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Capacity Analysis for Transmit Antenna Selection Using Orthogonal Space-Time Block Codes

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2 Author(s)
Phan, K.T. ; Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta. ; Tellambura, C.

Antenna selection for multiple-input multiple-output (MIMO) where only a subset of antennas at the transmitter and/or receiver are activated for signal transmission is a practical technique for the realization of full diversity. Despite extensive research, closed-form capacity expressions for MIMO systems employing transmit antenna selection (TAS) and orthogonal space-time block codes (OSTBCs) are not available. We thus derive the exact closed-form capacity expressions when an OSTBC is employed and N transmit antennas out of total Lt antennas are selected for transmission. The expressions are valid for a frequency-flat Rayleigh fading MIMO channel and avoid numerical integration methods

Published in:

Communications Letters, IEEE  (Volume:11 ,  Issue: 5 )

Date of Publication:

May 2007

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