On the impact of spatial correlation and precoder design on the performance of MIMO systems with space-time coding
2009 (English)In: 2009 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1- 8, PROCEEDINGS, IEEE , 2009, 2741-2744 p.Conference paper (Refereed)
The symbol error performance of spatially correlated multi-antenna systems is analyzed herein. When the transmitter only has statistical channel information, the use of space-time block codes still permits spatial multiplexing and mitigation of fading. The statistical information can be used for precoding to optimize some quality measure. Herein, we analyze the performance in terms of the symbol error rate (SER). It is shown analytically that spatial correlation at the receiver decreases the performance both without precoding and with an SER minimizing precoder. Without precoding, correlation should also be avoided at the transmitter side, but with an SER minimizing precoder the performance is actually improved by increasing spatial correlation at the transmitter. The structure of the optimized precoder is analyzed and the asymptotic properties at high and low SNRs are characterized and illustrated numerically.
Place, publisher, year, edition, pages
IEEE , 2009. 2741-2744 p.
, International Conference on Acoustics Speech and Signal Processing (ICASSP), ISSN 1520-6149
Linear Precoding, Majorization, MIMO Systems, Orthogonal Space-Time Block Codes, Symbol Error Rate
IdentifiersURN: urn:nbn:se:kth:diva-30714DOI: 10.1109/ICASSP.2009.4960190ISI: 000268919201225ScopusID: 2-s2.0-70349192793ISBN: 978-1-4244-2353-8OAI: oai:DiVA.org:kth-30714DiVA: diva2:402714
IEEE International Conference on Acoustics, Speech and Signal Processing, Taipei, TAIWAN, APR 19-24, 2009
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