Abstract
In this paper, we investigate the asymptotic performance of per-tone, bulk, and joint bulk/per-tone transmit antenna selections in orthogonal frequency-division multiplexing systems employing orthogonal space-time block coding (OSTBC). In particular, we show that the diversity and coding gains of all three systems are identical. This is a remarkable result since it demonstrates that systems with M transmit antennas operating in the high signal-to-noise ratio regime can achieve optimal performance while only employing enough radio frequency circuitry to convey OSTBC over L < M antennas on all subcarriers, thus offering significant savings over conventional approaches.
Original language | English |
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Pages (from-to) | 2824-2828 |
Number of pages | 5 |
Journal | IEEE Transactions on Vehicular Technology |
Volume | 60 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jul 2011 |