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    SYSTEM AND METHOD FOR USING LOW COMPLEXITY MAXIMUM LIKELIHOOD DECODER IN A MIMO DECODER
    21.
    发明公开
    SYSTEM AND METHOD FOR USING LOW COMPLEXITY MAXIMUM LIKELIHOOD DECODER IN A MIMO DECODER 审中-公开

    公开(公告)号：US20230269124A1

    公开(公告)日：2023-08-24

    申请号：US17679944

    申请日：2022-02-24

    Applicant: Ceva D.S.P. Ltd.

    Inventor： Tomer YABLONKA ,  Guy KESHET ,  Zeev KAPLAN

    IPC: H04L27/34 ,  H04L25/06 ,  H04L1/00

    CPC classification number: H04L27/3405 ,  H04L25/061 ,  H04L1/0054

    Abstract: A method and system for performing quadrature amplitude modulation (QAM) decoding of a received signal includes finding for each layer a region in a first constellation diagram of the received signal, the region including a portion of the first constellation diagram, the portion having the same size of a second constellation diagram, and a first constellation order of the received signal is higher than a second constellation order of the second constellation diagram; and, for each layer: finding a first portion of bits based on bits that are constant among constellation points located in the region of the layer; decoding the received signal using a QAM decoder having the second constellation order to obtain a second portion of bits; adjusting the second portion of bits based on the region of the layer; and merging the first portion of bits with the second portion of bits to obtain a decoded symbol.

    Signal processing device and transmission device
    22.
    发明授权
    Signal processing device and transmission device 有权

    公开(公告)号：US11711247B2

    公开(公告)日：2023-07-25

    申请号：US17828082

    申请日：2022-05-31

    Applicant: FUJITSU LIMITED

    Inventor： Yohei Koganei

    IPC: H04L27/06 ,  H04L25/06

    CPC classification number: H04L25/067

    Abstract: A signal processing device includes: a memory; and a processor coupled to the memory and configured to: perform soft decision of a value of, among bit strings, a predetermined bit string encoded with a soft decision code from a symbol assigned to, according to each value of the bit strings, the bit strings having been subject to encoding of an outer code with a turbo product code and encoding of an inner code with the soft decision code; decode the predetermined bit string with the soft decision code on a basis of a result of the soft decision; individually perform, from the symbol, the soft decision of a value of each bit string other than the predetermined bit string among the bit strings; and decode the bit strings with the turbo product code on a basis of a result of the decoding and a result of the soft decision.

    Receiver filtering
    23.
    发明授权
    Receiver filtering 有权

    公开(公告)号：US11705988B2

    公开(公告)日：2023-07-18

    申请号：US17644338

    申请日：2021-12-14

    Applicant: MAXLINEAR, INC.

    Inventor： YouZhe Fan

    IPC: H04L27/06 ,  H04L1/00 ,  H04L25/03 ,  H04L25/02 ,  H04L25/06

    CPC classification number: H04L1/0054 ,  H04L1/005 ,  H04L25/0204 ,  H04L25/03006 ,  H04L25/067

    Abstract: A receiver may include a first filter configured to generate a first estimation of a symbol of a received signal and a second filter configured to generate a second estimation of the symbol of the received signal. The receiver may also include a decoder configured to decode the symbol using one of the first estimation and the second estimation and a decision circuit configured to select one of the first estimation and the second estimation to provide to the decoder for decoding of the symbol based on a comparison of the first estimation to an estimation threshold.

    METHODS AND SYSTEMS FOR FILTER FREQUENCY RESPONSE SHIFT COMPENSATION FOR WLAN TRAFFIC
    24.
    发明公开
    METHODS AND SYSTEMS FOR FILTER FREQUENCY RESPONSE SHIFT COMPENSATION FOR WLAN TRAFFIC 审中-公开

    公开(公告)号：US20230179449A1

    公开(公告)日：2023-06-08

    申请号：US18166619

    申请日：2023-02-09

    Applicant: Hewlett Packard Enterprise Development LP

    Inventor： Nitin A. CHANGLANI ,  Farhan HASNAIN ,  Eldad PERAHIA ,  Deven PATEL

    IPC: H04L25/02 ,  H04L25/06 ,  H04L5/00

    CPC classification number: H04L25/0224 ,  H04L25/063 ,  H04L5/0007

    Abstract: Systems and techniques are described that are directed to filter frequency response shift compensation, including compensating for shifting in the rejection band of the filter. Compensation for the shifting in the rejection band can include applying a pre-distortion to attenuate edge resource units (RUs), and applying PHY Protocol Data Unit (PPDU) scheduling schemes. For example, a PPDU scheduling scheme reduce bandwidth in the channel, thereby dropping the out of band RUs. Front ends provide feedback to a respective radio, which allows that radio to apply the appropriate pre-distortion. The front ends can include one or more filters enabling frequency domain coexistence between collocated radios operating in the differing Wi-Fi bands, and a coupler that provides the feedback indicating the frequency response shift to a radio. The radio can then apply a digital pre-distortion to compensate for the shifting in the rejection band.

    DECODING METHOD, DECODER, AND DECODING APPARATUS
    29.
    发明申请
    DECODING METHOD, DECODER, AND DECODING APPARATUS 有权

    公开(公告)号：US20220329260A1

    公开(公告)日：2022-10-13

    申请号：US17852218

    申请日：2022-06-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Mo LI ,  Dori GIDRON ,  Michael ZARUBINSKY ,  Dudi LEVY

    IPC: H03M13/11 ,  H04L25/06

    Abstract: This application discloses example decoding methods, example decoder, and example decoding apparatuses. One example decodine method includes performing soft decision decoding on a first sub-codeword in a plurality of sub-codewords to obtain a hard decision result. It is determined whether to skip a decoding iteration. In response to determining not to skip the decoding iteration, a first turn-off identifier corresponding to the first sub-codeword is set to a first value based on the hard decision result. The first turn-off identifier indicates whether to perform soft decision decoding on the first sub-codeword in a next decoding iteration. The soft decision decoding is not performed on the first sub-codeword in the next decoding iteration when a value indicated by the first turn-off identifier is the first value. The hard decision result is stored.

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