Low complexity MMSE-SIC equalizer employing time-domain recursion for OFDM systems

Ji Hyun Park, Younghoon Whang, Kwang Soon Kim

Research output: Contribution to journalArticle

18 Citations (Scopus)


In this letter, a novel time-domain recursive algorithm is proposed for a minimum-mean-squared error (MMSE) with successive interference cancellation (SIC) scheme. This algorithm allows us to reduce the complexity of classical MMSE-SIC equalizer for suppressing intercarrier interference (ICI) caused by time-varying multipath channels in orthogonal frequency division multiplexing (OFDM) systems, and it can provide almost the same performance as that of the optimal MMSE-SIC equalizer. It is shown in complexity analysis that the proposed scheme shows better complexity reduction than previously reported low-complexity MMSE-SIC schemes when applied to a channel equalizer for an OFDM system.

Original languageEnglish
Pages (from-to)633-636
Number of pages4
JournalIEEE Signal Processing Letters
Publication statusPublished - 2008 Dec 1

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering
  • Applied Mathematics

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