Title :
Multiple user pair scheduling in TWR-FSO systems in presence of building sway
Author :
Puri, P. ; Garg, Parul ; Aggarwal, M. ; Sharma, Praveen Kumar
Author_Institution :
Div. of Electron. & Commun. Eng., Netaji Subhas Inst. of Technol., New Delhi, India
Abstract :
This paper investigates a two-way relay (TWR) assisted free space optical (FSO) communication system with multiple user pairs sharing a single relay via scheduling. A two-way, half-duplex, network-coded relay is considered which serves multiple user pairs over an optical channel characterized by path loss, atmospheric turbulence, and pointing errors (building sway). In addition, the relay employs a scheduler based on absolute signal-to-noise ratio (SNR) and normalized SNR based scheduling schemes. Novel closed form expressions for outage probability for both the scheduling schemes are derived and numerically analyzed for the considered system and channel models.
Keywords :
optical fibre networks; relay networks (telecommunication); scheduling; FSO communication system; SNR; TWR-FSO systems; atmospheric turbulence; building sway; free space optical communication system; multiple user pair scheduling; network coded relay; optical channel; outage probability; signal-to-noise ratio; two way relay; Adaptive optics; Buildings; Closed-form solutions; Fading; Optical fiber communication; Relays; Signal to noise ratio; Free space optical systems; multiuser scheduling; multiuser two-way relay; selection diversity;
Conference_Titel :
Signal Processing and Communications (SPCOM), 2014 International Conference on
Conference_Location :
Bangalore
Print_ISBN :
978-1-4799-4666-2
DOI :
10.1109/SPCOM.2014.6983920
