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Implementation issues of a frequency hopped modem

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publicationUnknown
Publisher or commissioning bodyInstitute of Electrical and Electronics Engineers (IEEE)
Pages125 - 129
ISBN (Print)07803742X, 078032742X
StatePublished - Jul 1995


Conference45th Vehicular Technology Conference 1995 (VTC 1995-Spring)
CountryUnited States
Period1/07/95 → …


Investigations into code division multiple access (CDMA) have shown that frequency hopping (FH) possesses many of the advantages claimed by direct sequence (DS) spread spectrum techniques. This paper investigates the theoretical and practical implementation issues associated with designing a FH modem. The criteria which are explored include areas which are specifically associated with the frequency hopping nature of the modem, such as the the hopping synthesizer, hop duration, and hop bin separation. Furthermore, consideration is made of the impact of frequency hopping on more general design issues, such as coding, modulation, and multiple access. Work at the Centre for Communications Research (CCR) in Bristol has been carried out to develop a practical implementation of a prototype frequency hopped modem. The paper includes the modem design, and preliminary performance in an additive white noise channel.

Additional information

Conference Proceedings/Title of Journal: 45th IEEE Vehicular Technology Conf., Chicago, 25-28 July Rose publication type: Conference contribution Terms of use: Copyright © 1995 IEEE. Reprinted from Proceedings of IEEE Vehicular Technology Conference, 1995. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Research areas

  • land mobile radio, frequency hop communication


45th Vehicular Technology Conference 1995 (VTC 1995-Spring)

Duration1 Jul 1995 → …
CountryUnited States

Event: Conference




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