Title :
Power and Spectral Efficient Free Space Optical Link Based on MIMO System
Author :
Sandhu, Harinder ; Chadha, D.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Delhi, New Delhi
Abstract :
In this paper, we describe a terrestrial, line-of-sight free space optical (FSO) communication link using non- repetitive MIMO scheme with power efficient pulse position modulated (PPM) signal over highly scattering propagation medium described by Gamma-Gamma PDF channel. Due to its underlying low complexity, VBLAST- ZF (Vertical Bell Labs Layered Space Time - Zero Forcing) detection mechanism is exploited at the receiver side to increase overall spectral efficiency and channel capacity. Burst mode communication is assumed as the channel variations are considered to be constant within a block period and vary from block to block. Overall performance comparison under different turbulence conditions is obtained in terms of symbol error in a simulated random gamma-gamma PDF propagation environment. No coding has been included in the present work.
Keywords :
MIMO communication; optical links; pulse position modulation; MIMO system; burst mode communication; free space optical link; power efficient pulse position modulated signal; MIMO; Optical fiber communication; Optical modulation; Optical receivers; Optical refraction; Optical scattering; Optical transmitters; Optical variables control; Pulse modulation; Space technology; Diversity; Fading Channels; Optical MIMO Systems; Pulse Position Modulation; Spatial Multiplexing; VBLAST;
Conference_Titel :
Communication Networks and Services Research Conference, 2008. CNSR 2008. 6th Annual
Conference_Location :
Halifax, NS
Print_ISBN :
978-0-7695-3135-9
DOI :
10.1109/CNSR.2008.44
