Performance analysis of a multi-user relay selection scheme with predicted SINR in the presence of co-channel interference

2016 8th IEEE International Conference on Communication Software and Networks (ICCSN) Pub Date : 2016-06-04 DOI:10.1109/ICCSN.2016.7586642

Cailing Qin, Kun Xiao

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引用次数: 4

Abstract

A novel relay selection scheme, which is easily implemented in practice, is proposed for wireless multi-user decode-and-forward (DF) relay networks in the presence of the co-channel interference. Differing from the schemes in the literatures, the proposed scheme produces a random number following a specific statistical distribution firstly, and then calculates the predicted signal to interference plus noise ratio (SINR) by adding this random number to the measured SINR. The relay node with the largest predicted SINR is selected for forwarding the data to the destination. The proposed scheme is effective in combating the outdated SINR due to the feedback of the SINR from the destination to the relay. Moreover, the performance of the proposed scheme is theoretically analyzed in terms of average bit error rate (BER) and outage probability. The Monte Carlo simulation results match the numerical results well and validate the advantages of the proposed scheme on the overall performance of multi-user DF relay system.

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多用户中继选择方案在同信道干扰下的性能分析

针对存在同信道干扰的无线多用户中继网络，提出了一种易于实现的中继选择方案。与文献方案不同的是，该方案首先产生一个符合特定统计分布的随机数，然后将该随机数与实测的信噪比相加，计算出预测的信噪比。选择预测SINR最大的中继节点将数据转发到目的地。该方案能够有效地对抗过时的信噪比，因为信噪比可以从目的地反馈到中继。此外，从平均误码率和中断概率两方面对所提方案的性能进行了理论分析。蒙特卡罗仿真结果与数值结果吻合较好，验证了该方案在多用户DF中继系统综合性能方面的优势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 8th IEEE International Conference on Communication Software and Networks (ICCSN)

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