A Low Computational Complexity MIMO Differential Detection Scheme Based on Quasi-Orthogonal Space-Time Block Codes

SUN De-fu; TANG You-xi; SHAO Shi-hai; MA Wan-zhi

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A Low Computational Complexity MIMO Differential Detection Scheme Based on Quasi-Orthogonal Space-Time Block Codes

更新时间：2025-07-16

- A Low Computational Complexity MIMO Differential Detection Scheme Based on Quasi-Orthogonal Space-Time Block Codes
- Acta Electronica Sinica Vol. 35, Issue 10, Pages: 1849-1853(2007)
- 作者机构：
  
  电子科技大学通信抗干扰技术国家级重点实验室,四川,成都,610054
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN914
- Published：2007
- 稿件说明：
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SUN De-fu, TANG You-xi, SHAO Shi-hai, et al. A Low Computational Complexity MIMO Differential Detection Scheme Based on Quasi-Orthogonal Space-Time Block Codes[J]. Acta Electronica Sinica, 2007, 35(10): 1849-1853.
DOI：

SUN De-fu, TANG You-xi, SHAO Shi-hai, et al. A Low Computational Complexity MIMO Differential Detection Scheme Based on Quasi-Orthogonal Space-Time Block Codes[J]. Acta Electronica Sinica, 2007, 35(10): 1849-1853. DOI：

摘要

针对可实现全速率传输的准正交空时码

提出了一种低复杂度的准正交MIMO差分检测方法.该方法在发射端对数据比特进行联合星座映射

构造准正交空时码进行差分编码;接收端采用最大似然准则对两组星座符号对(symbol pair)并行差分检测.本文提出的星座集合及联合星座映射方法简化了接收端检测算法

降低了检测计算复杂度.

Abstract

A low computational complexity differential detection scheme for Multiple Input Multiple Output system is proposed which is based on the full rate quasi-orthogonal space-time block codes.The transmitted bits are jointly mapped to construct quasi-orthogonal space-time block codes and the codes are used to perform differential encoding.At the receiver

Maximum Likelihood (ML) criterion is used to differentially decode the symbol pairs.The constellation set and joint constellation mapping defined in this paper simplify the detection algorithm and reduce the detection computational complexity.

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