A derivation on the equivalence between Newton's method and DF DFT-based method for channel estimation in OFDM systems

Meng Lin Ku*, Chia-Chi Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

In this paper, we derive the decision-feedback (DF) discrete Fourier transform (DFT)-based channel estimation method from Newton's method for space-time block code (STBC)/ orthogonal frequency division multiplexing (OFDM) systems. Through our derivation, the equivalence between Newton's method and the DF DFT-based method is established. Computer simulations are also used to demonstrate the equivalence of the two methods in terms of BER and normalized square error (NSE) performance. Finally, the results presented in this paper also hold for conventional OFDM systems.

Original languageEnglish
Article number4657342
Pages (from-to)3982-3987
Number of pages6
JournalIEEE Transactions on Wireless Communications
Volume7
Issue number10
DOIs
StatePublished - 1 Oct 2008

Keywords

  • Channel estimation
  • Decision-feedback
  • Discrete fourier transform
  • Newton's method
  • Orthogonal frequency division multiplexing
  • Space-time block code

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