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首页> 外文会议>IEEE international conference on computer science and information technology;ICCSIT 2010 >Outage Minimization With Optimal Power Allocation Based On Cooperative Relaying and Partner Selection
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Outage Minimization With Optimal Power Allocation Based On Cooperative Relaying and Partner Selection

机译：基于合作中继和合作伙伴选择的最优功率分配，最大限度地减少停机

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摘要

Cooperative communication has characteristics of spatial diversity and virtual antenna, thus it can improve communication efficiency significantly in cellular or wireless data networks. One of the essential design issues in cooperative communication is partner selection mechanism. The problem of selecting suitable partners for a cooperative strategy is more complex when prospective partners have links of dissimilar quality to a centra] destination, leading to the possibility of non-reciprocal cooperation. In this paper, we consider a coded cooperative system under Rayleigh fading and path loss. We present a novel algorithm for partner selection and optimal power allocation in the Decode-and-Fonvard (DF) cooperative diversity that minimizes the outage probability given required total transmission power constraint. We evaluate the proposed algorithm by conducting simulations. Simulation results show that the selection strategy can increase duration of cooperation, as well as decrease the probability of unsuccessful partner selection. The results demonstrate that the outcomes of the proposed algorithm are very close to results of full search for optimal set.
机译：协作通信具有空间分集和虚拟天线的特点，因此可以大大提高蜂窝或无线数据网络中的通信效率。合作交流中的基本设计问题之一是合作伙伴选择机制。当潜在合作伙伴的质量与中心目的地的链接不同时，为合作策略选择合适的合作伙伴的问题就更加复杂，从而导致了不可逆的合作。在本文中，我们考虑了瑞利衰落和路径损耗下的编码协作系统。我们提出了一种新的合作伙伴选择算法，用于在解码和Fonvard（DF）协作分集中优化功率分配，该算法在给定所需的总传输功率约束的情况下最大程度地降低了断电概率。我们通过进行仿真评估提出的算法。仿真结果表明，选择策略可以增加合作的持续时间，并减少合作伙伴选择失败的可能性。结果表明，所提出算法的结果非常接近于全搜索最优集的结果。

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