具有不完全信道状态信息的低复杂度MIMO-BICM接收机:基于容量的性能比较

2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) Pub Date : 2010-06-20 DOI:10.1109/SPAWC.2010.5670872

Clemens Novak, G. Matz

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引用次数: 10

摘要

在信道状态信息不完全的多输入多输出(MIMO)比特交织编码调制(BICM)系统中，对软MMSE和最大对数解调器的性能进行了比较。我们使用等效调制信道的容量作为与代码无关的性能指标。我们的结果表明，传统的失匹配解调方法明显不如从一开始就对信道估计进行调节而得到的最优解调方法。数值模拟进一步证明了适当的导频功率分配的重要性。

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Low-complexity MIMO-BICM receivers with imperfect channel state information: Capacity-based performance comparison

This paper provides a performance comparison of soft MMSE and max-log demodulators for multiple-input multiple-output (MIMO) bit-interleaved coded modulation (BICM) systems with imperfect channel state information. We use the capacity of the equivalent modulation channel as a code-independent performance metric. Our results show that the conventional approach of mismatched demodulation is noticeably inferior to optimal demodulators that are derived by conditioning on the channel estimate right from the beginning. Numerical simulations further demonstrate the importance of appropriate pilot power allocation.

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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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