Up-Link Multi-User V-BLAST Optimal Detection Ordering with Service Differentiation

TitleUp-Link Multi-User V-BLAST Optimal Detection Ordering with Service Differentiation
Publication TypeConference Paper
Year of Publication2009
AuthorsAl-Khasib, T., L. Lampe, and H. Alnuweiri
Conference NameVehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th
Pagination1 -6
Date Publishedsep.
Keywordsdifferentiated successive interference cancellation, error statistics, interference suppression, least mean squares methods, MIMO communication, minimum mean square error SIC, multiple-input multiple-output systems, multiuser detection, symbol error rate, uplink multiuser V-BLAST optimal detection, user service profiles, zero forcing SIC

In this paper, we introduce a new Differentiated Successive Interference Cancellation (DiffSIC) ordering technique for up-link multi-user Multiple-Input Multiple-Output (MIMO) systems. Unlike classical SIC, DiffSIC is capable of differentiating users according to their priority or class of service by selecting a detection order that best fits the users' service profiles. In addition, DiffSIC is able to achieve the optimal SIC detection order that results in the best overall system performance. In order to develop DiffSIC, we introduce analytical methods towards finding instantaneous symbol error rates (SER) for the Zero Forcing SIC (ZF-SIC) and Minimum Mean Square Error SIC (MMSESIC) detectors. We present a number of numerical results which clearly demonstrate the ability of DiffSIC to accomplish service differentiation and overall performance improvement in general.


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