Title :
Design of BFDM/OQAM systems based on biorthogonal modulated filter banks
Author :
Siclet, Cyrille ; Siohan, Pierre
Author_Institution :
France Telecom R&D, Cesson Sevigne, France
Abstract :
A new system of multicarrier modulation is described which takes advantage of the biorthogonality property to generalize the OFDM/OQAM technique into a biorthogonal frequency division multiplex scheme named BFDM/OQAM. A discrete-time analysis of this scheme leads to a discrete model of modulated transmultiplexer. Using a polyphase decomposition of this transmultiplexer, and assuming a distortion-free channel, we determine the mathematical conditions on the prototype filter allowing an exact cancellation of intersymbol and interchannel interference. Then, computationally efficient realizations of the modulators and demodulators are given. Lastly, some design examples are provided illustrating respective advantages of BFDM/OQAM and OFDM/OQAM
Keywords :
OFDM modulation; adjacent channel interference; channel bank filters; demodulators; discrete time filters; interference suppression; intersymbol interference; quadrature amplitude modulation; transmultiplexing; BFDM/OQAM systems; biorthogonal frequency division multiplex scheme; biorthogonal modulated filter banks; computationally efficient realizations; demodulators; design; discrete model; discrete-time analysis; distortion-free channel; interchannel interference; interference cancellation; intersymbol interference; modulated transmultiplexer; modulators; multicarrier modulation; polyphase decomposition; prototype filter; Channel bank filters; Digital video broadcasting; Frequency division multiplexing; Intersymbol interference; OFDM modulation; Prototypes; Quadrature amplitude modulation; Research and development; Shape; Time frequency analysis;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891230
