无线协作网络中的DSTC分层协议
DSTC Layering Protocols in Wireless Cooperative Networks
摘要：
在具有单源-目的节点对和一些中继的无线电网络中，任意两个节点之间的链路被认为具有相同或零路径损耗。然而，在实践中，一些链路可能具有比其他链路高得多的路径损耗，但仍然是有用的。在本报告中，我们也考虑了从这些链路接收到的信号。\indent我们的系统模型包括一个源-目的地对两层的中继，其中源和第二层之间的较弱的链接，第一层和目的地之间也被认为是。我们提出了一些协议在这个系统模型中，运行最佳功率分配下的模拟，并比较这些协议。我们表明，在合理的信道强度，这些较弱的链路，建议的协议执行（$ \approx 2$ dB）优于现有的基本协议。正如预期的那样，改善的程度随着较弱链接的强度而增加。我们还表明，在中继接收信道的知识，可靠性和数据率提高。
英文摘要：
In a radio network with single source-destination pair and some relays, a link between any two nodes is considered to have same or zero path loss. However in practice some links may have considerably high path loss than others but still being useful. In this report, we take into account signals received from these links also. \indent Our system model consists of a source-destination pair with two layers of relays in which weaker links between source and second layer and between the first layer and destination are also considered. We propose some protocols in this system model, run simulations under optimum power allocation, and compare these protocols. We show that under reasonable channel strength of these weaker links, the proposed protocols perform ($ \approx 2$ dB) better than the existing basic protocol. As expected, the degree of improvement increases with the strength of the weaker links. We also show that with the receive channel knowledge in relays, the reliability and data rate are improved.
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