具有多个主收发器的认知MIMO中继

Phee Lep Yeoh, M. Elkashlan, K. Kim, T. Duong, G. Karagiannidis
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引用次数: 15

摘要

我们研究了具有底层频谱共享的认知多输入多输出(MIMO)中继网络中主收发器集群的影响。在这种网络中,我们提出天线选择作为一种干扰感知设计,以满足主从网络的功率约束。为了证明这一点,我们考虑了在主从网络中采用最大比组合(TAS/MRC)的发射天线选择。考虑到这一点,我们导出了独立Nakagami-m衰落信道上的中断概率和符号错误率(SER)的新的闭型渐近表达式。我们的研究结果带来了一些新的基本见解。我们特别强调,当辅助网络中的最大发射功率与主网络中的峰值干扰温度成正比时,TAS/MRC实现了完全的分集增益。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cognitive MIMO relaying with multiple primary transceivers
We examine the impact of clusters of primary transceivers in cognitive multiple-input multiple-output (MIMO) relay networks with underlay spectrum sharing. In such a network, we propose antenna selection as an interference-aware design to satisfy the power constraints in the primary and secondary networks. To demonstrate this, we consider transmit antenna selection with maximal ratio combining (TAS/MRC) in the primary and secondary networks. With this in mind, we derive new closed-form asymptotic expressions for the outage probability and the symbol error rate (SER) over independent Nakagami-m fading channels. Our results lead to several new fundamental insights. In particular, we highlight that TAS/MRC achieves a full diversity gain when the maximum transmit power in the secondary network is proportional to the peak interference temperature in the primary network.
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