Time hopping versus frequency hopping in ultrawideband systems
(2003) IEEE Pacific Rim Conference on Communications, Computers and signal Processing, PACRIM 2003 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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/600579
- author
- Molisch, Andreas LU ; Miyake, M and Zhang, J
- organization
- publishing date
- 2003
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- frequency hop communication, multi-access systems, spread spectrum communication, broadband networks
- host publication
- 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
- conference dates
- 2003-08-28 - 2003-08-30
- 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
- 2016-04-04 14:09:20
- date last changed
- 2018-11-21 21:18:36
@inproceedings{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}}, booktitle = {{IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2003. PACRIM.}}, isbn = {{0-7803-7978-0}}, keywords = {{frequency hop communication; multi-access systems; spread spectrum communication; broadband networks}}, language = {{eng}}, pages = {{541--544}}, title = {{Time hopping versus frequency hopping in ultrawideband systems}}, url = {{http://dx.doi.org/10.1109/PACRIM.2003.1235838}}, doi = {{10.1109/PACRIM.2003.1235838}}, year = {{2003}}, }