DocumentCode
2030511
Title
Welch Bound for FIR Lowpass Filtered Sequences
Author
Jitsumatsu, Y. ; Kohda, T.
Author_Institution
Dept. of Comput. Sci. & Commun. Eng., Kyushu Univ., Fukuoka
fYear
2007
fDate
24-29 June 2007
Firstpage
2506
Lastpage
2509
Abstract
Pulse shaping filters are commonly implemented by FIR filters. Motivated by Slepian´s philosophy of discrete prolate spheroidal sequences (DPSS), we investigate Welch´s lower bound on aperiodic auto- and cross-correlations for oversampled sequences. An oversampled sequence set having minimum cross-correlations in chip-asynchronous CDMA system is provided under a given bandwidth condition.
Keywords
FIR filters; code division multiple access; filtering theory; pulse shaping circuits; FIR filters; FIR lowpass filtered sequences; Slepian philosophy; Welch lower bound; aperiodic auto-correlations; chip-asynchronous CDMA system; cross-correlations; discrete prolate spheroidal sequences; oversampled sequences; pulse shaping filters; Bandwidth; Computer science; Delay effects; Digital filters; Finite impulse response filter; Low pass filters; Multiaccess communication; Pulse shaping methods; Shape; Transmitters; Discrete prolate spheroidal sequences (DPSS); Total square correlations (TSC); Welch bound;
fLanguage
English
Publisher
ieee
Conference_Titel
Information Theory, 2007. ISIT 2007. IEEE International Symposium on
Conference_Location
Nice
Print_ISBN
978-1-4244-1397-3
Type
conf
DOI
10.1109/ISIT.2007.4557595
Filename
4557595
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