Performance of M-ary quadrature amplitude modulation -based orthogonal frequency division multiplexing for free space optical transmission

被引：8

作者：

Jaiswal, Ishu ^{[1
]}

Sangeetha, R. G. ^{[1
]}

Suchetha, M. ^{[1
]}

机构：

[1] VIT Univ, Dept SENSE, Commun Engn, Chennai Campus, Madras, Tamil Nadu, India

来源：

IET OPTOELECTRONICS | 2016年 / 10卷 / 04期

关键词：

quadrature amplitude modulation; OFDM modulation; free-space optical communication; telecommunication channels; error statistics; M-ary quadrature amplitude modulation; orthogonal frequency division multiplexing; free space optical transmission; FSO transmission link; QAM; atmospheric attenuation; channel distribution; gamma-gamma model; probability density function; cumulative density function; Meijer's G-function; bit error rate; outage probability; Opti-system; MATLAB; COMMUNICATION-SYSTEMS; GAMMA-GAMMA; OFDM; CAPACITY; LINKS;

D O I：

10.1049/iet-opt.2015.0091

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this study, the authors analyse the performance of the free space optical (FSO) transmission link using orthogonal frequency division multiplexing (OFDM) modulation with M-ary quadrature amplitude modulation (QAM) encoder. For strong and weak atmospheric attenuation, the analysis of channel distribution in FSO is carried out using gamma-gamma model. In this analysis, the expressions for probability density function and cumulative density function of OFDM-based FSO channel have been derived in terms of Meijer's G-function. Also, the bit error rate and outage probability of M-ary QAM-based OFDM for an FSO transmission link has been derived. The feasibility of the system and the derived expressions are verified using Opti-system and MATLAB. From the analysis, it is observed that the performance of OFDM using M-ary QAM modulation is feasible for 7000 m, owning to its simplicity and good performance.

引用

页码：156 / 162

页数：7

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