Paper Info
Title
Partial Channel Feedback Schemes Maximizing Overall Efficiency in Wireless Networks
Abstract
Opportunistic scheduling provides a good chance to improve wireless system performance by exploiting the underlying channel condition. There has been a lot of work on opportunistic scheduling, but the problem of finding the right feedback mechanism to convey channel information has largely been untouched. In emerging multichannel systems, the per- channel feedback induces a substantial amount of feedback overhead and requires high computational complexity. To reduce the feedback overhead, we consider an opportunistic feedback strategy that activates the channel feedback opportunistically according to the channel condition. Then, we combine the opportunistic feedback with the best-n channel feedback scheme where a mobile user chooses the best n channels and transfers this information to the base station. We analyze the throughput and the amount of channel feedback information for proportionally fair opportunistic scheduling under Rayleigh fading i.i.d. channels. The numerical results confirm that our partial feedback schemes achieve a remarkable reduction in the amount of feedback information at the cost of slight throughput degradation, thereby saving the scarce wireless uplink bandwidth and limited battery power.
Year
DOI
Venue
2008
10.1109/TWC.2008.060863
IEEE Transactions on Wireless Communications
Keywords
Field
DocType
base station,opportunistic feedback,channel feedback,feedback information,partial channel feedback schemes,right feedback mechanism,channel feedback opportunistically,opportunistic feedback strategy,rayleigh fading channels,wireless networks,computational complexity,3g mobile communication,partial feedback scheme,index terms— wireless networks,selective channel feedback,channel feedback information,maximizing overall efficiency,channel information,best-n channel feedback scheme,feedback overhead,rayleigh channels,opportunistic scheduling.,partial channel information,system performance,rayleigh fading,base stations,wireless network,feedback,signal to noise ratio,throughput,indexing terms,spread spectrum communication,wireless communication,fading,scheduling,information analysis,interference,feedback mechanism
Wireless network,Base station,Scheduling (computing),Fading,Computer network,Communication channel,Throughput,Proportionally fair,Mathematics,Telecommunications link
Journal
Volume
Issue
ISSN
7
4
1536-1276
Citations 
PageRank 
References 
33
1.59
10
Authors
2
Name
Order
Citations
PageRank
Young-June Choi131132.48
Saewoong Bahk21024112.58