Abstract
This paper proposes a scheme based on the short-term discrete Fourier transform (ST-DFT), as an FSK demodulation method suited to a low-earth-orbit satellite communication channel with time-varying frequency offset. This demodulation system has the feature that the hardware configuration is simple, but an effective detection window synchronization scheme must be established since the bit-error rate (BER) is greatly affected by detection window synchronization in the receiver. This article proposes a detection window synchronization scheme for the FSK demodulation method based on ST-DFT. Using the proposed detection window synchronization scheme, the optimal detection window timing and center frequency are simultaneously estimated. In addition to the detection window synchronization scheme, this article proposes two methods for adaptive tracking of the time-varying center frequency. The BER performances of the proposed methods in the channel with frequency offset are evaluated by computer simulation. © 1999 Scripta Technica, Electron Comm Jpn Pt 1, 83(4): 73–82, 2000
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Electronics and Communications in Japan (Part I: Communications)
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
