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Time hopping versus frequency hopping in ultrawideband systems

Molisch, Andreas LU ; Miyake, M and Zhang, J (2003) IEEE Pacific Rim Conference on Communications, Computers and signal Processing, PACRIM 2003 In IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2003. PACRIM. p.541-544
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
frequency hop communication, multi-access systems, spread spectrum communication, broadband networks
in
IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2003. PACRIM.
pages
541 - 544
conference name
IEEE Pacific Rim Conference on Communications, Computers and signal Processing, PACRIM 2003
ISBN
0-7803-7978-0
DOI
10.1109/PACRIM.2003.1235838
language
English
LU publication?
yes
id
3e20946e-3e47-40ef-9ea0-3f716f8612ad (old id 600579)
date added to LUP
2007-12-05 13:50:17
date last changed
2016-04-16 12:09:53
@misc{3e20946e-3e47-40ef-9ea0-3f716f8612ad,
  abstract     = {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.},
  author       = {Molisch, Andreas and Miyake, M and Zhang, J},
  isbn         = {0-7803-7978-0},
  keyword      = {frequency hop communication,multi-access systems,spread spectrum communication,broadband networks},
  language     = {eng},
  pages        = {541--544},
  series       = {IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2003. PACRIM.},
  title        = {Time hopping versus frequency hopping in ultrawideband systems},
  url          = {http://dx.doi.org/10.1109/PACRIM.2003.1235838},
  year         = {2003},
}