DocumentCode :
650382
Title :
Ergodic capacity of coherent optical wireless communications in Gamma-Gamma turbulence
Author :
Hassan, M.Z. ; Hossain, Md Jahangir ; Cheng, James
Author_Institution :
Sch. of Eng., Univ. of British Columbia, Kelowna, BC, Canada
fYear :
2013
fDate :
16-18 May 2013
Firstpage :
634
Lastpage :
639
Abstract :
Ergodic capacity is investigated for the optical wireless communications employing coherent detection over the Gamma-Gamma turbulence channels. We consider three different adaptive transmission schemes: (i) variable-power and variable-rate adaptive transmission, (ii) channel inversion with fixed rate, and (iii) truncated channel inversion with fixed rate. Highly accurate series approximations are derived for the ergodic capacity of the coherent optical wireless communications using a series expansion of the modified Bessel function. In addition, we present the asymptotic high signal-to-noise ratio channel capacity expression for the variable-power and variable-rate adaptive transmission scheme. Numerical results confirm high accuracy of our series ergodic capacity expressions in different turbulence regimes.
Keywords :
Bessel functions; approximation theory; optical communication; telecommunication channels; asymptotic high signal-to-noise ratio channel capacity expression; channel inversion; coherent detection; coherent optical wireless communications; ergodic capacity; gamma-gamma turbulence channels; modified Bessel function; series approximations; series expansion; truncated channel inversion; turbulence regimes; variable-power adaptive transmission; variable-power adaptive transmission scheme; variable-rate adaptive transmission; variable-rate adaptive transmission scheme;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless and Optical Communication Conference (WOCC), 2013 22nd
Conference_Location :
Chongqing
Print_ISBN :
978-1-4673-5697-8
Type :
conf
DOI :
10.1109/WOCC.2013.6676452
Filename :
6676452
Link To Document :
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