公开(公告)号：US20240243840A1

公开(公告)日：2024-07-18

申请号：US18563020

申请日：2021-07-07

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Wei LIU ,  Kexin XIAO ,  Changlong XU ,  Ori SHENTAL ,  Thomas Joseph RICHARDSON ,  Hao XU

IPC: H04L1/00

CPC classification number: H04L1/0042 ,  H04L1/0003

Abstract: In a probabilistic amplitude shaping (PAS) system, a distribution matching (DM) component may receive a uniform bit sequence with equal probabilities, which may be converted into symbols with a desired probability distribution (e.g., Gaussian). For example, the probability distribution may use inner constellation points associated with a lower energy and/or power more frequently and outer constellation points associated with a higher energy and/or power less frequently. In general, the DM component may map binary bits to positive amplitudes with a non-uniform distribution according to a DM rate that is based at least in part on a signal-to-noise ratio (SNR), which may vary significantly in a spatial and frequency selective wireless channel. Accordingly, some aspects described herein relate to configuring DM parameters and codeword and resource mappings in a spatial and frequency selective wireless channel.

公开(公告)号：US20240214256A1

公开(公告)日：2024-06-27

申请号：US18557037

申请日：2021-06-16

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Kexin XIAO ,  Changlong XU ,  Wei LIU ,  Hao XU ,  Thomas Joseph RICHARDSON ,  Ori SHENTAL

IPC: H04L27/36 ,  H04L1/00 ,  H04L27/34

CPC classification number: H04L27/362 ,  H04L1/0058 ,  H04L27/3411

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may perform distribution matching on at least a first subset of a set of bits, such as the bits of transport block. The distribution matching may include a variable-to-fixed (v2f) distribution matching procedure in which a ratio between a quantity of input bits to output interim symbols for the v2f distribution matching procedure is variable. The distribution matching include evaluating, after each instance of the v2f distribution matching procedure, whether additional bits remain for distribution matching, and if so, whether to perform an additional instance of the v2f distribution matching procedure or an alternative distribution matching procedure on the remaining bits. Corresponding techniques for a receiving device are also described, including distribution dematching techniques based on a v2f distribution dematching procedure.

公开(公告)号：US20240137261A1

公开(公告)日：2024-04-25

申请号：US18547682

申请日：2021-04-22

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Thomas Joseph RICHARDSON ,  Kexin XIAO ,  Changlong XU ,  Ori SHENTAL ,  Hao XU

IPC: H04L27/34 ,  H04L5/00

CPC classification number: H04L27/34 ,  H04L5/0053 ,  H04L5/0091

Abstract: Methods, systems, and devices for wireless communications are described in which a receiving device, such as a base station or user equipment (UE), may receive an input signal that is modulated according to a probabilistic amplitude shaping (PAS) modulation technique. The receiving device may determine an associated channel noise estimate and may scale the input signal and the channel noise estimate based on a probability distribution parameter that is associated with the PAS modulation. The receiving device may demap the modulation constellation of the input signal based on the scaled input signal and the scaled channel noise estimate and provide one or more bits associated with the PAS modulated constellation. The probability distribution parameter may be estimated at the receiving device, or the transmitting device may provide the probability distribution parameter to the receiving device.

公开(公告)号：US20240097817A1

公开(公告)日：2024-03-21

申请号：US18261982

申请日：2021-03-18

Applicant: QUALCOMM INCORPORATED

Inventor： Wei LIU ,  Thomas Joseph RICHARDSON ,  Liangming WU ,  Changlong XU ,  Ori SHENTAL ,  Hao XU

IPC: H04L1/00 ,  H03M13/00 ,  H03M13/11

CPC classification number: H04L1/0041 ,  H03M13/1148 ,  H03M13/6362 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0068

Abstract: Methods, systems, and devices for wireless communication are described to support replacing values of one or more information bit vectors with one or more corresponding sets of parity bits. A first wireless device may replace an information bit vector with a parity bit vector, using a set of information bits of the information bit vector and based on a parity check matrix, which may result in generating the set of information bits at an information bit vector corresponding to a parity bit column of the parity check matrix, during encoding. The first wireless device may perform a transmission to a second wireless device, which may receive the transmission, decode the set of information bits to the information bit vector corresponding to the parity bit column. The second wireless device may replace other bit estimates of a vector corresponding to an information bit column with the set of information bits.

公开(公告)号：US20240380436A1

公开(公告)日：2024-11-14

申请号：US18313765

申请日：2023-05-08

Applicant: QUALCOMM Incorporated

Inventor： Ahmed BEDEWY ,  Juergen CEZANNE ,  Meilong JIANG ,  Ashwin SAMPATH ,  Junyi LI ,  Ozge KOYMEN ,  Ori SHENTAL

IPC: H04B7/04 ,  H04B7/10

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a reconfigurable intelligent surface (RIS) may select a weight vector, from a plurality of stored weight vectors, for enabling a spatially multiplexed communication, between a transmitter and a receiver, that includes two or more layers for each polarization of a plurality of polarizations for the spatially multiplexed communication. The RIS may receive the spatially multiplexed communication from the transmitter. The RIS may transmit the spatially multiplexed communication to the receiver in accordance with the weight vector. Numerous other aspects are described.

公开(公告)号：US20240364437A1

公开(公告)日：2024-10-31

申请号：US18584572

申请日：2024-02-22

Applicant: QUALCOMM Incorporated

Inventor： Thomas Markus HEHN ,  Tribhuvanesh OREKONDY ,  Arash BEHBOODI ,  Ori SHENTAL ,  Taesang YOO ,  June NAMGOONG ,  Akash Sandeep DOSHI ,  Ashwin SAMPATH ,  Juan Carlos BUCHELI GARCIA ,  Joseph Binamira SORIAGA

IPC: H04B17/309 ,  H04B17/391

CPC classification number: H04B17/347 ,  H04B17/3913

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may obtain position information associated with a first subset of network node positions, of a set of network node positions, in connection with a map associated with a wireless coverage area. The network node may obtain map information associated with the map and may determine, based on a machine learning component, a first plurality of predicted pathloss values associated with a second subset of network node positions of the set of network node positions. Numerous other aspects are described.

公开(公告)号：US20240250773A1

公开(公告)日：2024-07-25

申请号：US18684216

申请日：2022-03-02

Applicant: QUALCOMM Incorporated

Inventor： Wei LIU ,  Thomas Joseph RICHARDSON ,  Liangming WU ,  Changlong XU ,  Ori SHENTAL ,  Hao XU

IPC: H04L1/00 ,  H03M7/40

CPC classification number: H04L1/0033 ,  H03M7/40

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitting node may determine a set of geometry-specific parameters based at least in part on a symbol sequence length n and a target distribution. The transmitting node may determine a sequence of K bits based at least in part on a plurality of information bits and a bit sequence length K. The transmitting node may map, based at least in part on a composition selected from a plurality of compositions, the sequence of K bits to a sequence of n symbols using arithmetic coding based at least in part on the set of geometry-specific parameters. The transmitting node may transmit the sequence of n symbols to a receiving node. Numerous other aspects are described.

公开(公告)号：US20240137253A1

公开(公告)日：2024-04-25

申请号：US18546705

申请日：2021-04-27

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Kexin XIAO ,  Thomas Joseph RICHARDSON ,  Changlong XU ,  Ori SHENTAL ,  Kangqi LIU ,  Wei LIU ,  Hao XU

IPC: H04L27/00 ,  H03M7/40

CPC classification number: H04L27/0012 ,  H03M7/4006

Abstract: Wireless communications systems and methods related to an efficient arithmetic coding based multiple composition distribution matcher (MCDM) are provided. A wireless communication device selects, based on a first value representing a sequence of bits, a first composition from a plurality of compositions. Each composition of the plurality of compositions includes a different modulation symbol distribution associated with a modulation scheme. The wireless communication device encodes, based on the first composition, the sequence of bits into a sequence of symbols using arithmetic coding. The wireless communication device transmits a communication signal including the sequence of symbols.

公开(公告)号：US20230299828A1

公开(公告)日：2023-09-21

申请号：US17655319

申请日：2022-03-17

Applicant: QUALCOMM Incorporated

Inventor： Ori SHENTAL ,  Ashwin SAMPATH ,  Junyi LI ,  Thomas Joseph RICHARDSON

IPC: H04B7/06 ,  H04B7/0456

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04B7/0639

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first node may transmit a set of first values indicating a first estimated value at the first node and a first reliability value associated with the first estimated value, the set of first values being based at least in part on channel state information (CSI) associated with the first node and a set of user equipments (UEs). The first node may receive, from a set of second nodes, a set of second values indicating a second estimated value at the second node and a second reliability value associated with the second estimated value. The first node may transmit, to the set of second nodes, a set of third values indicating a third estimated value at the first node and a third reliability value associated with the third estimated value. Numerous other aspects are described.

公开(公告)号：US20240267274A1

公开(公告)日：2024-08-08

申请号：US18640394

申请日：2024-04-19

Applicant: QUALCOMM Incorporated

Inventor： Ori SHENTAL ,  Meilong JIANG ,  Ashwin SAMPATH ,  Ahmed BEDEWY

IPC: H04L27/26 ,  H03M13/00 ,  H03M13/15

CPC classification number: H04L27/2628 ,  H03M13/156 ,  H03M13/611

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may encode real samples of data to obtain encoded data based at least in part on adding one or more time domain complex samples to the real samples of the data, wherein a function of the one or more time domain complex samples is a known value, and wherein the function is a sum of exponentials of the one or more time domain complex samples. The first wireless communication device may transmit, to a second wireless communication device, the encoded data. Numerous other aspects are described.