OFDM transmitters: Analog representation and DFT-based implementation

Yuan-Pei Lin; See May Phoong

doi:10.1109/TSP.2003.815392

OFDM transmitters: Analog representation and DFT-based implementation

Yuan-Pei Lin^*, See May Phoong

^*Corresponding author for this work

Department of Electrical and Computer Engineering

Research output: Contribution to journal › Letter › peer-review

30 Scopus citations

Abstract

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 language	American English
Pages (from-to)	2450-2453
Number of pages	4
Journal	IEEE Transactions on Signal Processing
Volume	51
Issue number	9
DOIs	https://doi.org/10.1109/TSP.2003.815392
State	Published - 1 Sep 2003

Keywords

Analog representation
DFT-based implementation
OFDM
Pulse shaping
Window

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10.1109/TSP.2003.815392

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AB - 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.

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OFDM transmitters: Analog representation and DFT-based implementation

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