High-speed QPSK/OQPSK burst modem VLSIC

Kiyoshi Kobayashi, Yoichi Matsumoto, Tetsu Sakata, Kazuhiko Seki, Shuzo Kato

研究成果: Conference contribution

1 被引用数 (Scopus)


High speed QPSK/OQPSK full digital burst modem VLSICs have been developed. The demodulator VLSIC employs a reverse-modulation scheme for carrier recovery and an interpolation scheme coupled with a pulse shape filter for bit timing recovery to recover high speed burst mode signals. A wave forming filter for reverse-modulation of OQPSK signals is proposed to increase extracted carrier signal-to-noise ratio. The proposed full digital burst modem VLSICs achieve a fast carrier/clock acquisition performance with a very low carrier slipping rate of 1 × 10-8 event/symbol at an Eb/No of 4dB with short preamble words less than 100 symbols. The developed CMOS VLSICs operates up to 60Mbit/s without an analog clock VCO, in burst mode and for QPSK and OQPSK signals, which conventional methods cannot achieve.

ホスト出版物のタイトルIEEE International Conference on Communications
出版社Publ by IEEE
出版ステータスPublished - 1993
イベントProceedings of the IEEE International Conference on Communications '93 - Geneva, Switz
継続期間: 1993 5 231993 5 26


名前IEEE International Conference on Communications


OtherProceedings of the IEEE International Conference on Communications '93
CityGeneva, Switz

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • 電子工学および電気工学


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