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- W2081483090 abstract "ABSTRACT Orthogonal frequency division multiplexing (OFDM) has recently become a popular technique for high-data-rate transmission over wireless channels. Due to the time-frequency dispersion caused by the channel, the performance of OFDM systems depends critically on the time-frequency localization of the pulse shaping filters. In this paper, weshow how the recent duality and biorthogonality theory2 developed in the context of Weyl-Heisenberg frames can be used to devise simple and efficient design procedures for well-localized OFDM pulse shaping filters. We consider OFDM systems employing time-frequency guard regions and OFDM systems based on offset QAM. We proposeFFT-based design methods for pulse shaping filters with arbitrary length and arbitrary overlapping factors. Finally, we present some design examples. Keywords: OFDM, pulse shaping filter, Weyl-Heisenberg frames 1. INTRODUCTION Orthogonal frequency division multiplexing (OFDM)3'° is employed in current telecommunications standards such" @default.
- W2081483090 created "2016-06-24" @default.
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- W2081483090 date "1999-10-26" @default.
- W2081483090 modified "2023-09-27" @default.
- W2081483090 title "<title>Efficient design of pulse-shaping filters for OFDM systems</title>" @default.
- W2081483090 doi "https://doi.org/10.1117/12.366818" @default.
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