Re-configurability to channel state information reliability in space-time block coded systems
Re-configurability to channel state information reliability in space-time block coded systems
- Author(s): A. Alexiou
- DOI: 10.1049/cp:20040655
For access to this article, please select a purchase option:
Buy conference paper PDF
Buy Knowledge Pack
IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.
Fifth IEE International Conference on 3G Mobile Communication Technologies (3G 2004) The Premier Technical Conference for 3G and Beyond — Recommend this title to your library
Thank you
Your recommendation has been sent to your librarian.
- Author(s): A. Alexiou Source: Fifth IEE International Conference on 3G Mobile Communication Technologies (3G 2004) The Premier Technical Conference for 3G and Beyond, 2004 p. 158 – 162
- Conference: Fifth IEE International Conference on 3G Mobile Communication Technologies (3G 2004) The Premier Technical Conference for 3G and Beyond
- DOI: 10.1049/cp:20040655
- ISBN: 0 86341 388 9
- Location: London, UK
- Conference date: 18-20 Oct. 2004
- Format: PDF
While knowledge of the channel at the transmitter can provide significant performance enhancements for wireless communications, the generation of reliable channel feedback is complicated by the rapid time variations of the channel for mobile applications. In this paper an optimal transmitter strategy, and the resulting gains are presented for multiple input multiple output (MIMO) transceivers employing space-time block coding and imperfect channel feedback. The proposed scheme exploits the knowledge on the channel state information (CSI) reliability at the transmitter for the design of a linear precoder that is based on the minimisation of the symbol error rate (union bound). For low CSI reliability values (close to zero) the proposed technique is equivalent to space-time block coding, whereas for high CSI reliability values (close to one) it is proved to be equivalent to beamforming. For intermediate CSI reliability values the proposed scheme outperforms both conventional approaches and achieves robustness against CSI reliability. The performance enhancements achieved by the proposed reconfigurable scheme are illustrated via simulations.
Inspec keywords: array signal processing; radio transmitters; MIMO systems; error statistics; block codes; space-time codes; 3G mobile communication; channel estimation; transceivers
Subjects: Codes; Signal processing and detection; Mobile radio systems; Communication channel equalisation and identification
Related content
content/conferences/10.1049/cp_20040655
pub_keyword,iet_inspecKeyword,pub_concept
6
6