文献 [ 5 ]在协作分集中将空时分组编码 ( Space - time Block Coding)和卷积编码结合,以同时获得分 集和编码增益。但是,上述研究并没有考虑对潜在 中继终端进行选择以优化性能的问题。
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本发明涉及发射分集、接收分集和空时分组编码领域。
The present invention relates to the fields of transmit diversity, receive diversity and space-time block codes.
文章首先建立了空时分组编码的系统模型,并且介绍了最大似然估计的理论。
This text establishes a model of space-time block code system at first, and also introduces the theory of maximum likelihood estimate.
传统的差分空时分组编码(DSTBC)在QPSK调制时存在着信号星座扩展。
The traditional differential space-time block code (DSTBC) suffers from the signal constellation expansion for QPSK modulation.
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