An extrinsic Kalman filter for iterative multiuser decoding
2004 (English)In: IEEE Transactions on Information Theory, ISSN 0018-9448, Vol. 50, no 4, 642-648 p.Article in journal (Refereed) Published
One powerful approach for multiuser decoding is to iterate between a linear multiuser filter (which ignores coding constraints) and individual decoders (which ignore multiple-access interference). Subject to clearly formulated statistical assumptions and the history of input signals provided by the outer decoders over all previous iterations, an extrinsic Kalman filter is suggested. This approach is motivated by the recent observation that decoder outputs are loosely correlated during initial iterations. Numerical results show that iterative decoding using this filter provides better performance in terms of the supportable load and convergence speed as compared to previously suggested linear-filter-based iterative decoders.
Place, publisher, year, edition, pages
2004. Vol. 50, no 4, 642-648 p.
iterative decoding, Kalman filtering, multiple access, multiuser detection, recursive filters
IdentifiersURN: urn:nbn:se:kth:diva-62640DOI: 10.1109/TIT.2004.825031ISI: 000220475700006OAI: oai:DiVA.org:kth-62640DiVA: diva2:480769
QC 201201202012-01-192012-01-192012-01-20Bibliographically approved