多用户正交随机波束形成系统的自适应调制

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI:10.1109/SPAWC.2010.5670965

Chanhong Kim, Jungwoo Lee

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引用次数: 1

摘要

本文提出并分析了一种速率自适应多用户正交随机波束形成(ORBF)系统。目标是在满足目标误码率(BER)约束的同时最大化平均频谱效率(ASE)。首先用一种新的方法推导了调度后信噪比的累积分布函数。平均误码率和日月光均为封闭表达式。最后，在平均误码率约束下，得到了使ASE最大化的最优开关信噪比阈值。仿真结果表明，在ASE方面性能有所提高。

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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Adaptive modulation for multiuser orthogonal random beamforming systems

In this paper, we present and analyze a rate-adaptive multiuser orthogonal random beamforming (ORBF) system. The goal is to maximize the average spectral efficiency (ASE) while satisfying a target bit error ratio (BER) constraint. We first derive the cumulative distribution function of the post-scheduling signal-to-interference-plus-noise ratio (SINR) with a new approach. The average BER and the ASE are derived as closed-form expressions. Finally, we obtain the optimal switching SINR thresholds maximizing the ASE under average BER constraint. Simulation results show performance improvement in terms of ASE.

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来源期刊

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

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