Paper Info
Title
Rate and power allocation for discrete-rate link adaptation
Abstract
Link adaptation, in particular adaptive coded modulation (ACM), is a promising tool for bandwidth-efficient transmission in a fading environment. The main motivation behind employing ACM schemes is to improve the spectral efficiency of wireless communication systems. In this paper, using a finite number of capacity achieving component codes, we propose new transmission schemes employing constant power transmission, as well as discrete- and continuous-power adaptation, for slowly varying flat-fading channels. We show that the proposed transmission schemes can achieve throughputs close to the Shannon limits of flat-fading channels using only a small number of codes. Specifically, using a fully discrete scheme with just four codes, each associated with four power levels, we achieve a spectral efficiency within 1 dB of the continuous-rate continuous-power Shannon capacity. Furthermore, when restricted to a fixed number of codes, the introduction of power adaptation has significant gains with respect to average spectral efficiency and probability of no transmission compared to a constant power scheme.
Year
DOI
Venue
2008
10.1155/2008/394124
Eurasip Journal on Wireless Communications and Networking
Keywords
DocType
Volume
average spectral efficiency,bandwidth-efficient transmission,new transmission scheme,constant power transmission,power level,proposed transmission scheme,spectral efficiency,discrete-rate link adaptation,power adaptation,power allocation,flat-fading channel,constant power scheme,information theory,link adaptation,power transmission,shannon capacity,fading channel,adaptive coding
Journal
2008,
Issue
ISSN
Citations 
1
1687-1499
6
PageRank 
References 
Authors
0.61
18
8
Name
Order
Citations
PageRank
Anders Gjendemsjø121116.83
Geir E. Øien238143.38
Henrik Holm3282.28
Alouini Mohamed-Slim4122611194.14
David Gesbert52996218.36
Kjell J. Hole612014.92
Pål Orten78510.77
AlouiniMohamed-Slim825826.87