Title :
Time-Frequency Well-Localized Pulse Shaping Filter Design for High Speed Data and Multi-Carrier System Based on DPSS
Author :
Chen, Xiaoguang ; Chen, Hui
Author_Institution :
Dept. of Commun. Sci. & Eng., Fudan Univ., Shanghai
Abstract :
The discrete prolate spheroidal sequences (DPSS) are used to design time-frequency well-localized pulse shaping filters for OFDM/OQAM systems. Compared with the rectangular filters of the OFDM multi-carrier systems, the filter we design can efficiently provide protection against frequency dispersion caused by Doppler spread. The optimized pulse shaping filters maximize the signal energy around the carrier frequencies, resulting in minimal spectral overlap between the adjacent sub-channels.
Keywords :
OFDM modulation; pulse shaping circuits; quadrature amplitude modulation; time-varying filters; DPSS; Doppler spread; OFDM/OQAM systems; discrete prolate spheroidal sequences; frequency dispersion; high speed data; multi-carrier system; time-frequency well-localized pulse shaping filter design; Bandwidth; Data engineering; Digital video broadcasting; Filters; OFDM; Protection; Pulse shaping methods; Quadrature amplitude modulation; Time frequency analysis; Wireless LAN;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.281
