Cooperative diversity performance of selection relaying over correlated shadowing
Cooperative diversity performance of selection relaying over correlated shadowing
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DOI：
10.1016/j.phycom.2011.02.001
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发表时间：
2011-09
期刊：
影响因子：
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通讯作者：
V. Sakarellos;D. Skraparlis;A. Panagopoulos;J. Kanellopoulos
中科院分区：
文献类型：
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作者：
V. Sakarellos;D. Skraparlis;A. Panagopoulos;J. Kanellopoulos
中继系统的研究重新引起了人们对遭受衰落的通信信道的协作分集的兴趣。特别是，在接收器处对中继路径和直接路径进行分集组合的双跳中继具有实际重要性，并且可以被视为形成更大通信系统的构建块。本文提出了针对接收器处的 SC 和 MRC 技术使用相关对数正态信道上的选择中继的协作分集性能的新颖分析表达式和数值结果。此外，还提出了一个用于比较媒体访问协议和中继能力（TDMA/半双工、SDMA/全双工）的性能和效率的精确框架。最后，基于对中断概率的分析和新颖的数学表达式，我们研究了对数正态参数（包括相关性）对协作系统性能及其效率的影响。
The study of relaying systems has found renewed interest in the context of cooperative diversity for communication channels suffering from fading. In particular, dual-hop relaying with diversity combining of the relayed and direct path at the receiver has practical importance and can be considered as a building block for forming larger communication systems. This paper presents novel analytical expressions and numerical results on cooperative diversity performance using selection relaying over correlated lognormal channels for both SC and MRC techniques at the receiver. In addition, an exact framework for comparing the performance and efficiency of the medium access protocol and relay capabilities (TDMA/half-duplex, SDMA/full-duplex) is proposed. Finally, based on the analysis and novel mathematical expressions for the outage probability, we investigate the impact of the lognormal parameters (including correlation) on the cooperative system performance and its efficiency.