Squarewave frequency modulation techniques

Brett Wilson, Zabih Ghassemlooy, Chao Lu

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Transmission of high-quality analogue sourced signals over copper or optical fibre links and networks demands a critical choice of modulation format to achieve both high performance and to avoid unnecessary bandwidth overhead penalties. Pulse time modulation (PTM) techniques are being increasingly employed to overcome many of the problems associated with traditional analogue and digital methods. Among the family of pulse time modulation techniques squarewave frequency modulation (SWFM) is particularly well suited to the transmission of high-quality wideband instrumentation and video signals, such as high definition TV, due to its attractive combination of performance and simplicity. This paper presents theoretical and practical aspects of SWFM and describes a number of experimental SWFM systems capable of transmitting signals from DC to 30 MHz.
Original languageEnglish
Pages (from-to)1505-1512
JournalIEEE Transactions on Communications
Issue number2/3/4
Publication statusPublished - 1995


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