知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

320 records (took 0.036 seconds)

    Methods and apparatus for generating demodulation candidates using vector candidate sampling (VCS)
    111.
    发明授权
    Methods and apparatus for generating demodulation candidates using vector candidate sampling (VCS) 有权
    使用向量候选采样（VCS）生成解调候选的方法和装置

    公开(公告)号：US09025704B2

    公开(公告)日：2015-05-05

    申请号：US13782216

    申请日：2013-03-01

    Applicant: QUALCOMM Incorporated

    Inventor： James E. Beckman ,  Alexei Yurievitch Gorokhov

    IPC: H04L27/06 ,  H04L25/02 ,  H04L25/03 ,  H04B7/04

    CPC classification number: H04L25/02 ,  H04B7/0413 ,  H04L25/03178 ,  H04L25/03305 ,  H04L25/03318

    Abstract: Certain aspects of the present disclosure relate to techniques for generating likely demodulation candidates using Vector Candidate Sampling (VCS). VCS is used to generate high likelihood candidates for Multiple Input Multiple Output (MIMO) demodulation that approaches optimal maximum a posteriori (MAP) performance with reasonable complexity. A receive data vector is recorded corresponding to a signal received at a MIMO receiver. A plurality of likely candidates are determined for MIMO demodulation via VCS, based at least on the receive data vector. Determining the likely candidates may include perturbing the receive data vector for each candidate based on a pre-determined perturb vector, and estimating a corresponding transmit data vector based at least on the perturbed receive data vector for the candidate and an estimator matrix, wherein the likely candidate comprises the estimated data vector.

    Abstract translation: 本公开的某些方面涉及使用矢量候选采样（VCS）来生成可能的解调候选的技术。 VCS用于生成具有合理复杂度的接近最佳后验（MAP）性能的多输入多输出（MIMO）解调的高似然候选。 对应于在MIMO接收机处接收的信号记录接收数据矢量。 至少基于接收数据向量，通过VCS确定多个可能的候选者进行MIMO解调。 确定可能的候选者可以包括基于预定的扰动向量扰乱每个候选的接收数据向量，以及至少基于用于候选的扰动接收数据向量和估计矩阵来估计相应的发射数据向量，其中可能的 候选者包括估计的数据向量。

    METHOD AND APPARATUS FOR CHANNEL FEEDBACK BASED ON REFERENCE SIGNAL
    113.
    发明申请
    METHOD AND APPARATUS FOR CHANNEL FEEDBACK BASED ON REFERENCE SIGNAL 有权
    基于参考信号的通道反馈的方法和装置

    公开(公告)号：US20140086092A1

    公开(公告)日：2014-03-27

    申请号：US14094548

    申请日：2013-12-02

    Applicant: QUALCOMM Incorporated

    Inventor： Wanshi Chen ,  Kapil Bhattad ,  Peter Gaal ,  Alexei Yurievitch Gorokhov ,  Juan Montojo

    IPC: H04W24/08

    CPC classification number: H04W24/08 ,  H04L1/0026 ,  H04L1/0028 ,  H04L5/0041 ,  H04L5/0048

    Abstract: Techniques for supporting channel measurement and reporting in a wireless communication system are described. In one design, a cell transmits a cell-specific reference signal (CRS) used for channel estimation and coherent demodulation and a channel spatial information reference signal (CSI-RS) used for channel measurement and channel feedback reporting. The cell may transmit the CSI-RS less frequently than the CRS, or from more antenna ports than the CRS, or on fewer resource elements than the CRS, or a combination thereof. In one design, a user equipment (UE) determines at least one bandwidth part configured for the UE, with each bandwidth part covering at least one subband. The UE receives the CRS and CSI-RS from the cell, determines channel feedback information for the at least one bandwidth part based on the CSI-RS, sends the channel feedback information to the cell, and receives data transmitted by the cell based on the channel feedback information.

    Abstract translation: 描述了在无线通信系统中支持信道测量和报告的技术。 在一种设计中，小区发送用于信道估计和相干解调的小区特定参考信号（CRS）以及用于信道测量和信道反馈报告的信道空间信息参考信号（CSI-RS）。 小区可以比CRS更频繁地发送CSI-RS，或者比比CRS更多的天线端口或比CRS更少的资源元素或其组合来发送CSI-RS。 在一种设计中，用户设备（UE）确定为UE配置的至少一个带宽部分，每个带宽部分覆盖至少一个子带。 UE从小区接收CRS和CSI-RS，基于CSI-RS确定至少一个带宽部分的信道反馈信息，向小区发送信道反馈信息，并接收基于小区的小区发送的数据 渠道反馈信息。

    DYNAMIC POWER AMPLIFIER BACKOFF USING HEADROOM INFORMATION
    116.
    发明申请
    DYNAMIC POWER AMPLIFIER BACKOFF USING HEADROOM INFORMATION 有权
    动态功率放大器使用HEADROOM信息

    公开(公告)号：US20130142154A1

    公开(公告)日：2013-06-06

    申请号：US13755285

    申请日：2013-01-31

    Applicant: QUALCOMM Incorporated

    Inventor： Alexei Yurievitch Gorokhov ,  Jaber Mohammad Borran ,  Avneesh Agrawal ,  Naga Bhushan ,  Tamer Adel Kadous ,  Ayman Fawzy Naguib

    IPC: H04W52/30

    CPC classification number: H04W52/30 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0058 ,  H04W52/04 ,  H04W72/06 ,  Y02B30/50

    Abstract: Systems and methodologies are described that facilitate mitigating effect of non-linear distortion from a power amplifier on a spectral mask margin. Power limit indications can be analyzed in scheduling mobile devices. Mobile devices with power limits can be scheduled on inner subbands. The power limits can be based at least in part on power amplifier headroom information. Other mobile devices can employ remaining portions of an allocated spectrum. Further, mobile devices can evaluate and establish a power amplifier backoff based upon the subband scheduling.

    Abstract translation: 描述了有助于减轻来自功率放大器的非线性失真对光谱掩模余量的影响的系统和方法。 功率限制指示可以在调度移动设备中进行分析。 具有功率限制的移动设备可以在内部子带上进行调度。 功率限制可以至少部分地基于功率放大器余量信息。 其他移动设备可以使用所分配频谱的剩余部分。 此外，移动设备可以基于子带调度来评估和建立功率放大器的退避。

    PRIORITY BASED MAPPING OF ENCODED BITS TO SYMBOLS
    117.
    发明申请
    PRIORITY BASED MAPPING OF ENCODED BITS TO SYMBOLS 有权

    公开(公告)号：US20250080271A1

    公开(公告)日：2025-03-06

    申请号：US18953968

    申请日：2024-11-20

    Applicant: QUALCOMM Incorporated

    Inventor： Hobin KIM ,  Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Michael Lee MCCLOUD ,  Joseph Binamira Soriaga

    IPC: H04L1/00 ,  H03M13/11 ,  H04W28/04

    Abstract: A new radio (NR) bit prioritization procedure that may be executed by a UE and a base station is disclosed, resulting in transmission and reception of modulation symbols having prioritized bits. For example, a transmitter may encode a code block using low-density parity-check code to generate a stream of encoded bits. The transmitter may arrange the encoded bits in one or more modulation symbols according to a relative priority of the encoded bits. The highest priority bits may be located in the most significant bits of the modulation symbol, and therefore be less likely to experience errors. A receiver may receive the modulation symbols and reorder the encoded bits according to the coding scheme based on the relative priority prior to decoding the encoded bits. The prioritization of the bits within the modulation symbols may provide improved block error rates over sequential mapping of encoded bits to symbols.

    Resource selection for random access
    120.
    发明授权
    Resource selection for random access 有权

    公开(公告)号：US12114360B2

    公开(公告)日：2024-10-08

    申请号：US16818796

    申请日：2020-03-13

    Applicant: QUALCOMM Incorporated

    Inventor： Junsheng Han ,  Muhammad Nazmul Islam ,  Raghu Narayan Challa ,  Mihir Vijay Laghate ,  Amir Aminzadeh Gohari ,  Alexei Yurievitch Gorokhov

    IPC: H04W74/0833 ,  H04W56/00

    CPC classification number: H04W74/0833 ,  H04W56/001

    Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for selecting a PRACH occasion (RO) based on downlink quality, access congestion, latency (e.g., time to next available RO), beam correspondence, random access in previous transmissions, or combinations of these factors. The user equipment (UE) may detect access congestion of synchronization signal blocks (SSBs) and select the less congested SSB in the RO selection. The UE may detect the access congestion by receiving a back-off indicator from the base station, detecting a contention resolution failure, or the number or media access control (MAC) subheaders in a random access response. In some cases, the ROs associated with different SSBs have different latencies and the UE may select the earliest available RO.

Patent Agency Ranking