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Soft MIMO Detection at Fixed Complexity
Royal Institute of Technology (KTH), Stockholm, Sweden.ORCID iD: 0000-0002-7599-4367
Royal Institute of Technology (KTH), Stockholm, Sweden.
2007 (English)In: Proceedings of the 50th IEEE Global Telecommunications Conference (GLOBECOM'07), IEEE , 2007, 1617-1621 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper presents a new approach to soft demodulation for MIMO channels. The proposed method is an approximation to the exact a posteriori probability-per-bit computer. The main idea is to marginalize the posterior density for the received data exactly over the subset of the transmitted bits that are received with the lowest signal-to-noise-ratio, and then marginalize this density approximately over the remaining bits. Unlike the exact demodulator, whose complexity is huge due to the need for enumerating all possible combinations of transmitted constellation points, the proposed method has very low complexity. Additionally, its complexity is fixed, which makes it suitable for pipelined implementation. Numerical examples illustrate its performance on slow fading 4times4 and 6times6 complex MIMO channels.

Place, publisher, year, edition, pages
IEEE , 2007. 1617-1621 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-25606DOI: 10.1109/GLOCOM.2007.311ISBN: 978-1-4244-1043-9 (print)OAI: oai:DiVA.org:liu-25606DiVA: diva2:246096
Available from: 2009-10-08 Created: 2009-10-08 Last updated: 2016-09-15Bibliographically approved

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Larsson, Erik G.

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