Ground-to-Satellite Optical Communication Link Performance with Spatial Diversity in Weak Atmospheric Turbulence

被引：17

作者：

Kaushal, Hemani ^{[1
]}

Jain, V. K.

Kar, Subrat ^{[1
,2
,3
]}

机构：

[1] Indian Inst Technol Delhi, Dept Elect Engn, New Delhi 110016, India

[2] Indian Inst Technol, Bharti Sch Telecommun Technol & Management, Delhi, India

[3] Indian Inst Technol Delhi, AICET, Delhi, India

来源：

FIBER AND INTEGRATED OPTICS | 2010年 / 29卷 / 04期

关键词：

fading channel; free-space optical communication; spatial diversity; turbulence; SCINTILLATION; STATISTICS; SYSTEMS;

D O I：

10.1080/01468030.2010.491893

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this article, performance improvement of a free-space optical communication link with spatial diversity is evaluated for coherent (sub-carrier BPSK and sub-carrier QPSK) and non-coherent (OOK and Q-PPM) modulation schemes in an atmospheric turbulence fading channel. Based on Kolmogorov's theory, the link performance characterized by the signal-to-noise ratio or bit error rate is evaluated for both modulation schemes. It is observed that there is performance improvement with the increase in the order of transmit diversity for all the modulation schemes. Sub-carrier BPSK modulation outperforms the other modulation schemes in terms of the minimum signal-to-noise ratio requirement for a given bit error rate. Also, the effect of correlation among different transmitting antenna beams on the link performance is analyzed.

引用

页码：315 / 340

页数：26

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