A high speed QPSK/OQPSK digital burst modem for LSIC implementation

Kazuhlko Seki, Yoichl Matsumoto, Klyoshi Kobayashi, Tetsu Sakata, Masahiro Morikura, Shuji Kubota, Shuzo Kato

研究成果: Conference contribution

抄録

This paper proposes a high speed QPSK/OQPSK digital burst modem which employs a reverse modulation carrier recovery scheme to recover high speed burst mode signals in low Eb/No environment. The proposed all digital high speed burst modem achieves both high speed carrier recovery and very low carrier slipping performances simultaneously which other methods cannot achieve. To achieve these performances, a carrier recovery circuit with a wave forming filter for reverse modulation of OQPSK signal is proposed to reduce operation speed and still to keep the same carrier signal-to-noise ratio, in addition, an interpolation scheme with a pulse shape filter for bit timing recovery to avoid analogue VCO and to reduce overhead for bit timing recovery. Computer simulation results show that the proposed demodulator achieves high speed carrier acquisition and a low carrier slipping rate enough to meet the required value, 1.0×10-8 event/symbol at an Eb/No of 4.1dB with negligible small bit error rate degradation. The proposed modem can be implemented in all-digital circuits and suitable for LSIC implementation.

本文言語English
ホスト出版物のタイトルGLOBECOM 1992 - Communication for Global Users
ホスト出版物のサブタイトルIEEE Global Telecommunications Conference
出版社Institute of Electrical and Electronics Engineers Inc.
ページ422-426
ページ数5
ISBN(電子版)0780306082, 9780780306080
DOI
出版ステータスPublished - 1992
外部発表はい
イベント1992 IEEE Global Telecommunications Conference: Communication for Global Users, GLOBECOM 1992 - Orlando, United States
継続期間: 1992 12 61992 12 9

出版物シリーズ

名前GLOBECOM 1992 - Communication for Global Users: IEEE Global Telecommunications Conference

Conference

Conference1992 IEEE Global Telecommunications Conference: Communication for Global Users, GLOBECOM 1992
国/地域United States
CityOrlando
Period92/12/692/12/9

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • ハードウェアとアーキテクチャ
  • 情報システム
  • 情報システムおよび情報管理
  • 安全性、リスク、信頼性、品質管理

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