π/4-shift QPSK coherent detection demodulator for TDMA/TDD systems

Y. Matsumoto, Shuji Kubota, M. Morikura, S. Kato

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

1 Citation (Scopus)

Abstract

This paper proposes a π/4-shift QPSK coherent detection demodulator for microcellular TDMA/TDD systems. The demodulator employs a reverse-modulation type carrier recovery circuit with a -π/4 signal phase rotator for coherent detection, and an initial clock recovery circuit for fast synchronization of transmitted bursts. Computer simulation results show that coherent detection with the proposed carrier recovery circuit reduces the irreducible frame error rate by 50% compared with differential detection, and achieves a 4 dB improvement at a frame error rate of 10-2 with transmission diversity in the fading channel typical of personal communication. In addition, the proposed initial clock recovery circuit is useful to avoid hangup and to shorten the preamble bits needed for clock recovery.

Original languageEnglish
Title of host publicationIEEE Vehicular Technology Conference
Place of PublicationPiscataway, NJ, United States
PublisherPubl by IEEE
Pages396-399
Number of pages4
ISBN (Print)078031266X
Publication statusPublished - 1993
Externally publishedYes
EventProceedings of the 43rd IEEE Vehicular Technology Conference - Secaucus, NJ, USA
Duration: 1993 May 181993 May 20

Other

OtherProceedings of the 43rd IEEE Vehicular Technology Conference
CitySecaucus, NJ, USA
Period93/5/1893/5/20

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Matsumoto, Y., Kubota, S., Morikura, M., & Kato, S. (1993). π/4-shift QPSK coherent detection demodulator for TDMA/TDD systems. In IEEE Vehicular Technology Conference (pp. 396-399). Piscataway, NJ, United States: Publ by IEEE.