Simplified MD-LSD demapping algorithm for BICM-ID systems with multi-dimensional mappings

GONG Feng-kui; GE Jian-hua; WANG Yong

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Simplified MD-LSD demapping algorithm for BICM-ID systems with multi-dimensional mappings

更新时间：2024-10-14

- Simplified MD-LSD demapping algorithm for BICM-ID systems with multi-dimensional mappings
- Issue 2, Pages: 111-115(2008)
- 作者机构：
  
  1. 西安电子科技大学ISN国家重点实验室
  2. 西安电子科技大学ISN国家重点实验室,陕西,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN761
- Published：2008
- 稿件说明：
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GONG Feng-kui, GE Jian-hua, WANG Yong. Simplified MD-LSD demapping algorithm for BICM-ID systems with multi-dimensional mappings[J]. 2008, (2): 111-115.
DOI：

GONG Feng-kui, GE Jian-hua, WANG Yong. Simplified MD-LSD demapping algorithm for BICM-ID systems with multi-dimensional mappings[J]. 2008, (2): 111-115. DOI：

摘要

将二维映射下的软输入软输出解映射MAX-LOG-MAP算法扩展到多维映射比特交织编码调制及迭代译码(BICM-ID)系统

并首次结合多天线系统下的列表球形译码

提出一种简化MD-LSD(multi-dimensional list sphere decoding)算法。新算法大幅降低了多维解映射的计算复杂度。仿真结果表明

列表长度满足一定范围时

采用简化MD-LSD算法解映射算法的性能损失可以忽略。

Abstract

The soft in soft out MAX-LOG-MAP algorithm of conventional mappings was expanded to the BICM-ID sys- tem with multi-dimensional mappings. A multi-dimensional list sphere decoding （MD-LSD） algorithm was also proposed by using the list sphere decoding algorithm of multi-antenna systems. Compared with the MD-MAX-LOG-MAP algo- rithm

the computational complexity of MD-LSD was decreased significantly. Simulation results show that the perform- ance degradation of the simplified MD-LSD algorithm can be ignored when the list length is in a certain range.

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