Title :
A novel MGF-based approach to analyze SIM-based relayed FSO systems
Author :
Aggarwal, M. ; Garg, Parul ; Puri, P.
Author_Institution :
Div. of Electron. & Commun. Eng., Netaji Subhas Inst. of Technol., New Delhi, India
Abstract :
In this paper, we analyze a subcarrier intensity modulation (SIM) based relayed free space optical (FSO) system assuming independent but not necessarily identically distributed (i.n.i.d) Gamma-Gamma turbulence channels. System employs a channel-state-information-assisted (CSI-assisted) amplify and forward (AF) relay. We derive the moment generating function (MGF) of the end-to-end signal to noise ratio (SNR) of the system and using the novel MGF, accurate closed-form expressions for capacity under different adaptive transmission schemes such as optimal rate adaptation (ORA) and channel inversion with fixed rate (CIFR) are derived. Further, we derive closed form expression for average symbol error rate (SER) of M-ary phase shift keying (MPSK) modulation schemes in terms of Meijer´s G-function.
Keywords :
amplify and forward communication; error statistics; optical communication; phase shift keying; telecommunication channels; G-function; Gamma-Gamma turbulence channels; M-ary phase shift keying; MGF-based approach; MPSK; Meijer G-function; SER; SIM-based relayed FSO systems; amplify and forward relay; channel inversion with fixed rate; channel-state-information-assisted; end-to-end signal to noise ratio; free space optical system; moment generating function; optimal rate adaptation; subcarrier intensity modulation; symbol error rate; Adaptive optics; Channel capacity; Closed-form solutions; Fading; Modulation; Relays; Signal to noise ratio; Amplify and forward relay; average symbol error rate (SER); ergodic capacity; moment generating function;
Conference_Titel :
Advances in Computing, Communications and Informatics (ICACCI, 2014 International Conference on
Conference_Location :
New Delhi
Print_ISBN :
978-1-4799-3078-4
DOI :
10.1109/ICACCI.2014.6968279
