块衰落信道的编码调制

Dieter Duyck, J. Boutros, M. Moeneclaey
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引用次数: 3

摘要

块衰落信道模型对城市环境下的许多系统非常有用。在追求高速率、全分集和高编码增益的高性能时,必须使用编码调制。当使用线性预编码时,纠错码可以专注于获得较高的编码增益,并且不受编码速率的限制,因此不会牺牲带宽。然而,由于无法处理衰落增益的随机性,在块衰落信道上编码调制的最佳预编码方案尚不清楚。研究了衰落空间中块衰落信道的编码调制。这种几何方法产生了更多的洞察力,并允许考虑到衰落的随机性。它可以用来生成系统参数,使单词错误率性能接近于中断概率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Coded modulations for block fading channels
The block fading channel model is very useful for many systems in urban environments. When striving for high performance implying high rate, full-diversity and excellent coding gain, coded modulations have to be used. When linear precoding is used, error-correcting codes can focus on achieving a high coding gain and are not constrained in coding rate so that no bandwidth is sacrificed. However, optimal precoding schemes for coded modulations on block fading channels are not known because of the inability to deal with the randomness of the fading gains. We study coded modulations for block fading channels in the fading space. This geometric approach yields more insight and allows to take into account the randomness of the fading. It can be used to generate the system parameters so that the word error rate performance approaches the outage probability closely.
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