Cooperative decode-and-forward relaying with orthogonal space-time block code over doubly correlated Nakagami-m fading channels
Cooperative decode-and-forward relaying with orthogonal space-time block code over doubly correlated Nakagami-m fading channels
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DOI：
10.1049/iet-com.2012.0435
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发表时间：
2013-04
期刊：
影响因子：
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通讯作者：
Kai Yang;Jie Yang
中科院分区：
文献类型：
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作者：
Kai Yang;Jie Yang
在双相关Nakagami-m衰落信道下，研究了采用正交空时分组码的协作译码转发多输入多输出中继系统在源节点、中继节点和目的节点均配备多个天线的情况下的性能。它们还包括相关和独立的瑞利衰落信道作为特例。只有当中继节点能够正确地接收到来自源的信号时，它才会将源信息转发到目的地。对于最大比合并和选择合并两种接收器，给出了瞬时端到端信噪比的累积分布函数(CDF)和概率密度函数(SNR)的紧凑闭合表达式。此外，还推导了依赖于CDF的中断概率(OP)和误码率(SER)的精确解析表达式。此外，他们还给出了高信噪比条件下OP和SER的渐近表达式，由此可以深入了解系统性能，并推导出可实现的分集阶数和阵列增益。通过蒙特卡罗模拟对解析表达式进行了验证。
In this study, the authors investigate the performance of cooperative decode-and-forward multiple-input multiple-output relaying system with orthogonal space–time block code transmissions over doubly correlated Nakagami-m fading channels, where the source, relay and destination nodes are all equipped with multiple antennas. They also include correlated and independent Rayleigh fading channels as special cases. Only when the relay node could receive the signal from the source correctly, it will forward source information to the destination. For two types of receivers at the destination, maximal ratio combining and selection combining, the authors provide the compact closed-form expressions for cumulative distribution function (CDF) and probability density function of the instantaneous end-to-end signal-to-noise ratio (SNR). Besides, the exact analytical expressions are also derived for the outage probability (OP) and symbol error rate (SER) relying on CDF. Furthermore, they present the asymptotic expressions for OP and SER in the high SNR regime, from which they gain an insight into the system performance and derive the achievable diversity order and array gain. The analytical expressions are validated by Monte-Carlo simulations.