Nyquist QPSK transmission using rational-function filter for mobile radio

Tadao Takami, Shigeki Saito, Shigeru Tomisato, Yasushi Yamao

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

1 Citation (Scopus)

Abstract

The design and implementation of a Nyquist QPSK (quadrature phase-shift keying) transmission scheme using a rational-function receiving filter are presented. The scheme is suitable for mobile radios which must be as small as possible and operate with limited power sources. A transitional Butterworth-Thomson (TBT) filter is examined as a rational-function filter, and a ceramic receiving filter is developed with optimum TBT characteristics. π/4-shifted QPSK transmission experiments using this filter are conducted. The experimental results show that the required input level and cochannel interference are superior by 1 dB to 0.9 dB, respectively, to those of the conventional transmission scheme. The maximum permissive delay spread in frequency-selective fading channels is improved by around 30%.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
PublisherPubl by IEEE
Pages663-668
Number of pages6
ISBN (Print)0879425822
Publication statusPublished - May 1991
Externally publishedYes
Event41st IEEE Vehicular Technology Conference - St. Louis, MO, USA
Duration: May 19 1991May 22 1991

Other

Other41st IEEE Vehicular Technology Conference
CitySt. Louis, MO, USA
Period5/19/915/22/91

Fingerprint

Rational functions
Quadrature phase shift keying
Butterworth filters
Cochannel interference
Frequency selective fading
Radio receivers
Fading channels
Experiments

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Takami, T., Saito, S., Tomisato, S., & Yamao, Y. (1991). Nyquist QPSK transmission using rational-function filter for mobile radio. In IEEE Vehicular Technology Conference (pp. 663-668). Publ by IEEE.

Nyquist QPSK transmission using rational-function filter for mobile radio. / Takami, Tadao; Saito, Shigeki; Tomisato, Shigeru; Yamao, Yasushi.

IEEE Vehicular Technology Conference. Publ by IEEE, 1991. p. 663-668.

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

Takami, T, Saito, S, Tomisato, S & Yamao, Y 1991, Nyquist QPSK transmission using rational-function filter for mobile radio. in IEEE Vehicular Technology Conference. Publ by IEEE, pp. 663-668, 41st IEEE Vehicular Technology Conference, St. Louis, MO, USA, 5/19/91.
Takami T, Saito S, Tomisato S, Yamao Y. Nyquist QPSK transmission using rational-function filter for mobile radio. In IEEE Vehicular Technology Conference. Publ by IEEE. 1991. p. 663-668
Takami, Tadao ; Saito, Shigeki ; Tomisato, Shigeru ; Yamao, Yasushi. / Nyquist QPSK transmission using rational-function filter for mobile radio. IEEE Vehicular Technology Conference. Publ by IEEE, 1991. pp. 663-668
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