Normalized Capacity of Free Space Optical Link in Malaga Channel with Pointing Error using Power and Rate Adaptation Technique

摘要

In this paper, we present normalized channel capacity of Free Space Optical (FSO) communication link, which is obtained by using power and rate adaptation technique. The presented results for capacity are obtained over the channel disturbed by Malaga turbulence (for integer values of parameter β) with pointing error. Impact of arbitrary selected cut-off signal-to-noise (SNR) level on average power is considered. Also, impacts of average power and arbitrary selected cut-off SNR level on channel capacity are considered. Analytical closed form expression for average power versus arbitrary selected cut-off SNR level for different values of received SNR is given. Expression for normalized channel capacity which is obtained by using power and rate adaptation technique is given. Numerical calculations are carried on and results are graphically presented for different values of arbitrary selected cut-off SNR level.