Performance analysis of OFDM based FSO communication system with TCM codes

被引：2

作者：

Gupta, Ritu ^{[1
]}

Kamal, Tara Singh ^{[2
]}

机构：

[1] IKGPTU, ECE, Jalandhar 144604, Punjab, India

[2] IEEE Life, ECE, San Diego, CA USA

来源：

OPTIK | 2021年 / 248卷

关键词：

Atmospheric turbulence channel; Free-space optical communication; Trellis coded modulation; Performance analysis; OPTICAL WIRELESS LINKS; DIVERSITY;

D O I：

10.1016/j.ijleo.2021.168141

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Various channel coding schemes have been used over free space optical (F SO) links to alleviate the effects of turbulence induced fading. In this paper, performance analysis for TCM coded orthogonal frequency division multiplexing (OFDM) based FSO communication systems, operating over atmospheric turbulence channels. Analysis have been done in terms of bit error rate (BER) as a function of signal to noise ratio (SNR), considering the log-normal distribution model during weak turbulence and gamma-gamma distribution model for moderate and strong turbulence conditions. The integration of TCM with OFDM can solve bandwidth issue and bit rate degradation during wireless communication. Various modulation schemes have been studied for the said system keeping in mind different requirements such as band width and data rate etc. The simulation results and analysis have shown that the TCM coder with 16-QAM provides considerable coding gain as compared to uncoded system during all turbulence conditions. This system acts as high-performance wireless communication system (HPWCS) by providing BER of 10(-9) which is necessary for stable operation on communication system.

引用

页数：7

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