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1. 发明申请

US20100254300A1 LEVERAGING COHERENT DISTRIBUTED SPACE-TIME CODES FOR NONCOHERENT COMMUNICATION IN RELAY NETWORKS VIA TRAINING 有权
标题翻译：在继电器网络中通过培训利用相关的分布式空间时间码
公开(公告)号：US20100254300A1
公开(公告)日：2010-10-07
申请号：US12419430
申请日：2009-04-07
申请人： Susinder Rajan GULASEKARAN , Balaji SUNDAR RAJAN
发明人： Susinder Rajan GULASEKARAN , Balaji SUNDAR RAJAN
IPC分类号： H04B7/14
CPC分类号： H04B7/155 , H04B7/2606
摘要： In a training cycle, a source node transmits at least one pilot symbol to relay nodes in a training cycle. The relay nodes each amplifies and forwards the pilot symbol to a destination node in an assigned time slot in the training cycle. The destination node sequentially receives multiple versions of the pilot symbol from the relay nodes and estimates channel information based on the multiple versions of the pilot symbol. In data transmission cycles that follow the training cycle, the nodes apply coherent distributed space-time block code (DSTBC) with the estimated channel information to communicate data symbols. The power allocation between training and data cycles may be adjusted to improve the error performance. The nodes may also apply orthogonal frequency division multiplexing (OFDM) based DSTBC when timing errors are not known.
摘要翻译：在训练周期中，源节点在训练周期中向中继节点发送至少一个导频符号。中继节点每个在训练周期中的指定时隙中放大并转发导频符号到目标节点。目的地节点从中继节点顺序地接收导频符号的多个版本，并基于导频符号的多个版本来估计信道信息。在训练周期之后的数据传输周期中，节点将相干分布空时块码（DSTBC）与所估计的信道信息一起应用以传送数据符号。可以调整训练和数据循环之间的功率分配，以改善误差性能。当定时误差未知时，节点还可以应用基于正交频分复用（OFDM）的DSTBC。

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