BER minimized power allocation for quasi-orthogonal space-time block coded signals with QR-based successive detection

Jwo-Yuh Wu*, Sheng Po Fan, Jie Gang Kuang, Ta-Sung Lee

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose a minimal BER power allocation scheme for a class of quasi-orthogonal space-time block coded transmission (the so-called ABBA system) over i.i.d. Rayleigh fading channels under the QR-based successive detection framework. Instead of relying on BER under a fixed channel realization, the design criterion we adopt is the overall mean BER averaged with respect to the channel distribution. By exploiting a distinctive channel matrix structure induced by the ABBA code we derive a closed-form upper bound of the considered BER metric and, through minimization of which, an optimal power allocation scheme is obtained. Numerical simulation shows that the resultant performance is almost identical to that of the joint maximum-likelihood decoding in the medium-to-high SNR regime.

Original languageEnglish
Title of host publication2007 6th International Conference on Information, Communications and Signal Processing, ICICS
DOIs
StatePublished - 1 Dec 2007
Event2007 6th International Conference on Information, Communications and Signal Processing, ICICS - Singapore, Singapore
Duration: 10 Dec 200713 Dec 2007

Publication series

Name2007 6th International Conference on Information, Communications and Signal Processing, ICICS

Conference

Conference2007 6th International Conference on Information, Communications and Signal Processing, ICICS
CountrySingapore
CitySingapore
Period10/12/0713/12/07

Keywords

  • Bit error rate
  • Power allocation
  • QR decomposition
  • Quasi-orthogonal space-time block code
  • Successive detection

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    Wu, J-Y., Fan, S. P., Kuang, J. G., & Lee, T-S. (2007). BER minimized power allocation for quasi-orthogonal space-time block coded signals with QR-based successive detection. In 2007 6th International Conference on Information, Communications and Signal Processing, ICICS [4449749] (2007 6th International Conference on Information, Communications and Signal Processing, ICICS). https://doi.org/10.1109/ICICS.2007.4449749