Design method of OFDM/OQAM systems using a weighted time-frequency localization criterion

Author

Dandach, Y. ; Siohan, P.

Author_Institution

Orange Labs., France Telecom, Cesson-Sevigne, France

fYear

2010

fDate

23-27 Aug. 2010

Firstpage

70

Lastpage

74

Abstract

Filterbank-based multicarrier modulations as OFDM with offset QAM (OFDM/OQAM) can provide a time-frequency well-localized pulse shape. We can exploit this property to reduce the intersymbol interference (ISI) and interchannel interference (ICI) when the transmission is over time and frequency dispersive channels. Several criteria can satisfy this goal. In this paper, we introduce a new criterion to optimize the OFDM/OQAM pulse shape. The proposed criterion is flexible and leads to a fast design optimization procedure. In addition the pulse shape obtained is perfectly orthogonal.

Keywords

OFDM modulation; adjacent channel interference; channel bank filters; intersymbol interference; quadrature amplitude modulation; OFDM-OQAM systems; filterbank-based multicarrier modulations; frequency dispersive channels; interchannel interference; intersymbol interference; time-frequency pulse shape; weighted time-frequency localization criterion; well-localized pulse shape; Dispersion; Frequency modulation; OFDM; Prototypes; Shape; Time-frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2010 18th European

Conference_Location

Aalborg

ISSN

2219-5491

Type

conf

Filename

7096625