| Publisher | ETH Zurich | ||
|---|---|---|---|
| Format | 1.2MB PDF, requires Acrobat Rdr 5 | Date added | 28 Mar 2005 |
| Topics | Wireless LAN, Modems, Mobile - Wireless Communications | ||
| Downloads | 225 | ||
One of the factors determining the performance of wireless Orthogonal Frequency Division Multiplexing (OFDM) systems is time-frequency localization of the transmitter and receiver pulse shaping filters. OFDM based on offset quadrature amplitude modulation (OFDM/OQAM) bypasses a major disadvantage of OFDM based on ordinary QAM, namely the fact that time-frequency well-localized pulse shaping filters are prohibited in the case of critical time-frequency density where spectral efficiency is maximal. This paper studies the problem of pulse shaping filter design for OFDM/OQAM systems and establishes relations between OFDM/OQAM and Wilson and Gabor expansions.
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