Paper Info
Title
Improved Buffer-Aided Selective Relaying for Free Space Optical Cooperative Communications
Abstract
This paper tackles the performance analysis and relaying strategies for two-relays buffer-aided (BA) parallel relaying cooperative free space optical (FSO) networks. We first provide an asymptotic analysis of the existing selective relaying scheme that simultaneously activates the strongest source-relay (S-R) and relay-destination (R-D) optical links. We then propose an improvement of this scheme and highlight on its advantages by deriving closed-form accurate expressions for the asymptotic values of the outage probability (OP) and average packet delay (APD). The theoretical evaluation and numerical analysis demonstrate the capability of the improved scheme in enhancing the diversity order with finite buffer sizes unlike the selective relaying scheme that achieves diversity gains only with infinite-size buffers entailing infinite delays. The OP performance is significantly enhanced for all network topologies whether the relays are closer to S, closer to D or placed at the same distance from S and D. On the other hand, the reaped APD gains depend on the positions of the relays.
Year
DOI
Venue
2022
10.1109/TWC.2022.3152852
IEEE Transactions on Wireless Communications
Keywords
DocType
Volume
Free-space optics,FSO,relaying,Markov chain,outage probability,queuing delay,asymptotic analysis,cooperative networks
Journal
21
Issue
ISSN
Citations 
9
1536-1276
0
PageRank 
References 
Authors
0.34
24
1
Name
Order
Citations
PageRank
Chadi Abou-Rjeily116127.02