03057 ,  H04L25/4917 ,  H04L27/06 ,  H04L27/01 ,  H04B1/12 ,  H04L27/00 ,  H04L25/03133 ,  H04L25/0264 ,  H04L25/03076

摘要： Decision feedback equalization (DFE) is used to help reduce inter-symbol interference (ISI) from a data signal received via a band-limited (or otherwise non-ideal) channel. A first PAM-4 DFE architecture has low latency from the output of the samplers to the application of the first DFE tap feedback to the input signal. This is accomplished by not decoding the sampler outputs in order to generate the feedback signal for the first DFE tap. Rather, weighted versions of the raw sampler outputs are applied directly to the input signal without further analog or digital processing. Additional PAM-4 DFE architectures use the current symbol in addition to previous symbol(s) to determine the DFE feedback signal. Another architecture transmits PAM-4 signaling using non-uniform pre-emphasis. The non-uniform pre-emphasis allows a speculative DFE receiver to resolve the transmitted PAM-4 signals with fewer comparators/samplers.