Title :
Optimal OFDM pulse and lattice design for doubly dispersive channels
Author :
Beaver, Scott ; Strohmer, Thomas
Author_Institution :
Dept. of Math., California Univ., Davis, CA, USA
Abstract :
We introduce a general framework for OFDM pulse shape design and demonstrate how to obtain a pulse optimally matched to given channel properties. Furthermore, standard OFDM systems are associated with a rectangular grid in the time-frequency plane, which is not optimal for pulse-shaping OFDM systems for doubly dispersive channels. We introduce lattice OFDM systems which are OFDM systems using general lattices in the time-frequency plane.
Keywords :
OFDM modulation; adjacent channel interference; dispersive channels; fading channels; intersymbol interference; multipath channels; optimisation; pulse shaping; ICI; ISI; channel properties; doubly dispersive channels; interchannel interference; intersymbol interference; multipath fading; optimal OFDM lattice design; optimal OFDM pulse shape design; orthogonal frequency division multiplexing; rectangular grid; time-frequency plane; Dispersion; Filters; Fourier transforms; Intersymbol interference; Lattices; Mathematics; OFDM; Pulse shaping methods; Shape; Time frequency analysis;
Conference_Titel :
Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-7147-X
DOI :
10.1109/ACSSC.2001.987787
