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Relay Selection Schemes for Cooperative Communications Systems Sensor Networks

机译:协作通信系统传感器网络的中继选择方案

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摘要

Due to being so effective to mitigate the fading effect of wireless channels relay networks have received so much attention recently. Especially because relays are typically small, power limited and low cost and also can remove the problem of attenuation of signal due to propagation loss. Moreover increasing the number of relays improves the system performance and also using more power. The system efficiency can be enhanced by selecting relays in better conditions. In this paper single and multiple relay selection schemes is proposed applying Principal Component Analysis (PCA) method. The main idea of PCA method is selecting relays according to the eigenvector corresponding to the largest eigenvalue of channels from source to the destination. The PCA method provides an acceptable tradeoff between better power and Bit Error Rate (BER) performances. The higher efficiency is achieved by Appling PCA which demonstrated in power performance and this management of total power usage makes relay networks more practical.
机译:由于非常有效地减轻了无线信道的衰落效应,因此中继网络最近受到了极大的关注。特别是因为继电器通常很小,功率有限且成本低廉,并且还可以消除由于传播损耗引起的信号衰减问题。此外,增加继电器的数量可以改善系统性能,并使用更多的功率。通过在更好的条件下选择继电器,可以提高系统效率。本文提出了采用主成分分析(PCA)方法的单继电器选择方案和多继电器选择方案。 PCA方法的主要思想是根据特征向量选择中继器,特征向量对应于从源到目的地的最大信道特征值。 PCA方法在更好的功率和误码率(BER)性能之间提供了可接受的权衡。通过应用PCA可以实现更高的效率,这在电源性能上得到了证明,这种对总电源使用量的管理使中继网络更加实用。

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