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Open Access

Prevoting Cancellation-Based Detection for Underdetermined MIMO Systems

EURASIP Journal on Wireless Communications and Networking20102010:932904

Received: 29 April 2010

Accepted: 26 September 2010

Published: 29 September 2010


Various detection methods including the maximum likelihood (ML) detection have been studied for multiple-input multiple-output (MIMO) systems. While it is usually assumed that the number of independent data symbols, , to be transmitted by multiple antennas simultaneously is smaller than or equal to that of the receive antennas, , in most cases, there could be cases where , which results in underdetermined MIMO systems. In this paper, we employ the prevoting cancellation based detection for underdetermined MIMO systems and show that the proposed detectors can exploit a full receive diversity. Furthermore, the prevoting vector selection criteria for the proposed detectors are taken into account to improve performance further. We also show that our proposed scheme has a lower computational complexity compared to existing approaches, in particular when slow fading MIMO channels are considered.


Information SystemSystem ApplicationMIMO SystemFull ArticlePublisher Note

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Authors’ Affiliations

School of Engineering, Swansea University, Swansea, UK
School of Electronics Engineering and Computer Science, Peking University, Beijing, China


© Lin Bai et al. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.