Baseband Processing Frequency-Drift-Compensation QDPSK Signal Transmission

M. Ikura, K. Ohno, F. Adachi

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


BER performance of differential detection severely degrades with carrier frequency drift. This Letter proposes a baseband processing frequency-drift-compensation (FDC) scheme that estimates the phase rotation of the differential detector output expressed in complex form and multiplies the complex conjugate of the estimate to cancel the phase rotation. 16kbit/s QDPSK transmission experiments using a simulated Rayleigh fading channel show that a carrier frequency drift of up to about 3/64 times the bit rate can be tolerated with the use of the proposed baseband FDC.

Original languageEnglish
Pages (from-to)1521-1523
Number of pages3
JournalElectronics Letters
Issue number17
Publication statusPublished - 1991 Jun 20


  • Digital communication systems
  • Digital transmission


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