Reverse modulation carrier recovery for offset QPSK burst signals

Masahiro Umehira, Shuzo Kato

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This paper describes reverse modulation carrier recovery with a tank-limiter for Offset QPSK (OQPSK) burst signals. Acquisition performance is discussed taking into account hardware implementation errors in the carrier recovery circuit. The results indicate hardware implementation errors cause a significant recovered carrier phase error during BTR (Bit Timing Recovery) of OQPSK burst signals. A phase error reduction technique by modifying the BTR code for OQPSK burst signals is proposed to improve the acquisition performance. Computer simulation and hardware experiments confirmed its improvement. The performance of a prototype OQPSK burst demodulator using the proposed carrier recovery scheme is also presented.

Original languageEnglish
Pages (from-to)616-624
Number of pages9
JournalIEICE Transactions on Communications
Issue number4
Publication statusPublished - 1995 Apr 1

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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