| 摘要: |
| 编码的多入多出（MIMO）迭代接收技术，是一种高频谱利用率、高性能的接收技术。本文对这种迭代接收机进行了分析。为便于硬件实现，利用QAM调制的特性，对MIMO信号检测中的软信息计算提出了简化方法。仿真结果表明，简化方法对系统性能影响很小。 |
| 关键词: 多入多出 信号检测 QAM调制 迭代接收 软符号 外信息 |
| DOI：10.3969/j.issn.1001-893X. |
| Received:April 25, 2005Revised:October 23, 2005 |
| 基金项目:国家高技术研究发展计划(863计划);国家高技术研究发展计划(863计划) |
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| A Simplified Method for Calculating Soft Information in MIMO Signal Detection |
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| Abstract: |
| Iterative receiving technique for coded Multiple Input and Multi Output(MIMO) systems,which is analyzed in this paper, is very promising in spectrum efficiency and performance.In order to implement it by hardware,a method of simplification for calculating soft information in MIMO signal detection is proposed.Simulation results show that performances of decoding suffer little from the simplified scheme. |
| Key words: multi-input multi-output(MIMO),signal detection,QAM modulation,iterative receiving,soft symbol,extrinsic information |
