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Antenna Selection and Power Control for Limited Feedback MIMO Systems with Successive Interference Cancellation

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3 Author(s)
Yellapantula, R. ; Dept. of Electr. & Comput. Eng., Illinois Univ., Chicago, IL ; Yao, Y. ; Ansari, R.

Antenna selection has been shown to be effective in improving the bit error rate (BER) performance of multiple-input-multiple-output (MIMO) systems. Performance can be further improved by transmitting only when channel gains are sufficiently high and by using power control to compensate for channel variations. Truncated channel inversion is an adaptive power control scheme that compensates for fading above a certain cutoff fade depth: below the cutoff level the transmission is stopped. In this paper, we propose a novel antenna selection scheme that incorporates the truncated channel inversion power control to improve the BER performance of spatial multiplexing (SM) systems with linear receivers. For systems transmitting at high data rates, further improvements are obtained by incorporating successive interference cancellation (SIC). Simulations show that, in flat Rayleigh fading channels, the proposed antenna selection scheme significantly outperforms well-known existing schemes, providing a gain of 3.75 dB and 6.25 dB over two such schemes at a BER of 10-5

Published in:

Military Communications Conference, 2006. MILCOM 2006. IEEE

Date of Conference:

23-25 Oct. 2006