Power control for space-time-coded mimo systems with imperfect feedback over joint transmit-receive-correlated channel

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

5 Scopus Citations
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Author(s)

  • Xiang-bin Yu
  • Binbin Wu
  • Yun Rui
  • Da-zhuan Xu
  • Quan Kuang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number6824264
Pages (from-to)2489 - 2501
Journal / PublicationIEEE Transactions on Vehicular Technology
Volume64
Issue number6
Publication statusPublished - 1 Jun 2015

Abstract

In this paper, power adaptation strategies for minimizing bit error rate (BER) subject to an average power constraint for orthogonal space-time-coded multiple-input-multiple-output (MIMO) systems with mean and covariance feedback over joint transmit-receive-correlated channels are presented. We first develop an optimal spatial-only power control (PC) based on an approximated BER bound, which can include the mean feedback only and covariance feedback only as special cases. Using a newly defined fuzzy signal-to-noise ratio (FSNR) criterion, a suboptimal spatial PC scheme with a closed-form expression is derived. This FSNR-based power adaptation not only has less computational complexity but has a BER performance close to that of the optimal spatial-only PC scheme as well. Second, the degrees of freedom in temporal and spatial domains are exploited to derive a joint spatiotemporal PC (S-T-PC) with the use of the FSNR strategy to minimize the average BER subject to a long-term average power constraint with mean and covariance feedback. Simulation results show that the proposed two spatial-only PC schemes can provide a BER lower than that of equal power allocation and have almost the same performance as the existing spatial-only optimal scheme but with lower computational complexity. Moreover, they outperform the PC schemes with mean or covariance feedback only. Most importantly, the new joint S-T-PC scheme substantially outperforms all the spatial-only PC schemes.

Research Area(s)

  • Space-time coding, Spatial-temporal power control, Mean feedback, Covariance feedback, Spatial correlation, MIMO

Citation Format(s)

Power control for space-time-coded mimo systems with imperfect feedback over joint transmit-receive-correlated channel. / Yu, Xiang-bin; LEUNG, Shu Hung; Wu, Binbin; Rui, Yun; Xu, Da-zhuan; Kuang, Quan.

In: IEEE Transactions on Vehicular Technology, Vol. 64, No. 6, 6824264, 01.06.2015, p. 2489 - 2501.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review