Title :
Capacity Analysis for Transmit Antenna Selection Using Orthogonal Space-Time Block Codes
Author :
Phan, Khoa T. ; Tellambura, Chintha
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta.
fDate :
5/1/2007 12:00:00 AM
Abstract :
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
Keywords :
MIMO communication; Rayleigh channels; antenna arrays; block codes; channel capacity; diversity reception; orthogonal codes; space-time codes; transmitting antennas; MIMO channel; OSTBC; TAS; closed-form capacity expression; frequency-flat Rayleigh fading; full diversity; multiple-input multiple-output system; orthogonal space-time block codes; signal transmission; transmit antenna selection; Block codes; Costs; MIMO; Maximum likelihood detection; Radio frequency; Radio transmitters; Rayleigh channels; Receiving antennas; Space time codes; Transmitting antennas;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2007.070062
