Outage Analysis of User Scheduling with Antenna Selection in Multiuser Two-Way AF Relaying

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI:10.1109/ICDECOM.2011.5738524

P. K. Upadhyay, S. Prakriya

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引用次数: 5

Abstract

We investigate the outage performance of a user scheduling with antenna selection (USAS) scheme for a cellular multiuser two-way relay system over a Rayleigh flat-fading environment. Here, a multi- antenna base station communicates with several mobile users via an amplify-and-forward (AF) relay. The USAS strategy opportunistically selects the best user among multiple users and the best antenna at the base station for bidirectional communication such that the overall system outage probability is minimized. We derive an exact expression for outage probability of the considered scheme that is applicable for all values of signal-to-noise ratio (SNR). To gain better insights and identify key parameters, we present an approximate expression of outage probability in closed-form under a high SNR assumption. Finally, we highlight the impact of antenna selection on the achievable diversity of the considered scheme under various channel conditions. Numerical and simulation results are presented to confirm the performance gain of the considered scheme.

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多用户双向自动对焦中继中带天线选择的用户调度中断分析

在瑞利平衰落环境下，研究了一种带天线选择的用户调度(USAS)方案在蜂窝多用户双向中继系统中的中断性能。在这里，一个多天线基站通过一个放大和转发(AF)中继与几个移动用户通信。USAS策略在多个用户中选择最佳用户，并在基站中选择最佳天线进行双向通信，从而使整个系统的中断概率最小化。我们推导出了适用于所有信噪比值的所考虑方案的停电概率的精确表达式。为了更好地了解和识别关键参数，我们在高信噪比假设下提出了封闭形式的停机概率近似表达式。最后，我们强调了天线选择对所考虑的方案在各种信道条件下可实现的分集的影响。数值和仿真结果验证了所考虑方案的性能增益。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2011 International Conference on Devices and Communications (ICDeCom)

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