Constrained Complexity Spatio-Temporal Interference Rejection Combining
1999 (English)In: Proceedings of SPAWC’99, Signal Processing Advances in Wireless Communications, IEEE , 1999, 110-113 p.Conference paper (Refereed)
Space-time processing for co-channel interference (CCI) rejection and equalization with antenna arrays may provide large gains over space-only processing, especially in interference limited scenarios. However, taking thetemporal correlation of the noise and CCI process into account leads to sequence detection with highercomplexity as compared to space-only processing that neglects this correlation. We propose the use of the generalized Viterbi algorithm for sequence detection with lower complexity. Special cases include the M-algorithm and the delayed decision feedback sequence estimator. A relevant comparison between spatial andspatio-temporal processing with sequence detectors of the same complexity may thus be performed. Numerical examples show substantial gains for spatio-temporal processing as compared to space-only processing also in this case when the optimality of the sequence detector is traded for interference rejection.
Place, publisher, year, edition, pages
IEEE , 1999. 110-113 p.
Antenna arrays, Detectors, Downlink, Gaussian noise, Interchannel interference, Interference constraints, Intersymbol interference, Radiofrequency interference, Reactive power, Viterbi algorithm
IdentifiersURN: urn:nbn:se:kth:diva-92541DOI: 10.1109/SPAWC.1999.783031OAI: oai:DiVA.org:kth-92541DiVA: diva2:513558
2nd IEEE Workshop on Signal Processing Advances in Wireless Communications. SPAWC '99. 09-12 May 1999, Annapolis, MD
NR 201408052012-04-022012-04-022012-04-02Bibliographically approved