Adaptive modulation and joint temporal spatial power allocation for oSTBC mIMO systems with pmperfect CSI
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Article number | 6199936 |
Pages (from-to) | 1914-1924 |
Journal / Publication | IEEE Transactions on Communications |
Volume | 60 |
Issue number | 7 |
Publication status | Published - Jul 2012 |
Link(s)
Abstract
We propose a novel adaptive transmission scheme for space-time coded multiple-input multiple-output beamforming systems with imperfect channel state information at the transmitter, of which the signal constellation, total transmit power (temporal power), and power allocation among eigen-beams (spatial power) are jointly adapted to maximize the average spectral efficiency, subject to a target bit-error-rate and an average power constraint. The power allocation over the spatial and temporal domains makes the traditional approach of partitioning the received signal-to-noise ratio (SNR) inapplicable to the above design problem. By introducing a new variable, called as effective signal-to-noise-to-modulation ratio (ESNMR), we derive a rate-selection policy by partitioning the range of the ESNMR with an optimal set of thresholds. A closed-form temporal power control policy and a simple spatial power allocation algorithm are also obtained. Numerical results demonstrate that the new adaptive transmission scheme yields a significant performance gain over existing adaptation systems. © 1972-2012 IEEE.
Research Area(s)
- Adaptive modulation, beamforming, imperfect CSI, multiple-input multiple-output (MIMO), orthogonal space-time block coding (OSTBC), power allocation
Citation Format(s)
Adaptive modulation and joint temporal spatial power allocation for oSTBC mIMO systems with pmperfect CSI. / Kuang, Quan; Leung, Shu-Hung; Yu, Xiangbin.
In: IEEE Transactions on Communications, Vol. 60, No. 7, 6199936, 07.2012, p. 1914-1924.
In: IEEE Transactions on Communications, Vol. 60, No. 7, 6199936, 07.2012, p. 1914-1924.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review