基于正交空时分组码的空间脉冲位置调制

毛忠阳; 李寅龙; 刘锡国; 徐建武; 刘敏; 伍强

doi:10.13756/j.gtxyj.2021.02.003

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基于正交空时分组码的空间脉冲位置调制

光通信系统与网络技术

- 基于正交空时分组码的空间脉冲位置调制
- Orthogonal Space Time Block Coding for Spatial Pulse Position Modulation
- 光通信研究 2021年第2期页码：14-19
- 作者机构：
  
  1.海军航空大学，山东　烟台　264001
  2.解放军91423部队，山东　莱阳　265201
- 作者简介：
  
  毛忠阳（1979-），男，河南新乡人。教授，博士，主要研究方向为无线光通信和新体制通信。
  李寅龙，硕士。E-mail：1282846014@qq.com
- 基金信息：
  
  国家自然科学基金资助项目(61701518);山东省“泰山学者”建设工程专项经费基金资助项目(ts20081130)
- DOI：10.13756/j.gtxyj.2021.02.003
  中图分类号： TN929.1
- 纸质出版日期：2021-04-10，
  
  收稿日期：2020-09-06，
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毛忠阳, 李寅龙, 刘锡国, 等. 基于正交空时分组码的空间脉冲位置调制[J]. 光通信研究, 2021,(2):14-19.

MAO Zhong-yang, LI Yin-long, LIU Xi-guo, et al. Orthogonal Space Time Block Coding for Spatial Pulse Position Modulation[J]. Study on Optical Communications, 2021,(2):14-19.
毛忠阳, 李寅龙, 刘锡国, 等. 基于正交空时分组码的空间脉冲位置调制[J]. 光通信研究, 2021,(2):14-19. DOI： 10.13756/j.gtxyj.2021.02.003.

MAO Zhong-yang, LI Yin-long, LIU Xi-guo, et al. Orthogonal Space Time Block Coding for Spatial Pulse Position Modulation[J]. Study on Optical Communications, 2021,(2):14-19. DOI： 10.13756/j.gtxyj.2021.02.003.

摘要

针对在湍流信道下空间脉冲位置调制（SPPM）系统误码性能较差的问题，文章将空时分组码与空间调制技术结合，提出了基于比特补码正交空时分组码的空间脉冲位置调制（BCOSTBC-SPPM），利用空时编码增加信息冗余度以改善系统误码性能。同时基于最大似然（ML）检测推导了系统的理论误比特率上界，并通过蒙特卡洛仿真对理论上界进行了验证。仿真结果表明，BCOSTBC-SPPM的误码性能相比SPPM有较大提升。在弱湍流信道下，当系统误比特率为10

-4

时，（4，2，4）-BCOSTBC-SPPM相比（4，1，4）-SPPM信噪比改善约10 dB。该方式相较于传统正交空时编码方案在频谱效率方面有一定提升，实现了系统有效性和可靠性的合理权衡。

Abstract

The system performance of Spatial Pulse Position Modulation (SPPM) is poor in turbulent channels. In order to solve this problem

the bit complement orthogonal space time Block Coding for Spatial Pulse Position Modulation (BCOSTBCSPPM) is proposed by combining space-time block codes with spatial modulation technology to improve the bit error rate performance using the space-time coding information redundancy. Based on Maximum Likelihood (ML) detection

the bit error rate expression of the proposed modulation is derived and is verified by Monte Carlo simulation. The simulation results show that compared with SPPM

the error performance of BCOSTBC-SPPM is greatly improved. At the bit error rate of 10

-4

4) -BCOSTBC-SPPM improves the signal-noise ratio by about 10 dB when comparing with (4

4) -SPPM under weak turbulence. Compared with the traditional orthogonal space-time coding scheme

this method has a certain improvement in spectrum efficiency

and realizes a reasonable trade-off between system effectiveness and reliability.

关键词

大气激光通信空间调制正交空时编码空间脉冲位置调制

Keywords

atmospheric laser communicationsspatial modulationorthogonal space-time block codeSPPM

references

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Jaiswal A, Bhatnager M R, Jain V K. Performance of Optical Space Shift Keying over Gamma-Gamma Fading with Pointing Error[J]. IEEE Photonics Journal, 2017, 9(2): 7200716.

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王惠琴, 柯熙政, 赵黎, 等.大气激光通信中的正交空时块码[J].光学学报, 2009, 29(s2): 63-68.

王惠琴, 李亚婷, 曹明华, 等.大气激光通信中的多层空间脉冲位置幅度调制[J].光子学报, 2020, 49(5): 61-68.

Kono Y, Pandey A, Sahu A.BER Analysis of Lognormal and Gamma-Gamma Turbulence Channel under Different Modulation Techniques for FSO System[C]//2019 IEEE 3rd International Conference on Trendsin Electronics and Informatics(ICOEI). Tirunelveli, India: IEEE, 2019: 1385-1388.

Craig J W.A New, Simple and Exact Result for Calculating the Probability of Error for Two-Dimensional Signal Constellations[C]//1991 IEEE Military Communications Conference. McLean, VA, USA: IEEE, 2002: 571-575.

Ozbilgin T, Koca M. Optical Spatial Modulation over Atmospheric Turbulence Channels[J]. Journalof Lightwave Technology, 2015, 33(11): 2313-2323.

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