Asymptotic analysis in MIMO MRT/MRC systems

Authors:
Quan Zhou;Huaiyu Dai
Affiliations:
Department of Electrical and Computer Engineering, NC State University, Raleigh, NC;Department of Electrical and Computer Engineering, NC State University, Raleigh, NC
Venue:
EURASIP Journal on Wireless Communications and Networking
Year:
2006

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Abstract

Through the analysis of the probability density function of the largest squared singular value of a complex Gaussian matrix at the origin and tail, we obtain two asymptotic results related to the multi-input multi-output (MIMO) maximum-ratio-transmission/maximum-ratio-combining (MRT/MRC) systems. One is the asymptotic error performance (in terms of SNR) in a single-user system, and the other is the asymptotic system capacity (in terms of the number of users) in the multiuser scenario when multiuser diversity is exploited. Similar results are also obtained for two other MIMO diversity schemes, space-time block coding and selection combining. Our results reveal a simple connection with system parameters, providing good insights for the design of MIMO diversity systems.