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Space-time diversity enhancements using collaborative communications

机译：使用协作通信增强时空多样性

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摘要

The use of the spatial dimension is known to greatly increase the reliability of quasi-static (i.e., nonergodic) wireless channels. In this paper, it is demonstrated that most of this gain can also be achieved through collaborative communications with single-antenna/multiple-antenna nodes when there is one receiving agent. In particular, for the single-antenna case, communication is considered to take place between clusters of nearby nodes. The existence of collaborative codes for which the intra-cluster negotiation penalty is, in principle, small (and almost all the diversity gain of traditional space-time codes may be realized) is shown. For example, for a single transmitter node with two collaborators and one receiver node, if the collaborators have as little as a 10-dB path loss advantage over the receiver, the penalty for collaboration over traditional space-time systems is negligible.
机译：众所周知，使用空间尺寸可以大大提高准静态（即非遍历）无线信道的可靠性。在本文中，证明了在有一个接收代理的情况下，也可以通过与单天线/多天线节点的协作通信来实现大部分增益。特别地，对于单天线情况，认为通信发生在附近节点的集群之间。从原理上讲，集群内协商代价很小的协作代码的存在（并且几乎可以实现传统时空代码的所有分集增益）。例如，对于具有两个协作者和一个接收者节点的单个发射器节点，如果协作者相对于接收器具有10 dB的路径损耗优势，那么与传统时空系统进行协作的代价就可以忽略不计。

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