Uplink multiple-user V-BLAST optimal detection ordering with service differentiation

Tariq Al-Khasib, Lutz Lampe, Hussein Alnuweiri

Research output: Contribution to journalArticle

7 Citations (Scopus)


In this paper, we introduce a new differentiated successive-interference cancellation (DiffSIC) ordering technique for uplink multiple-user systems. Unlike classical successive-interference cancellation (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. To develop DiffSIC, we introduce analytical methods toward finding instantaneous symbol error rates (SERs) for zero-forcing SIC (ZF-SIC) and minimum mean square error SIC (MMSE-SIC) detectors. Furthermore, we devise two procedures to reduce the computational complexity associated with the computation of SER and the enumeration of detection orders. We present a number of numerical results that clearly demonstrate the ability of DiffSIC to accomplish service differentiation and overall performance improvement in general.

Original languageEnglish
Article number5415642
Pages (from-to)2308-2319
Number of pages12
JournalIEEE Transactions on Vehicular Technology
Issue number5
Publication statusPublished - 1 Jun 2010
Externally publishedYes



  • Successive interference cancellation (SIC)
  • Symbol error rate (SER) analysis
  • User differentiation
  • Vertical Bell LAboratory layered Space Time (V-BLAST)
  • Zero-forcing (ZF) detector

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Aerospace Engineering
  • Automotive Engineering
  • Computer Networks and Communications
  • Applied Mathematics

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