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    BALANCED CODING SCHEME
    1.
    发明公开
    BALANCED CODING SCHEME 审中-公开

    公开(公告)号：US20240106568A1

    公开(公告)日：2024-03-28

    申请号：US17932543

    申请日：2022-09-15

    Applicant: QUALCOMM Incorporated

    Inventor： Ram KRIPS ,  Gideon Shlomo KUTZ ,  Amit BAR-OR TILLINGER ,  Elad MEIR ,  David YUNUSOV ,  Assaf TOUBOUL

    IPC: H04L1/00 ,  H04L5/00

    CPC classification number: H04L1/006 ,  H04L1/0014 ,  H04L5/0051

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a configuration for balanced code communication, the configuration indicating parameters of signals of balanced code communications having sequences, within codewords, that balance. The UE may receive, from a network node, a balanced code communication, the receiving comprising decoding a codeword of the balanced code communication and estimating one or more parameters of communicating with the network node based at least in part on the configuration and based at least in part on using a balancing property of the balanced code communication. Numerous other aspects are described.

    PHASE NOISE ESTIMATION AND CANCELLATION
    4.
    发明申请
    PHASE NOISE ESTIMATION AND CANCELLATION 审中-公开

    公开(公告)号：US20170373910A1

    公开(公告)日：2017-12-28

    申请号：US15423108

    申请日：2017-02-02

    Applicant: HODA SHAHMOHAMMADIAN ,  AHIKAM AHARONY

    Inventor： HODA SHAHMOHAMMADIAN ,  AHIKAM AHARONY

    IPC: H04L27/26 ,  H04L5/00 ,  H04L27/34 ,  H04L1/00

    CPC classification number: H04L27/2688 ,  H04L1/006 ,  H04L5/0048 ,  H04L5/006 ,  H04L25/0226 ,  H04L27/34

    Abstract: Phase noise estimation and cancellation as disclosed herein may allow cost-efficient increase of capacity in communications by enabling very high QAM levels. The proposed solution is potentially applicable to any single carrier applications where phase noise is a limiting factor and a required order of modulation is very high. For example, disclosed embodiments may enable high QAM levels for microwave backhauls despite severe phase noise sensitivity. One embodiment involves a pilot-aided and BCJR-based sequential search algorithm that accurately estimates and subtracts fast-varying phase noise symbol-by-symbol. Residual BER performance is evaluated under the most challenging phase noise scenarios. FPGA emulation results show detection and removal of a significant amount of phase noise and zero BER performance even for complex 1K-QAM and above.

    WIRELESS RECEIVER
    6.
    发明申请
    WIRELESS RECEIVER 审中-公开

    公开(公告)号：US20170155474A1

    公开(公告)日：2017-06-01

    申请号：US15362364

    申请日：2016-11-28

    Applicant: Paul Dean Alexander

    Inventor： Paul Dean Alexander

    IPC: H04L1/00 ,  H04L25/02

    CPC classification number: H04L1/0054 ,  H03M13/1102 ,  H03M13/2957 ,  H03M13/41 ,  H03M13/4169 ,  H03M13/6337 ,  H03M13/6362 ,  H04L1/005 ,  H04L1/006 ,  H04L1/203 ,  H04L1/208 ,  H04L25/024 ,  H04L25/03203 ,  H04L25/03292 ,  H04L27/2649

    Abstract: The present invention relates to a method and apparatus for channel estimation between a transmitter and a receiver in a wireless communications system. In one arrangement, the method comprises: receiving at the receiver a first sequence of bits representing a first sequence of coded symbols transmitted over the communications channel; decoding the first sequence of coded symbols using maximum-likelihood based decoding including: generating traceback outcomes by tracing backwards the first sequence of bits through a maximum-likelihood based traceback path, the traceback outcomes including a first portion associated with a first traceback depth and a second portion associated with a second traceback depth that is deeper than the first traceback depth; generating a channel estimate of the communications channel based on the first portion of the traceback outcomes; and generating an estimate of at least some information bits coded in the first sequence of coded symbols based on the second portion of the traceback outcomes.

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