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

Files

Theoretical_limits_on_time_delay_estimation_for_ultra-wideband_cognitive_radios.pdf (140 KB)

Date

2008-09

Authors

Editor(s)

Advisor

Supervisor

Co-Advisor

Co-Supervisor

Instructor

BUIR Usage Stats
3
views
11
downloads

Citation Stats

  • Share

Series

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. © 2008 IEEE.

Source Title

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

Publisher

IEEE

Course

Other identifiers

Book Title

Keywords

Carrier frequency offset (CFO), Cramer-rao lower bound (CRLB), Dispersed spectrum utilization, Time delay estimation, Ultra-wideband (UWB) cognitive radio, Civil aviation, Cognitive systems, Communication channels (information theory), Control theory, Cramer-Rao bounds, Electric network analysis, Frequency allocation, Frequency bands, Frequency estimation, Modulation, Radio, Radio systems, Sensor networks, Telecommunication systems, Time delay, Wireless telecommunication systems

Degree Discipline

Degree Level

Degree Name

Citation

Permalink

http://hdl.handle.net/11693/26798

Published Version (Please cite this version)

http://dx.doi.org/10.1109/ICUWB.2008.4653380

Collections

Scholarly Publications - Electrical and Electronics Engineering

Language

English

Type

Conference Paper