The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Time hopping versus frequency hopping in ultrawideband systems

På svenska

Author

  • Andreas Molisch
  • M Miyake
  • J Zhang

Summary, in English

This paper analyzes frequency-hopping (FH) and time-hopping (TH) as multiple access format for ultrawideband communications. We apply the concept of "fourthegy", recently introduced by Subramanian and Hajek, to both TH and FH. We find that the design rules are different for FCC-compliant systems (where the power spectral density is limited) than for conventional systems (where the energy per bit is limited). We find that fourthegy, and thus possible information rate, is maximized by using a bandwidth that is as large allowed by the FCC. For TH systems, a low duty cycle should be used. For FH, a subdivision into as many bands as possible should be used, and the dwell time on each frequency should be at least as long as the delay spread of the channel.

Publishing year

2003

Language

English

Pages

541-544

Publication/Series

IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2003. PACRIM.

Document type

Conference paper

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • frequency hop communication
  • multi-access systems
  • spread spectrum communication
  • broadband networks

Conference name

IEEE Pacific Rim Conference on Communications, Computers and signal Processing, PACRIM 2003

Conference date

2003-08-28 - 2003-08-30

Status

Published

ISBN/ISSN/Other

  • ISBN: 0-7803-7978-0