VLSI-implemented high speed digital burst modem applications for satellite video TDMA and wireless LAN

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

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

High speed (60 Mb/s) QPSK/OQPSK burst modem Very Large Scale Integrated Circuits (VLSICs), which are greatly useful for radio units to be compact, economical and maintenance-free, are introduced. These VLSICs enable modems to eliminate the analog devices such as mixers required for baseband modulation and zero-IF conversion in demodulation, an analog voltage controlled oscillator (VCO) for bit timing recovery and a voltage controlled attenuator for automatic gain control (AGC). In addition to the full-digital implementation, the demodulator VLSIC achieves fast carrier-acquisition for burst mode operation by employing a reverse-modulation carrier recovery scheme capable of operating for OQPSK signals, and fast clock-acquisition by using a bit-timing recovery scheme with bit-timing estimation and interpolation coupled with a pulse-shaping filter. Results of experiment on the assumption of a video time division multiple access (TDMA) system show that the developed VLSICs perform well at the high speed (60 Mb/s) and with the short preamble words (80 symbols).

本文言語English
ホスト出版物のタイトルConference Record - International Conference on Communications
出版社Publ by IEEE
ページ1472-1477
ページ数6
ISBN(印刷版)0780318269
出版ステータスPublished - 1994
外部発表はい
イベントProceedings of the 1994 IEEE International Conference on Communications - New Orleans, LA, USA
継続期間: 1994 5 11994 5 5

出版物シリーズ

名前Conference Record - International Conference on Communications
3
ISSN(印刷版)0536-1486

Other

OtherProceedings of the 1994 IEEE International Conference on Communications
CityNew Orleans, LA, USA
Period94/5/194/5/5

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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