Multi-mode selective OFDM index modulation transmission scheme

GUO Yi; ZHU Yuchen; WANG Yiqing; LIU Gang; FU Shaozhong

doi:10.11959/j.issn.1000-436x.2025001

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Multi-mode selective OFDM index modulation transmission scheme

Papers | 更新时间：2025-02-13

- Multi-mode selective OFDM index modulation transmission scheme
- Journal on Communications Vol. 46, Issue 1, Pages: 23-34(2025)
- 作者机构：
  
  西安电子科技大学空天地一体化综合业务网全国重点实验室，陕西西安 710071
- 作者简介：
- 基金信息：
  
  The Natural Science Basic Research Program of Shaanxi Province(2024JC-YBMS-533)
- DOI：10.11959/j.issn.1000-436x.2025001
  CLC： TN929.1
- Received：31 May 2024，
  
  Revised：2024-08-07，
  
  Published：25 January 2025
- 稿件说明：
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郭漪,朱煜晨,王翊卿等.多模式选择的OFDM索引调制传输方案[J].通信学报,2025,46(01):23-34.

GUO Yi,ZHU Yuchen,WANG Yiqing,et al.Multi-mode selective OFDM index modulation transmission scheme[J].Journal on Communications,2025,46(01):23-34.
郭漪,朱煜晨,王翊卿等.多模式选择的OFDM索引调制传输方案[J].通信学报,2025,46(01):23-34. DOI： 10.11959/j.issn.1000-436x.2025001.

GUO Yi,ZHU Yuchen,WANG Yiqing,et al.Multi-mode selective OFDM index modulation transmission scheme[J].Journal on Communications,2025,46(01):23-34. DOI： 10.11959/j.issn.1000-436x.2025001.

摘要

针对基于索引调制的正交频分复用（OFDM-IM）技术在索引信息受限于载波激活模式数量和单一信号星座模式的问题，提出一种多模式选择的OFDM索引调制传输方案。该方案通过设计可区分的信号星座，使得模式组内和模式组间相邻星座点之间的欧氏距离相等，从而提升误码率。此外，通过在多模式选择索引调制的索引信息中引入全子载波激活模式，显著提升系统的频谱效率。同时，由于所提方案的子载波激活模式与二进制数字相匹配，系统能够采用低复杂度的对数似然比检测算法，并保持良好的误码率性能。理论分析与仿真结果表明，在加性白高斯噪声信道和瑞利衰落信道下，相较于OFDM-IM、OFDM-SSIM和MMS-OFDM-IM传输方案，所提方案有效提升了频谱效率且保持了良好的误码率。

Abstract

In order to solve the problem that index information was limited by the number of subcarrier activation patterns and single signal constellation mode in orthogonal frequency division multiplexing with index modulation (OFDM-IM)

a multi-mode selective OFDM index modulation transmission scheme was proposed. The proposed scheme achieved better bit error rate performance by designing distinguishable signal constellations so that the Euclidean distances between adjacent constellation points within and between pattern groups were equal. In addition

the spectral efficiency of the system was improved by introducing full subcarrier activation patterns into the index information of multi-mode selective index modulation. Meanwhile

due to the subcarrier activation mode of the proposed scheme matching binary digits

the system could adopt a low complexity log likelihood ratio detection algorithm and maintained good bit error rate performance. Theoretical analysis and simulation results show that the proposed scheme effectively improves spectral efficiency and maintains good bit error rate performance compared with OFDM-IM

OFDM-SSIM and MMS-OFDM-IM transmission schemes in additive Gaussian white noise channel and Rayleigh fading channel.

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references

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