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    Forward Error Correction Decode Processing Power Reduction
    2.
    发明公开
    Forward Error Correction Decode Processing Power Reduction 审中-公开

    公开(公告)号：US20240235731A1

    公开(公告)日：2024-07-11

    申请号：US18095644

    申请日：2023-01-11

    Applicant: Calix, Inc.

    Inventor： Christopher Thomas Bernard ,  Scott Notch

    IPC: H04L1/00 ,  H04B10/27 ,  H04B10/564

    CPC classification number: H04L1/0044 ,  H04B10/27 ,  H04B10/564

    Abstract: Systems and techniques for forward error correction decode processing power reduction are described herein. A first codeword is identified in a network transmission. A conditional decoding window is generated that begins with the first codeword. The conditional decoding window is aligned with a frame of the network transmission. A report is generated that includes an indication of relevance of the conditional decoding window to a network device. The conditional decoding window and the report are transmitted to the network device. A conditional decoding window is received that includes a first codeword. The first codeword is decoded to determine a second codeword. A report is obtained that includes a codeword relevance bit for the second codeword. Upon a determination that the codeword relevance bit indicates that the second codeword is irrelevant, the second codeword is discarded without decoding the second codeword.

    RATE ADAPTIVE TURBO FORWARD ERROR CORRECTION
    8.
    发明申请
    RATE ADAPTIVE TURBO FORWARD ERROR CORRECTION 有权
    速率自适应涡轮前向纠错

    公开(公告)号：US20150326252A1

    公开(公告)日：2015-11-12

    申请号：US14704377

    申请日：2015-05-05

    Applicant: Cisco Technology, Inc.

    Inventor： Andreas Bisplinghoff

    IPC: H03M13/35 ,  H04L27/18 ,  H04L27/04 ,  H03M13/25

    CPC classification number: H04L1/007 ,  H03M13/23 ,  H03M13/256 ,  H03M13/258 ,  H03M13/353 ,  H04L1/0003 ,  H04L1/0016 ,  H04L1/0041 ,  H04L1/0044 ,  H04L1/005 ,  H04L1/0058 ,  H04L1/006 ,  H04L27/04 ,  H04L27/18 ,  H04L27/22 ,  H04L27/2332 ,  H04L27/362

    Abstract: Techniques herein support enhanced multi-rate encoding and decoding of signals in multiple formats. In one embodiment, input data is received at a first device at one of a plurality of data rates. Encoder units are activated to produce streams of encoded input data. The encoder units are configured to operate at the same data rate. Differential encoding operations are performed to produce an encoded output stream. The encoded output stream is modulated for transmission to a second device. In another embodiment, a first device receives an encoded data stream that is transmitted from a second device. The modulated data stream includes encoded data at one of a plurality of data rates. Differential decoding is performed on the encoded data by activating one or more of a plurality of decoder units, where each of the plurality of decoder units is configured to operate at the same rate.

    Abstract translation: 这里的技术支持多种格式的信号的增强的多速率编码和解码。 在一个实施例中，以多个数据速率中的一个以第一设备接收输入数据。 编码器单元被激活以产生编码输入数据流。 编码器单元配置为以相同的数据速率运行。 执行差分编码操作以产生编码的输出流。 编码的输出流被调制以传输到第二设备。 在另一实施例中，第一设备接收从第二设备发送的编码数据流。 调制数据流包括以多个数据速率之一的编码数据。 通过激活多个解码器单元中的一个或多个来对编码数据执行差分解码，其中多个解码器单元中的每一个被配置为以相同的速率操作。

    Method and apparatus for saving power by using signal field of preamble
    9.
    发明授权
    Method and apparatus for saving power by using signal field of preamble 有权
    通过使用前置码的信号场来节省功率的方法和装置

    公开(公告)号：US09094175B2

    公开(公告)日：2015-07-28

    申请号：US13182190

    申请日：2011-07-13

    Applicant: Santosh Paul Abraham ,  Hemanth Sampath ,  Sameer Vermani

    Inventor： Santosh Paul Abraham ,  Hemanth Sampath ,  Sameer Vermani

    IPC: H04L1/00

    CPC classification number: H04L1/0061 ,  H04L1/0044 ,  H04L2001/0093

    Abstract: Certain aspects of the present disclosure relate to a technique for power saving at mobile stations in Very High Throughput (VHT) systems using signal field bits of a preamble with a limited transmission overhead. The present disclosure proposes a method of indicating to a destination through a preamble cyclic redundancy check (CRC) checksum that the destination may be the intended destination of a transmission packet. The present disclosure also proposes a method of indicating to a destination through a preamble CRC that the destination may not be the intended destination of a transmission packet. In this case, decoding of the received packet can be terminated in order to save power at a receiving device.

    Abstract translation: 本公开的某些方面涉及使用具有有限传输开销的前导码的信号字段位在超高吞吐量（VHT）系统中的移动站节电的技术。 本公开提出了一种通过前导循环冗余校验（CRC）校验和向目的地指示目的地可以是传输分组的预期目的地的方法。 本公开还提出了一种通过前导码向目的地指示目的地可能不是传输分组的预期目的地的方法。 在这种情况下，可以终止对接收到的分组的解码，以便在接收设备处节省功率。

    Adaptive QAM transmission scheme to improve performance on an AWGN channel
    10.
    发明授权
    Adaptive QAM transmission scheme to improve performance on an AWGN channel 有权
    自适应QAM传输方案，以提高AWGN信道的性能

    公开(公告)号：US09036694B2

    公开(公告)日：2015-05-19

    申请号：US12737094

    申请日：2009-05-22

    Applicant: Wei Zhou ,  Li Zou

    Inventor： Wei Zhou ,  Li Zou

    IPC: H04N11/02 ,  G06F11/00 ,  H04L27/34 ,  H04L1/00 ,  H04L27/00 ,  H04L27/36

    CPC classification number: H04L27/3411 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0044 ,  H04L1/005 ,  H04L1/0057 ,  H04L27/0008 ,  H04L27/3416 ,  H04L27/366

    Abstract: A cable transmitter supports a number of low density parity check (LDPC) coding rates, e.g., ¼, ⅓, ⅖, ½, ⅗, ⅔, ¾, ⅘, ⅚, 8/9 and 9/10; and supports a number of quadrature amplitude modulation (QAM) schemes, e.g., 4-QAM, 16-QAM, 64-QAM, 256-QAM, 1024-QAM or higher. For a selected modulation scheme, the cable transmitter selects between using a non-uniform symbol constellation or a uniform symbol constellation as a function of a selected coding rate.

    Abstract translation: 电缆发射机支持多个低密度奇偶校验（LDPC）编码率，例如¼，1/3，⅖，½，⅗，⅔，¾，⅘，⅚，8/9和9/10; 并且支持多个正交幅度调制（QAM）方案，例如4-QAM，16-QAM，64-QAM，256-QAM，1024-QAM或更高。 对于所选择的调制方案，电缆发射机在使用非均匀符号星座或均匀符号星座之间选择作为所选编码速率的函数。

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