Chip-asynchronous version of welch bound: Gaussian pulse improves BER performance

Yutaka Jitsumatsu, Tohru Kohda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We give a quadratic form expression of the mean squared multiple-access interference (MAI) averaged over relative time delays for chip-asynchronous DS/CDMA systems. A lower bound on the mean squared MAI is referred to as chip-asynchronous version of Welch bound, which depends on chip pulse shapes. Real analysis tells us that a pair of rectangular and sine functions is one of Fourier transform and its inverse Fourier transform and vice versa. On the other hand, Gaussian pulses have the self-duality property. Gaussian chip pulses sacrifice inter-symbol interference, however, they give smaller mean squared MAI, as well as lower bit error rate, than the conventional Nyquist pulses.

Original languageEnglish
Title of host publicationSequences and Their Applications, SETA 2006 - 4th International Conference, Proceedings
PublisherSpringer Verlag
Pages351-363
Number of pages13
ISBN (Print)3540445234, 9783540445234
Publication statusPublished - Jan 1 2006
Event4th International Conference on Sequences and Their Applications, SETA 2006 - Beijing, China
Duration: Sep 24 2006Sep 28 2006

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4086 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other4th International Conference on Sequences and Their Applications, SETA 2006
CountryChina
CityBeijing
Period9/24/069/28/06

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All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Science(all)

Cite this

Jitsumatsu, Y., & Kohda, T. (2006). Chip-asynchronous version of welch bound: Gaussian pulse improves BER performance. In Sequences and Their Applications, SETA 2006 - 4th International Conference, Proceedings (pp. 351-363). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 4086 LNCS). Springer Verlag.