采用二重天线激活矩阵的差分空间调制算法

曹鑫; 王磊; 薛奕蕾

doi:10.7652/xjtuxb202010005

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采用二重天线激活矩阵的差分空间调制算法

更新时间：2025-07-09

- 采用二重天线激活矩阵的差分空间调制算法
- Differential Spatial Modulation with Twofold Antennas Selection
- 西安交通大学学报 2020年54卷第10期页码：36-44
- 作者机构：
  
  西安交通大学电子与信息学部,西安,710049
- 作者简介：
- 基金信息：
  
  : 2020-04-11。作者简介: 曹鑫(1989—),男,硕士生;王磊(通信作者),女,副教授。基金项目: 国家自然科学基金资助项目(61871317)
- DOI：10.7652/xjtuxb202010005
  中图分类号： TN929.5
- 网络首发：2020-10-10，
  
  纸质出版：2020
- 稿件说明：
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曹鑫, 王磊, 薛奕蕾. 采用二重天线激活矩阵的差分空间调制算法[J]. 西安交通大学学报, 2020,54(10):36-44.

Differential Spatial Modulation with Twofold Antennas Selection[J]. 2020, 54(10): 36-44.
曹鑫, 王磊, 薛奕蕾. 采用二重天线激活矩阵的差分空间调制算法[J]. 西安交通大学学报, 2020,54(10):36-44. DOI： 10.7652/xjtuxb202010005.

Differential Spatial Modulation with Twofold Antennas Selection[J]. 2020, 54(10): 36-44. DOI： 10.7652/xjtuxb202010005.

摘要

针对传统差分空间调制算法(DSM)不能获取发射分集的问题

提出了一种采用二重天线激活矩阵的差分空间调制算法

简称TA-DSM算法。该算法对天线激活矩阵集合中的元素进行了两次独立选择

得到两个天线激活矩阵。再将这两个矩阵分别和P个Alamouti矩阵的第1行和第2行相乘

以此获得TA-DSM发送信号。由于该算法使用了两个天线激活矩阵

所以与现有的空时编码DSM(STBC-DSM)相比

TA-DSM可以传递更多的比特数

从而获得更高的频谱效率。因此

在频谱效率相同的情况下

TA-DSM可以拥有更好的误码性能。同时

文中系统地提出了构造天线激活矩阵的简单方法

使TA-DSM可以获得二阶发射分集。最后

针对TA-DSM提出了低复杂度解码算法。仿真结果表明

TA-DSM方案比现有的STBC-DSM具有更好的误码性能

当频谱效率为1.33 b/(s·Hz)时

相比STBC-DSM

TA-DSM可以获得约4 dB的性能增益; 当频谱效率为2 b/(s·Hz)时

TA-DSM可以获得约1.5 dB的性能增益。

Abstract

A new multiple-input multiple-output(MIMO)transmission scheme termed differential spatial modulation with twofold antennas selection(TA-DSM)is proposed to solve the problem that the traditional differential spatial modulation(DSM)cannot achieve transmit diversity. In this scheme

one set of antenna activation matrices(AMs)is employed

from which a pair of AMs are respectively selected. Then the two selected AMs are combined with the first row and the second row of P Alamouti matrices

respectively

to generate the TA-DSM signal. Due to employing an extra AM

the proposed TA-DSM scheme delivers more bits

resulting in higher spectral efficiency than the existing typical DSM schemes

for example

the STBC-DSM scheme. In other words

TA-DSM can achieve better bit error performance than the existing typical DSM schemes when they are in the same spectral efficiency. Also

a simple and systematic method to construct the set of AMs and modulation matrices is presented

which guarantees that t

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