Paper Info
Title
On relay assignment strategy in wireless cellular environment
Abstract
Relay assignment means assigning the proper relay nodes (RN) to cell-edge users (UE) in order to exploit the spatial diversity through relay nodes and improve cell-edge performance. An optimal algorithm, called ORA, is to maximize the minimum data rate among all users. ORA is shown to find the optimal objective regardless the initial relay node. Although the algorithm is shown to converge (the minimum data rate is maximized), there exist several different RN-to-UE assignment pairs for the remaining UEs assigned to RNs. This paper is motivated to enhance the performance of the relay assignment for the remaining UEs, provided that the minimum data rate is maximized. In this paper, we propose a new strategy whose main objective is to maximize the relative performance improvement, which is a ratio of the performance improvement to original direct transmission, under the max-min constraint. Under the new assignment algorithm, not only the original optimal property of ORA is preserved, but also the performance of remaining UEs assigned to RNs is maximized. Simulation results demonstrate the effectiveness of the proposed approach.
Year
DOI
Venue
2014
10.1109/ICCNC.2014.6785421
ICNC
Keywords
Field
DocType
relay networks (telecommunication),cooperative communication,spatial diversity,diversity reception,relay assignment strategy,cellular radio,cell-edge performance,relay assignment,relative performance improvement,wireless cellular environment,ora,minimax techniques,relay nodes,cell-edge users,lte-advanced,max-min constraint,long term evolution,relative improvement,optimal algorithm,assignment pairs
Relay channel,Antenna diversity,Cellular radio,Wireless,Computer network,Exploit,Data rate,Engineering,Relay,Performance improvement
Conference
ISSN
Citations 
PageRank 
2325-2626
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Chun-Lin Wu100.34
T. Lin272467.09
Hsiun-Fu Liu300.34
Zanyu Chen400.34