Paper Info
Title
On the outage and diversity-multiplexing tradeoff of broadcast channels with 1-bit feedback
Abstract
In this paper, a single antenna downlink channel with K users is analyzed in the presence of Rayleigh flat fading. A limited channel state information (CSI) feedback scheme is considered, where only 1-bit feedback per user is available at the base station for each fading block. We study the outage performance of such channels. The two cases of short-term and long-term average power constraints are analyzed. Closed-form expressions for the outage probability of the 1-bit feedback scheme are presented. At high SNR, the diversity-multiplexing tradeoff (DMT) is explicitly derived. We show that for the short-term average power constraint case, with only 1-bit feedback, the scheme achieves not only a DMT that increases linearly with the number of users in the system, but also the same tradeoff as if perfect CSI feedback were available at the base station. For longterm average power constraint, it is concluded that power allocation based on the feedback bit is crucial in further improving the DMT. An additional factor of two in the DMT is achieved compared with the short-term average power constraint case.
Year
DOI
Venue
2010
10.1109/ICASSP.2010.5496000
ICASSP
Keywords
Field
DocType
channel state information feedback,diversity reception,multiplexing,diversity-multiplexing tradeoff,single antenna downlink channel,closed form expression,limited feedback,diversity-multiplexing tradeoff.,wireless channels,multiuser diversity,outage probability,power allocation,rayleigh flat fading,diversity multiplexing tradeoff,broadcast channel outage,index terms— outage probability,rayleigh channels,probability,channel state information,base station,fading,ofdm modulation,signal to noise ratio,indexing terms,base stations,resource management,downlink,broadcasting
Base station,Mathematical optimization,Fading,Computer science,Control theory,Signal-to-noise ratio,Closed-form expression,Computer network,Communication channel,Multiplexing,Channel state information,Telecommunications link
Conference
ISSN
ISBN
Citations 
1520-6149 E-ISBN : 978-1-4244-4296-6
978-1-4244-4296-6
1
PageRank 
References 
Authors
0.37
8
2
Name
Order
Citations
PageRank
Bo Niu1293.52
Alexander M. Haimovich261869.28