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

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

Abstract

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).

Original languageEnglish
Title of host publicationConference Record - International Conference on Communications
Place of PublicationPiscataway, NJ, United States
PublisherPubl by IEEE
Pages1472-1477
Number of pages6
Volume3
ISBN (Print)0780318269
Publication statusPublished - 1994
Externally publishedYes
EventProceedings of the 1994 IEEE International Conference on Communications - New Orleans, LA, USA
Duration: 1994 May 11994 May 5

Other

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

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ASJC Scopus subject areas

  • Engineering(all)
  • Media Technology

Cite this

Matsumoto, Y., Kobayashi, K., Sakata, T., Seki, K., Kubota, S., & Kato, S. (1994). VLSI-implemented high speed digital burst modem applications for satellite video TDMA and wireless LAN. In Conference Record - International Conference on Communications (Vol. 3, pp. 1472-1477). Piscataway, NJ, United States: Publ by IEEE.