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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