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    • 7. 发明授权
    • Combining decision metrics for decoding based on payload difference
    • 基于有效载荷差异组合用于解码的决策度量
    • US08467480B2
    • 2013-06-18
    • US12878906
    • 2010-09-09
    • Ke LiuKibeom SeongTao LuoYongbin Wei
    • Ke LiuKibeom SeongTao LuoYongbin Wei
    • H03D1/00H04L27/06
    • H04L1/0045H04L1/08
    • Decision metrics used to decode wireless communication payloads are combined for successive frames to improve decoding of the later received frames. A bitwise payload difference between successive frames is encoded in the same manner the payloads are encoded. Decision metrics determined for the earlier received frame are combined with the encoded payload difference to generate adjusted decision metrics. The adjusted decision metrics are combined with decision metrics determined for the later received frame. The combined decision metrics are decoded to generate a payload for the later received frame. If the decoding is not successful the combined decision metrics are carried forward and the process is repeated based on the payload difference between the following frames.
    • 用于解码无线通信有效载荷的决策度量被组合用于连续的帧,以改进后续接收的帧的解码。 连续帧之间的按位有效负载差异以有效载荷编码的相同方式进行编码。 将针对较早接收到的帧确定的决策度量与经编码的有效载荷差值相组合以产生经调整的决策度量。 经调整的决策度量与为稍后接收的帧确定的决策度量相结合。 对组合决策度量进行解码,以生成稍后接收的帧的有效载荷。 如果解码不成功,则组合决策度量被转发,并且基于以下帧之间的有效负载差重复该过程。
    • 10. 发明授权
    • Selection of acquisition sequences for optimal frequency offset estimation
    • 选择最佳频偏估计的采集序列
    • US08223908B2
    • 2012-07-17
    • US12113409
    • 2008-05-01
    • Peter GaalByoung-Hoon KimKe LiuTao Luo
    • Peter GaalByoung-Hoon KimKe LiuTao Luo
    • H04L7/00
    • H04L27/261H04L25/0226
    • Systems and methods are provided to generate a set of synchronization channel sequences that optimize time and frequency acquisition. A set of root indices of Zadoff-Chu sequences in a first domain (e.g., time domain) that optimize a performance metric or merit factor are identified. An optimal index is determined that also optimizes a performance metric in a reciprocal domain (e.g., frequency domain). Optimal indices satisfy a centro-symmetric relationship with respect to a half-value of sequence length: When 1 is an optimal index, N−1 is also an optimal root index. For sequences of length Q2=N, a base sequence generated with an optimal sequence can be utilized to generate at least two disparate optimal sequences through sign-flip, conjugation, and periodic modulation operations.
    • 提供系统和方法以产生优化时间和频率采集的一组同步信道序列。 识别优化性能度量或优点因子的第一域(例如,时域)中的Zadoff-Chu序列的一组根索引。 确定最优索引,该最优索引还优化互倒域(例如,频域)中的性能度量。 最优索引相对于序列长度的半值满足中心对称关系:当1是最优索引时,N-1也是最优根索引。 对于长度为Q2 = N的序列,可利用以最佳序列生成的碱基序列通过符号翻转,共轭和周期调制操作来生成至少两个不同的最佳序列。