Performance analysis of joint switched diversity and adaptive modulation

Haewoon Nam*, Young Chai Ko, Mohamed-Slim Alouini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


In this paper, a simple and practical system based on a switched diversity scheme with adaptive modulation is presented. This system provides a reduced number of channel estimation while offering the optimum spectral efficiency given by a selection diversity system. In addition, the switching threshold is easily manipulated so as to make an efficient use of the trade-off between spectral efficiency and channel estimation overhead. An extension of switched diversity into a multiuser scheduling is later also considered. This switch-based multiuser access scheme results in a lower average feedback load than that for the optimal selection-based multiuser scheme. Numerical results show that we can obtain a trade-off between spectral efficiency and the feedback load by choosing the switching threshold appropriately.

Original languageEnglish (US)
Article number4657324
Pages (from-to)3780-3790
Number of pages11
JournalIEEE Transactions on Wireless Communications
Issue number10
StatePublished - Oct 1 2008


  • Adaptive modulation
  • Multiuser diversity
  • Switch-based multiuser scheduling
  • Switched diversity

ASJC Scopus subject areas

  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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