DocumentCode
811516
Title
On the optimality of the OFDMA network
Author
Li, Guoqing ; Liu, Hui
Author_Institution
Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA
Volume
9
Issue
5
fYear
2005
fDate
5/1/2005 12:00:00 AM
Firstpage
438
Lastpage
440
Abstract
This letter studies the optimality of the OFDMA network. It is proved that in the multiuser multicarrier downlink system with independent decoding, OFDMA is the optimal multiple access scheme. It is also shown that the optimality of OFDMA holds for any adaptive modulation scheme whose rate-SNR/SINR function can be approximated as a convex function.
Keywords
adaptive modulation; convex programming; decoding; frequency division multiple access; radio links; OFDMA network; adaptive modulation scheme; convex function; decoding; multiple access scheme; multiuser multicarrier downlink system; optimization; orthogonal frequency division multiple access; AWGN; Decoding; Downlink; Frequency conversion; Frequency diversity; OFDM modulation; Quadrature amplitude modulation; Signal to noise ratio; Transmitters; Wireless networks;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2005.1431164
Filename
1431164
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