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Systematic Construction of Linear Transform based Full Divversity, Rate One Space-Time-Frequency Codes
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
Department of Electrical Communication Engineering, Indian Institute of Science , Bangalore 560012, India .
2009 (English)In: IEEE Transactions on Signal Processing, ISSN 1053-587X, Vol. 57, no 6, 2285-2298 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, we generalize the existing rate-one space frequency (SF) and space-time frequency (STF) code constructions. The objective of this exercise is to provide a systematic design of full-diversity STF codes with high coding gain. Under this generalization, STF codes are formulated as linear transformations of data. Conditions on these linear transforms are then derived so that the resulting STF codes achieve full diversity and high coding gain with a moderate decoding complexity. Many of these conditions involve channel parameters like delay profile (DP) and temporal correlation. When these quantities are not available at the transmitter, design of codes that exploit full diversity on channels with arbitrary DP and temporal correlation is considered. Complete characterization of a class of such robust codes is provided and their bit error rate (BER) performance is evaluated. On the other hand, when channel DP and temporal correlation are available at the transmitter, linear transforms are optimized to maximize the coding gain of full-diversity STF codes. BER performance of such optimized codes is shown to be better than those of existing codes.

Place, publisher, year, edition, pages
IEEE Signal Processing Society, 2009. Vol. 57, no 6, 2285-2298 p.
Keyword [en]
Channel delay profile, coding gain, diversity gain, multiple antennas, orthogonal-frequency-division multiplexing (OFDM), space–time frequency (STF) coding, temporal correlation
National Category
Signal Processing Telecommunications
URN: urn:nbn:se:kth:diva-96267DOI: 10.1109/TSP.2009.2016269ISI: 000266333200020ScopusID: 2-s2.0-66849113520OAI: diva2:530075
QC 20120607Available from: 2012-05-31 Created: 2012-05-31 Last updated: 2012-06-07Bibliographically approved

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Shankar, M. R. Bhavani
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