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An Improved Cancellation Multiuser Detector for Narrowband Signals
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. (Radio Communication Systems)ORCID iD: 0000-0001-9697-9978
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. (Radio Communication Systems)
2005 (English)In: VTC 2005-Spring: 2005 IEEE 61st Vehicular Technology Conference, New York: IEEE , 2005, 973-977 p.Conference paper (Refereed)
Abstract [en]

This paper examines the possibility of reducing error propagation in the successive interference cancellation multiuser detector (SIC-MUD) for a narrowband system. A simple sequence estimation algorithm is employed, working on a symbol by symbol user basis, not affecting the operation of FEC decoding if present. Operating along the stages of the SIC-MUD scheme, this algorithm has a complexity that increases only linearly with the number of users and thus can be used for a larger number of users, as against the optimum joint detection-MUD (JD-MUD), whose complexity increases exponentially with the number of users. Investigation is carried out for both AWGN and Rayleigh fading channels. The obtained results show that the Improved SIC-MUD scheme reduces the error propagation considerably and, with its low complexity, can be a good alternative for the JD-MUD scheme.

Place, publisher, year, edition, pages
New York: IEEE , 2005. 973-977 p.
, IEEE VTS Vehicular Technology Conference. Proceedings, ISSN 1090-3038 ; 61
Keyword [en]
Algorithms, Channel capacity, Codes (symbols), Computational complexity, Detectors, Rayleigh fading, Signal processing
National Category
Computer and Information Science
Research subject
URN: urn:nbn:se:kth:diva-29798DOI: 10.1109/VETECS.2005.1543451ISI: 000232179301055ScopusID: 2-s2.0-26444538452ISBN: 0-7803-8887-9OAI: diva2:398114
2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future; Stockholm; Sweden; 30 May 2005 through 1 June 2005

QC 20110217

Available from: 2011-02-16 Created: 2011-02-16 Last updated: 2014-12-02Bibliographically approved

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