Signed Optical Quadrature Spatial Modulation in Free Space Optical Communication

ZHAO Hui; LIU Liang; HAN Lili; QIN Yulin; LI Junnan

doi:10.13756/j.gtxyj.2024.230075

您当前的位置：

首页 >

文章列表页 >

Signed Optical Quadrature Spatial Modulation in Free Space Optical Communication

更新时间：2024-05-30

- Signed Optical Quadrature Spatial Modulation in Free Space Optical Communication
- Study on Optical Communications Issue 3, Pages: 23007501-23007508(2024)
- 作者机构：
  
  1.重庆邮电大学　通信与信息工程学院，重庆　400065
  2.信号与信息处理重庆市重点实验室，重庆　400065
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2024.230075
  CLC： TN929.12
- Published：10 June 2024，
  
  Received：18 May 2023，
  
  Revised：29 May 2023，
扫描看全文
赵辉，刘亮，韩利利，等.自由空间光通信中的带符号光正交空间调制[J].光通信研究，2024（3）：230075.

Zhao H, Liu L, Han L L, et al. Signed Optical Quadrature Spatial Modulation in Free Space Optical Communication[J]. Study on Optical Communications, 2024（3）：230075.
赵辉，刘亮，韩利利，等.自由空间光通信中的带符号光正交空间调制[J].光通信研究，2024（3）：230075. DOI： 10.13756/j.gtxyj.2024.230075.

Zhao H, Liu L, Han L L, et al. Signed Optical Quadrature Spatial Modulation in Free Space Optical Communication[J]. Study on Optical Communications, 2024（3）：230075. DOI： 10.13756/j.gtxyj.2024.230075.

摘要

【目的】

针对光正交空间调制（OQSM）中频谱效率较低和系统吞吐量受限的问题，文章在自由空间光通信（FSOC）中提出了一种带符号的光正交空间调制（SOQSM）方案；另外，针对OQSM性能分析时所用信道不适合所有湍流的情况，文章采取适合所有湍流强度的Málaga信道对系统的误码性能进行分析。

【方法】

首先，该方案在发送端将输入的二进制比特流划分为5个部分，第1个部分用于星座符号映射，后4个部分用于激光器映射；然后，星座符号映射用于传输星座符号及其逆符号的实部和虚部；激光器映射分为同相相位与正交相位两部分，用于激活激光器的序列映射；最后，通过信道进行传输，在接收端进行信号的接收和处理。

【结果】

相比OQSM，SOQSM在一个传输周期内空间域额外携带了2log

比特的信息，并在符号域和空间域分别计算出平均误码率上界，最终得到SOQSM方案的平均误码率上界，其中计算平均误码率上界的方法具有较好的收敛性。该方案较大程度地提高了系统的频谱效率和传输速率，拥有较好的误码性能。

【结论】

蒙特卡洛仿真结果表明：在频谱效率相同时，相比光空间调制（OSM）和OQSM，SOQSM方案的误码性能更好，能在信噪比为16 dB时就达到10

-6

；当调制阶数相同时，SOQSM的误码

性能更优，特别是在高信噪比时，仿真与理论契合度较高。在Málaga信道中弱湍流的误码性能更好；另外，不同湍流强度对SOQSM方案误码性能趋势的影响较小，但随着信噪比提高，影响会逐渐增大。因此，SOQSM相比OQSM和OSM具有更好的误码性能。

Abstract

【Objective】

Aiming at the problems of low spectral efficiency and limited system throughput in Optical Quadrature Spatial Modulation (OQSM)

a Signed Optical Quadrature Spatial Modulation (SOQSM) scheme is proposed in Free Space Optical Communication (FSOC) in this paper. In addition

in view of the fact that the channel used in the performance analysis of OQSM is not suitable for all turbulence

this paper also adopts the Málaga channel

which is suitable for all turbulence intensities to analyze the bit error performance of the system.

【Methods】

First

the scheme divides the input binary bit stream into five parts at the sending end. The first part is used for constellation symbol mapping

and the last four parts are used for laser mapping. Then

the constellation symbol mapping is used to transmit the real and imaginary parts of the constellation symbol and its inverse symbol. The laser mapping is divided into two parts

the in-phase phase and the quadrature phase

which are used to activate the laser sequence mapping. Finally

after transmitting through the channel

the signal received and processed at the receiving end.

【Results】

Compared with OQSM

SOQSM carries an additional2log

bits of information in the space domain within a transmission period. The upper bound of the average bit error rate is then calculated in the symbol domain and the space domain respectively. Finally

the upper bound of the average bit error rate of the SOQSM scheme is obtained

and the method of calculating the upper bound of the average bit error rate has good convergence. This solution greatly improves the spectral efficiency and transmission rate of the system

and has good bit error rate performance.

【Conclusion】

The Monte Carlo simulation results show that compared with Optical Spatial Modulation (OSM) and OQSM

the bit error performance of the SOQSM scheme is better when the spectral efficiency is the same. The bit error rate can reach 10

-6

when the signal-to-noise ratio is 16dB. When the modulation order is the same

the bit error performance of SOQSM is better

especially when the signal-to-noise ratio is high. It is also shown that the simulation and theory fit well. In the Málaga channel

the bit error rate performance of the weak turbulence is better. In addition

different turbulence intensities have little influence on the trend of the bit error rate performance of the SOQSM scheme. However

with the increase of the signal-to-noise ratio

the influence will gradually increase. Therefore

SOQSM has better bit error rate performance than OQSM and OSM.

关键词

自由空间光通信光空间调制频谱效率误码性能

Keywords

FSOCOSMspectral efficiencybit error performance

references

Khalighi M A, Uysal M. Survey on Free Space Optical Communication: A Communication Theory Perspective[J]. IEEE Communications Surveys & Tutorials, 2014, 16(4): 2231-2258.

Miglani R, Malhotra J S. An Innovative Approach for Performance Enhancement of 320 Gbps Free Space Optical Communication System over Turbulent Channel[J]. Optical and Quantum Electronics, 2019, 51: 1-26.

吴晓军, 王红星, 李笔锋, 等. 不同传输环境下大气湍流对无线光通信衰落特性影响分析[J]. 中国激光, 2015, 42(5): 270-277.

Wu X J, Wang H X, Li B F, et al. Affect Analysis of Atmospheric Turbulence on Fading Characteristics in Free-space Optical System over Different Environments[J]. Chinese Journal of Lasers, 2015, 42(5): 270-277.

Bhatnagar M R, Ghassemlooy Z. Performance Analysis of Gamma-gamma Fading FSO MIMO Links with Pointing Errors[J]. Journal of Lightwave Technology, 2016, 34(9): 2158-2169.

Özbilgin T, Koca M. Optical Spatial Modulation over Atmospheric Turbulence Channels[J]. Journal of Light-wave Technology, 2015, 33(11): 2313-2323.

Abou-Rjeily C, Kaddoum G. Optical Spatial Modulation for FSO IM/DD Communications with Photon-counting Receivers: Performance Analysis, Transmit Diversity Order and Aperture Selection[J]. IEEE Journal on Selected Areas in Communications, 2019, 37(9): 2053-2068.

曹明华, 宋梨花, 王惠琴, 等. 广义无线光空间调制中的低复杂度OB-MMSE检测算法[J]. 光学学报, 2019, 39(12): 37-45.

Cao M H, Song L H, Wang H Q, et al. Low-complexity OB-MMSE Detection Algorithm for Generalized Wireless-optical Spatial Modulation[J]. Acta Optica Sinica, 2019, 39(12): 37-45.

张悦, 王惠琴, 曹明华, 等. 无线光通信中的增强型光空间调制[J]. 光学学报, 2020, 40(3): 28-37.

Zhang Y, Wang H Q, Cao M H, et al. Enhanced Optical Modulation in Wireless Optical Communication[J]. Acta Optica Sinica, 2020, 40(3): 28-37.

王惠琴, 杨顺信, 张悦, 等. 大气激光通信中的完全光广义空间调制[J]. 光学学报, 2020, 40(13): 7-13.

Wang H Q, Yang S X, Zhang Y, et al. Fully Optical Generalized Spatial Modulation in Atmospheric Laser Communication[J]. Acta Optica Sinica, 2020, 40(13): 7-13.

Celik Y, Çolak S A. Quadrature Spatial Modulation Sub-carrier Intensity Modulation (QSM-SIM) for VLC[J]. Physical Communication, 2020, 38: 100937.

Bhowal A, Kshetrimayum R S. Advanced Optical Spatial Modulation Techniques for FSO Communication[J]. IEEE Transactions on Communications, 2020, 69(2): 1163-1174.

Ansari I S, Yilmaz F, Alouini M S. Performance Analysis of Free-space Optical Links over Málaga Turbulence Channels with Pointing Errors[J]. IEEE Transactions on Wireless Communications, 2015, 15(1): 91-102.

Abu-Hudrouss A M, El Astal M T O, Al Habbash A H, et al. Signed Quadrature Spatial Modulation for MI-MO Systems[J]. IEEE Transactions on Vehicular Technology, 2020, 69(3): 2740-2746.

Cheng C C, Sari H, Sezginer S, et al. Enhanced Spatial Modulation with Multiple Signal Constellations[J]. IEEE Transactions on Communications, 2015, 63(6): 2237-2248.

赵辉, 马薇雯, 李进, 等. Málaga湍流信道下改进型光广义空间调制[J]. 通信学报, 2022, 43(10): 157-166.

Zhao H, Ma W W, Li J, et al. Improved Optical Generalized Spatial Modulation in Málaga Turbulent Channel[J]. Journal on Communications, 2022, 43(10): 157-166.

Prudnikov A P, Brychkov Y A, Marichev O I. Integrals and Series[M]. New York: Gordon and Breach Science Publishers, 1990.

Jaiswal A, Bhatnagar M R, Jain V K. Performance Evaluation of Space Shift Keying in Free-space Optical Communication[J]. Journal of Optical Communications and Networking, 2017, 9(2): 149-160.

Jaiswal A, Bhatnagar 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): 1-16.

柯熙政, 王晨昊, 陈丹. Malaga大气湍流信道下副载波调制系统相位噪声分析[J]. 通信学报, 2018, 39(11): 80-86.

Ke X Z, Wang C H, Chen D. Effects of Phase Noise on Subcarrier Modulation Performance over Malaga Turbulence Channel[J]. Journal on Communications, 2018, 39(11): 80-86.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Experiment Research on 600 Gbit/s Communication System

A Scheme of CAP-DPIM Hybrid Mudulation for VLC

Analysis of a faster-than-Nyquist signaling-based transmission scheme for optical communication systems

Research on intra-channel multiplexing schemes for Tbit/s optical transmission

Cross-layer design for combining adaptive modulation and coding with HARQ in LTE systems

Related Author

LIU Ting

FAN Qi

CAO Liang

WU Nan

WANG Xu-dong

XIN Jia-jun

Wang Yanyi

Chi Nan

Related Institution

Huaneng Longdong Energy Co., Ltd.

Xi'an Thermal Research Institute Co., Ltd.

Northwest Electric Power Design Institute

Information Science and Technology College, Dalian Maritime University

Department of Communication Science and Engineering,School of Information Science and Technology,Fudan University

Postal code：430205
Technical support is provided by Beijing Founder electronics co., LTD 鄂ICP备2022010197 鄂公网安备 42011202002092号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.
Total Visits：83846 Visits Today：64

⁰