Analysis of Modulation and Coding Scheme Selection in MIMO-OFDM Systems

2006 First International Conference on Communications and Electronics Pub Date : 2006-10-01 DOI:10.1109/CCE.2006.350807

Shiming Liu, Xing Zhang, Wenbo Wang

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引用次数: 8

Abstract

Multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) systems can provide significant space diversity and combat multi-path fading, thus attracting increasing attention for the design of future broadband wireless communication systems. One enhancement technique commonly used in such systems is adaptive modulation and coding (AMC) for link adaptation. With AMC, the modulation and coding scheme (MCS) is adaptively selected based on channel quality indication (CQI). In this paper, we give a comprehensive analysis of mapping between signal to interference plus noise ratio (SINR) fed beck by the mobile station and MCS to be used to transmit dada, while taking into account hybrid ARQ (HARQ) operation. Then we apply such mapping criteria to MIMO-OFDM systems and develop a systematic algorithm for MCS selection to maximize the system throughput. The performance of the proposed approach is evaluated by extensive system level simulation. Results indicate that compared to traditional MCS selection schemes significant system throughput gain can be achieved by this method.

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MIMO-OFDM系统调制与编码方案选择分析

多输入多输出正交频分复用(MIMO-OFDM)系统可以提供显著的空间分集和抗多径衰落，因此在未来宽带无线通信系统的设计中越来越受到关注。在这类系统中常用的一种增强技术是用于链路自适应的自适应调制和编码(AMC)。基于信道质量指示(CQI)自适应选择调制和编码方案(MCS)。本文综合分析了移动站馈电信号的信噪比(SINR)与用于传输数据的MCS之间的映射关系，同时考虑了混合ARQ (HARQ)操作。然后，我们将这种映射准则应用于MIMO-OFDM系统，并开发了一种系统的MCS选择算法，以最大化系统吞吐量。通过广泛的系统级仿真对该方法的性能进行了评估。结果表明，与传统的MCS选择方案相比，该方法可以获得显著的系统吞吐量增益。

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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2006 First International Conference on Communications and Electronics

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