Title :
Effect of pointing error on cooperative free space optical communication systems under different channel conditions
Author :
Dubey, Vineeta ; Chadha, D. ; Chandra, Vinod
Author_Institution :
Bharti Sch. of Telecommun. Technol. & Manage., IIT Delhi, New Delhi, India
Abstract :
We have investigated the performance improvement of cooperative free space optical (FSO) communication over single input single output (SISO) system in this paper. Bit error rate (BER) analysis for gamma-gamma channel model, pointing error and additive white Gaussian noise (AWGN) has been demonstrated for SISO and cooperative system, as well as, where the performance improvement with different combining techniques in cooperative system has been discussed in this paper. Significant performance improvement is achieved in case of cooperative communication with the use of Maximal Ratio combining as compared to Equal Gain combining and Selection combining diversity combining techniques as reported in literature where pointing error deteriorates the system performance. Different channel environments, where direct and indirect links are facing different turbulence, are also analyzed in this paper.
Keywords :
AWGN channels; cooperative communication; diversity reception; error statistics; optical communication; wireless channels; AWGN; BER; FSO; SISO system; additive white Gaussian noise; bit error rate; cooperative free space; equal gain combining; maximal ratio combining; optical communication systems; pointing error effect; selection combining diversity combining techniques; single input single output system; Adaptive optics; Bit error rate; Channel models; Cooperative communication; Diversity reception; Optical fiber communication; Relays; Asymmetrical channel environment; Cooperative communication; FSO; SISO; Symmetrical channel environment;
Conference_Titel :
Advanced Networks and Telecommuncations Systems (ANTS), 2014 IEEE International Conference on
Print_ISBN :
978-1-4799-5867-2
DOI :
10.1109/ANTS.2014.7057224
