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首页> 外文期刊>Information Theory, IEEE Transactions on >Cyclic Distributed Space–Time Codes for Wireless Relay Networks With No Channel Information
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Cyclic Distributed Space–Time Codes for Wireless Relay Networks With No Channel Information

机译：没有信道信息的无线中继网络的循环分布式时空码

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摘要

In this paper, we present a coding strategy for half duplex wireless relay networks, where we assume no channel knowledge at any of the transmitter, receiver, or relays. The coding scheme uses distributed space-time coding, that is, the relay nodes cooperate to encode the transmitted signal so that the receiver senses a space-time codeword. It is inspired by noncoherent differential techniques. The proposed strategy is available for any number of relays nodes. It is analyzed, and shown to yield a diversity linear in the number of relays. We also study the resistance of the scheme to relay node failures, and show that a network with R relay nodes and d of them down behaves, as far as diversity is concerned, as a network with R-d nodes. Finally, our construction can be easily generalized to the case where the transmitter and receiver nodes have several antennas.
机译：在本文中，我们提出了一种半双工无线中继网络的编码策略，其中我们假设在发射机，接收机或中继器中没有任何信道知识。编码方案使用分布式时空编码，即，中继节点协作以对传输的信号进行编码，以便接收器感测到时空码字。它受到非相干差分技术的启发。所提出的策略可用于任意数量的中继节点。经过分析，显示出中继数量呈线性线性变化。我们还研究了该方案对中继节点故障的抵抗力，并表明，就多样性而言，具有R个中继节点且其中d个节点向下的网络的行为与具有R-d个节点的网络一样。最后，我们的构造可以很容易地推广到发射机和接收机节点具有多个天线的情况。

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