NDLI: Symmetric Capacity of MIMO Downlink Channels

Content Provider	IEEE Xplore Digital Library
Author	Juyul Lee Jindal, N.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Minnesota Univ. (Juyul Lee; Jindal, N.)
Abstract	This paper studies the symmetric capacity of the MIMO downlink channel, which is defined to be the maximum rate that can be allocated to every receiver in the system. The symmetric capacity represents absolute fairness and is an important metric for slowly fading channels in which users have symmetric rate demands. An efficient and provably convergent algorithm for computing the symmetric capacity is proposed, and it is shown that a simple modification of the algorithm can be used to compute the minimum power required to meet given downlink rate demands. In addition, the difference between the symmetric and sum capacity, termed the fairness penalty, is studied. Exact analytical results for the fairness penalty at high SNR are provided for the 2 user downlink channel, and numerical results are given for channels with more users
Starting Page	1031
Ending Page	1035
File Size	218996
Page Count	5
File Format	PDF
ISBN	142440505X
DOI	10.1109/ISIT.2006.261884
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MIMO Downlink Mobile antennas Fading Broadcasting Throughput Receiving antennas Transmitting antennas Delay effects Processor scheduling
Content Type	Text
Resource Type	Article

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