DocumentCode
1527365
Title
Average BER Analysis of Differential Modulation in DF Cooperative Communication System over Gamma-Gamma Fading FSO Links
Author
Bhatnagar, Manav R.
Author_Institution
Department of Electrical Engineering, Indian Institute of Technology Delhi, Hauz Khas, IN-110016 New Delhi, India
Volume
16
Issue
8
fYear
2012
fDate
8/1/2012 12:00:00 AM
Firstpage
1228
Lastpage
1231
Abstract
In this letter, we study differential modulation for decode-and-forward (DF) based free space optical (FSO) cooperative communication system over Gamma-Gamma fading channels. We derive exact bit error rate (BER) of the differential DF FSO system in terms of power series. The diversity order and coding gain of the differentially modulated DF FSO system are analytically obtained. It is demonstrated by analysis and simulation that the differential DF FSO system is able to achieve significant performance gain over a non-cooperative direct transmission based differential FSO system.
Keywords
Bit error rate; Encoding; Modulation; Optical fiber communication; Optical transmitters; Relays; Signal to noise ratio; Decode-and-forward protocol; Gamma-Gamma fading; differential modulation; free space optical links;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2012.052112.120670
Filename
6208782
Link To Document