Paper Info
Title
Relay Placement for FSO Multi-hop DF Systems With Link Obstacles and Infeasible Regions
Abstract
Optimal relay placement is studied for free-space optical multi-hop communication with link obstacles and infeasible regions. An optimal relay placement scheme is proposed to achieve the lowest outage probability, enable the links to bypass obstacles of various geometric shapes, and place the relay nodes in specified available regions. When the number of relay nodes is large, the searching space can grow exponentially, and thus a grouping optimization technique is proposed to reduce the searching time. We numerically demonstrate that the grouping optimization can provide suboptimal solutions close to the optimal solutions, but the average searching time grows linearly with the number of relay nodes. Two useful theorems are presented to reveal insights into the optimal relay locations. Simulation results show that our proposed optimization framework can effectively provide desirable solution to the problem of optimal relay nodes placement.
Year
DOI
Venue
2015
10.1109/TWC.2015.2434945
Wireless Communications, IEEE Transactions
Keywords
Field
DocType
Free-space optical communication,multi-hop relay,optimization,outage probability,relay placement
Relay channel,Mathematical optimization,Wireless,Fading,Geometric shape,Linear programming,Outage probability,Relay,Mathematics,Link Access Procedure for Frame Relay
Journal
Volume
Issue
ISSN
PP
99
1536-1276
Citations 
PageRank 
References 
8
0.62
10
Authors
4
Name
Order
Citations
PageRank
Bingcheng Zhu1206.95
Julian Cheng21409145.12
Alouini Mohamed-Slim3122611194.14
Lenan Wu470062.18