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Non-Coherent Sphere Decoding for Space-Time Modulation
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS.
2005 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Multiple-symbol differential detection (MSDD) is an effective detection strategy for achieving good error performance in Rayleigh fading environment. Combined with multiple-antenna (MIMO) systems, such MIMO detection scheme can increase computational complexity exponentially in both the length of the sequence of received samples to be detected and the number of antennas if maximum-likelihood (ML) performance is desired. To overcome this easily prohibiting complexity we intend to apply sphere decoding, which is known to achieve ML performance with roughly polynomial complexity for single antenna digital communication systems.

In this paper, we assess sphere decoding (Schnorr-Euchner variation of the algorithm) performance and complexity for multiple antenna systems transmitting uncoded diagonal signals over time-varying flat Rayleigh fading channels. Multiple-symbol differential detection is accomplished without channel state information at the receiving end.

Place, publisher, year, edition, pages
2005. , 36 p.
National Category
Computer and Information Science
URN: urn:nbn:se:kth:diva-28064OAI: diva2:383906
Available from: 2011-03-11 Created: 2011-01-06 Last updated: 2011-03-11Bibliographically approved

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Hag, Vincent
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