OFDM transmitters: Analog representation and DFT-based implementation

Yuan-Pei Lin*, See May Phoong

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

30 Scopus citations


The implementation of OFDM transmitters typically consists of a discrete DFT matrix and a digital-to-analog (DAC) converter. Many existing results on the analysis of OFDM systems, e.g., spectral roll-off, are based on a convenient analog representation. In this paper, we show that the analog representation and the DFT-based OFDM transmitters are equivalent only in special cases. Using the analog system to analyze the DFT-based OFDM system may not be valid if there is no equivalent analog representation.

Original languageAmerican English
Pages (from-to)2450-2453
Number of pages4
JournalIEEE Transactions on Signal Processing
Issue number9
StatePublished - 1 Sep 2003


  • Analog representation
  • DFT-based implementation
  • OFDM
  • Pulse shaping
  • Window


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