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Title: Asymptotic Performance of Lp-Norm MIMO Detection
Authors: Ahmed, I
Schober, R
Mallik, R K
Keywords: CHANNELS
Date: 2010
Citation: Ahmed, I., Schober, R., & Mallik, R. K. (2010). Asymptotic Performance of Lp-Norm MIMO Detection. Proceedings of the 2010 IEEE 72nd Vehicular Technology Conference Fall (VTC 2010-Fall), Ottawa, CA. doi: 10.1109/VETECF.2010.5594178
Abstract: Full search L1-norm (FS-L1) and sphere decoding L∞-norm (SD-L∞) detectors have been previously proposed for multiple-input multiple-output (MIMO) systems as they entail a lower receiver complexity than the optimal L2-norm detector. However, the performance loss caused by application of these suboptimal detectors in additive white Gaussian noise (AWGN) has not been well investigated yet. In this paper, we analyze the asymptotic bit error rate of general FS-Lp and SD-Lp detectors in independent identically distributed Rayleigh fading channels. Our results are valid for all types of noise with finite moments including AWGN. We show that both FS-Lp and SD-Lp detectors achieve a diversity gain equal to the number of receive antennas independent of the metric parameter p and the type of noise. However, except for the conventional L2 case, the performances of FS-Lp and SD-Lp detectors are not identical and the performance differences may be several dB for large numbers of receive antennas. Also, our results show that p=2 is not optimal in non-Gaussian noise and L1 and L∞ detectors may result in large performance gains or degradations compared to L2 detectors depending on the type of noise.
ISBN: 978-1-4244-3574-6
ISSN: 1090-3038
Project Number: 104519
Project Title: International Research Chairs Initiative (IRCI)
Copyright: IEEE
Access Restriction: Due to copyright restrictions the full text of this research output is not available in the IDRC Digital Library or by request from the IDRC Library. / Compte tenu des restrictions relatives au droit d`auteur, le texte intégral de cet extrant de recherche n`est pas accessible dans la Bibliothèque numérique du CRDI, et il n`est pas possible d`en faire la demande à la Bibliothèque du CRDI.
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