Theoretical limits on time delay estimation for ultra-wideband cognitive radios

Sinan Gezici, Hasari Celebi, Huseyin Arslan, H. Vincent Poor

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

5 Scopus citations

Abstract

In this paper, theoretical limits on time delay estimation are studied for ultra-wideband (UWB) cognitive radio systems. For a generic UWB spectrum with dispersed bands, the Cramer-Rao lower bound (CRLB) is derived for unknown channel coefficients and carrier-frequency offsets (CFOs). Then, the effects of unknown channel coefficients and CFOs are investigated for linearly and non-linearly modulated training signals by obtaining specific CRLB expressions. It is shown that for linear modulations with a constant envelope, the effects of the unknown parameters can be mitigated. Finally, numerical results, which support the theoretical analysis, are presented.

Original languageEnglish (US)
Title of host publicationProceeedings of The 2008 IEEE International Conference on Ultra-Wideband, ICUWB 2008
Pages177-180
Number of pages4
DOIs
StatePublished - 2008
Event2008 IEEE International Conference on Ultra-Wideband, ICUWB 2008 - Hannover, Germany
Duration: Sep 10 2008Sep 12 2008

Publication series

NameProceeedings of The 2008 IEEE International Conference on Ultra-Wideband, ICUWB 2008
Volume2

Other

Other2008 IEEE International Conference on Ultra-Wideband, ICUWB 2008
CountryGermany
CityHannover
Period9/10/089/12/08

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

Keywords

  • Carrier frequency offset (CFO)
  • Cramer-rao lower bound (CRLB)
  • Dispersed spectrum utilization
  • Time delay estimation
  • Ultra-wideband (UWB) cognitive radio

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  • Cite this

    Gezici, S., Celebi, H., Arslan, H., & Poor, H. V. (2008). Theoretical limits on time delay estimation for ultra-wideband cognitive radios. In Proceeedings of The 2008 IEEE International Conference on Ultra-Wideband, ICUWB 2008 (pp. 177-180). [4653380] (Proceeedings of The 2008 IEEE International Conference on Ultra-Wideband, ICUWB 2008; Vol. 2). https://doi.org/10.1109/ICUWB.2008.4653380