Reduced state sequence estimation with soft decision outputs
    91.
    发明授权
    Reduced state sequence estimation with soft decision outputs 有权
    通过软判决输出降低状态序列估计

    公开(公告)号:US08666000B2

    公开(公告)日:2014-03-04

    申请号:US13922329

    申请日:2013-06-20

    申请人: MagnaCom Ltd.

    IPC分类号: H03D1/00 H04L27/06

    摘要: A receiver may be operable to receive an inter-symbol correlated (ISC) signal, and generate a plurality of soft decisions as to information carried in the ISC signal. The soft decisions may be generated using a reduced-state sequence estimation (RSSE) process. The RSSE process may be such that the number of symbol survivors retained after each iteration of the RSSE process is less than the maximum likelihood state space. The plurality of soft decisions may comprise a plurality of log likelihood ratios (LLRs). Each of the plurality of LLRs may correspond to a respective one of a plurality of subwords of a forward error correction (FEC) codeword.

    摘要翻译: 接收机可以用于接收符号间相关(ISC)信号,并且生成关于在ISC信号中携带的信息的多个软判决。 可以使用缩减状态序列估计(RSSE)过程来产生软判决。 RSSE过程可以使得在RSSE过程的每次迭代之后保留的符号幸存者的数量小于最大似然状态空间。 多个软判决可以包括多个对数似然比(LLR)。 多个LLR中的每一个可以对应于前向纠错(FEC)码字的多个子词中的相应一个。

    HIGHLY-SPECTRALLY-EFFICIENT RECEPTION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING
    97.
    发明申请
    HIGHLY-SPECTRALLY-EFFICIENT RECEPTION USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 有权
    使用正交频分多路复用的高分辨率接收

    公开(公告)号:US20130343446A1

    公开(公告)日:2013-12-26

    申请号:US13921710

    申请日:2013-06-19

    申请人: MagnaCom Ltd.

    IPC分类号: H04L25/03

    摘要: Circuitry for use in a receiver may comprise: a front-end circuit operable to receive an orthogonal frequency division multiplexing (OFDM) symbol on a first number of physical subcarriers. The circuitry may comprise a decoding circuit operable to decode the OFDM symbol using an inter-carrier interference (ICI) model, the decoding resulting in a determination of a sequence of symbols, comprising a second number of symbols, that most-likely correspond to the received OFDM symbol, where the second number is greater than the first number. The sequence of symbols may comprise N-QAM symbols, N being an integer. The ISCI model may be based, at least in part, on non-linearity experienced by the OFDM symbol during transmission by a transmitter, propagation over a channel, and/or reception by the receiver. The ISCI model may be based, at least in part, on phase-noise introduced to the OFDM symbol during transmission by a transmitter, propagation over a channel, and/or reception by the receiver.

    摘要翻译: 用于接收机的电路可以包括:前端电路,其可操作以在第一数量的物理子载波上接收正交频分复用(OFDM)符号。 电路可以包括解码电路,其可操作以使用载波间干扰(ICI)模型来解码OFDM符号,所述解码导致确定符号序列,其包括第二数量的符号,其最可能对应于 接收到的OFDM符号,其中第二个数字大于第一个数字。 符号序列可以包括N-QAM符号,N是整数。 至少部分地,ISCI模型可以基于由发射机传输期间由OFDM符号经历的非线性度,在信道上传播和/或由接收机接收。 至少部分地,ISCI模型可以基于由发射机传输期间引入到OFDM符号的相位噪声,在信道上传播和/或接收器的接收。