Performance analysis of high-rate generalized space code index modulation system

BIAN Lina; ZHANG Qianyu; WU Jiayan

doi:10.11959/j.issn.1000-0801.2025011

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Performance analysis of high-rate generalized space code index modulation system

Research and Development | 更新时间：2025-02-07

- Performance analysis of high-rate generalized space code index modulation system
- Telecommunications Science Vol. 41, Issue 1, Pages: 99-110(2025)
- 作者机构：
  
  浙江理工大学科技与艺术学院，浙江绍兴 312369
- 作者简介：
- 基金信息：
  
  Scientific Research Project of Keyi College of Zhejiang Sci-Tech University(KY2024033)
- DOI：10.11959/j.issn.1000-0801.2025011
  CLC： TN929.5
- Received：28 August 2024，
  
  Revised：2024-11-21，
  
  Published：20 January 2025
- 稿件说明：
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卞李娜,张倩瑜,吴佳燕.高速率广义空间码索引调制系统的性能分析[J].电信科学,2025,41(01):99-110.

BIAN Lina,ZHANG Qianyu,WU Jiayan.Performance analysis of high-rate generalized space code index modulation system[J].Telecommunications Science,2025,41(01):99-110.
卞李娜,张倩瑜,吴佳燕.高速率广义空间码索引调制系统的性能分析[J].电信科学,2025,41(01):99-110. DOI： 10.11959/j.issn.1000-0801.2025011.

BIAN Lina,ZHANG Qianyu,WU Jiayan.Performance analysis of high-rate generalized space code index modulation system[J].Telecommunications Science,2025,41(01):99-110. DOI： 10.11959/j.issn.1000-0801.2025011.

摘要

传统的码索引调制（code index modulation，CIM）系统仅通过扩频码和星座符号来承载信息，能量效率和频谱效率都较低，而附加相位作为一种独特的调制符号来承载信息，具有低传输功耗的特点。为了充分利用多天线索引来提高频谱效率，提出了基于低功耗设计的高速率广义空间码索引调制（high-rate generalized space code index modulation，HR-GS-CIM）系统。HR-GS-CIM系统通过使用附加相位替代传统的调制符号，并且通过遗传算法（genetic algorithm，GA）来优化设计附加相位，展现了极高的能效优势和性能优势。同时，HR-GS-CIM 系统通过引入广义和空间索引的方法，将附加相位、扩频码以及天线索引进行联合映射选择，并采用低复杂度的联合映射选择算法，极大地提高了系统频谱效率。此外，分析了HR-GS-CIM系统的理论性能，并且仿真验证了HR-GS-CIM系统的理论和仿真性能一致。最后，与传统的CIM系统等对比，验证了所提 HR-GS-CIM系统具有显著的性能增益。

Abstract

Traditional code index modulation (CIM) systems only carry information through spreading codes and constellation symbols

with low energy efficiency and spectral efficiency. However

adding phase as a unique modulation symbol to carry information has the advantage of low transmission power consumption. To fully utilize the multi-antenna lead to improve spectral efficiency

a high-rate generalized space code index modulation (HR-GS-CIM) system with low-power design was proposed. The traditional modulation symbols were replaced with the additional phase by the HR-GS-CIM system

and the genetic algorithm (GA) was used to optimize the design of the additional phase

which could acquire high energy efficiency advantage and performance advantage. At the same time

the methods of generalized and spatial indexing were introduced to jointly map select the additional phase

spreading code

and antenna lead

and a low-complexity joint mapping selection algorithm was adopted to greatly improve the system’s spectral efficiency. Furthermore

the theoretical performance of the HR-GS-CIM system was analyzed and the consistency between the theoretical and simulated performance was verified. Finally

compared with traditional CIM systems

the simulation results show that the proposed HR-GS-CIM system has significant performance gain.

关键词

Keywords

references

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