Analog representation and digital implementation of OFDM systems

Yuan-Pei Lin*, See May Phoong

*Corresponding author for this work

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Many existing results on the analysis of OFDM systems are based on an analog representation. The actual implementation of OFDM transmitters typically consists of a discrete DFT matrix and a digital-to-analog (DAC) converter. In this paper, we show that the analog representation admits the implementation of a DFT matrix followed by a DAC converter only in special cases. Necessary and sufficient conditions for such cases will be given. Analyses based on the analog representation, e.g., spectral roll-off of transmitter outputs and carrier frequency offset, may not be appropriate when digital implementation is employed.

Original languageEnglish
JournalProceedings - IEEE International Symposium on Circuits and Systems
Volume4
DOIs
StatePublished - 14 Jul 2003
EventProceedings of the 2003 IEEE International Symposium on Circuits and Systems - Bangkok, Thailand
Duration: 25 May 200328 May 2003

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