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Full Rate and Full Diversity STBC in Decode-and-Forward Relay Systems

机译：解码和前进中继系统中的全速率和全部多样性STBC

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摘要

Diversity techniques are very effective tools to increase signal reception quality in Rayleigh fading channels. A novel space-time block coding method for cooperative relay networks is proposed which guarantees full diversity for any number of mobile relays with minimal delay, provided that few bits of feedback from the destination to the source and the relays are available. As in the case of orthogonal space-time block codes, all transmitted symbols are separately decoded both in the relays and the destination. Therefore, decoding complexity is linear. In our proposed scheme, larger number of codes can be generated for improved coding gain. The performance of the proposed scheme is investigated for cooperative communication. It is shown that the new approach provides SNR improvement, and it is more resilient to feedback errors compared to the antenna selection technique on the basis of same number of feedback bits.
机译：多样性技术是非常有效的工具，以提高瑞利衰落通道中的信号接收质量。提出了一种用于协作中继网络的新的空间时间块编码方法，其保证了具有最小延迟的任何数量的移动继电器的全部分集，只要从目的地和继电器获得的目的地的反馈很少。如在正交空间块代码的情况下，所有发送的符号都在继电器和目的地中单独解码。因此，解码复杂性是线性的。在我们提出的方案中，可以生成更多的代码以改进的编码增益。调查拟议计划的履行以进行合作沟通。结果表明，新方法提供了SNR改进，并且与基于相同数量的反馈位相比，与天线选择技术相比，对反馈误差更具弹性。

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