Optimized differential GFSK demodulator

Bo Yu, Liuqing Yang, Chia Chin Chong

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Gaussian frequency shift keying (GFSK) is a promising digital modulation scheme. The design of simple and high-performance receivers for GFSK systems is a challenging task. In this letter, we develop an optimized differential GFSK demodulator and investigate the phase wrapping issue in its implementation. Simulation results show bit-error-rate (BER) performance improvement in comparison with conventional differential demodulators in both AWGN and flat fading channels. We also compare our proposed demodulator with other existing alternatives in terms of BER performance.

Original languageEnglish (US)
Article number5753991
Pages (from-to)1497-1501
Number of pages5
JournalIEEE Transactions on Communications
Issue number6
StatePublished - Jun 2011
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by DOCOMO USA Labs. Parts of the results in this paper have been presented at the 43rd Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, November 2009.


  • Gaussian frequency shift keying (GFSK)
  • differential demodulation
  • phase wrapping


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