Low SNR Capacity of FSO Links over Gamma-Gamma Atmospheric Turbulence Channels

Files
gammagammaCase_long.pdf (139 KB)

Type
Technical Report

Authors
Benkhelifa, Fatma
Alouini, Mohamed-Slim
Rezki, Zouheir

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Communication Theory Lab

Date
2013-02-23

Abstract
In this paper, we study the ergodic capacity of free space optical communication systems over Gamma-Gamma atmospheric turbulence fading channels with perfect channel state information at both the transmitter and the receiver. In our framework, we mainly focus on the low signal-to-noise ratio range and show that the ergodic capacity scales proportionally to SNR log^4(1/SNR). We show also that one-bit CSI feedback at the transmitter is enough to achieve this capacity using an on-off power control scheme.

Permanent link to this record
http://hdl.handle.net/10754/270292
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Communication Theory Lab
Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
Technical Reports