Open AccessRayleigh‐Quotient and Iterative‐Threshold‐Test‐Based Blind TOA Estimation for IR‐UWB Systems
Author(s) -
Shen Bin,
Zhao Chengshi,
Cui Taiping,
Kwak Kyungsup
Publication year - 2010
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.10.0209.0421
Subject(s) - algorithm , time of arrival , computer science , channel (broadcasting) , signal (programming language) , ultra wideband , noise (video) , impulse (physics) , a priori and a posteriori , electronic engineering , telecommunications , engineering , artificial intelligence , physics , programming language , philosophy , epistemology , quantum mechanics , image (mathematics)
This letter proposes a non‐coherent blind time‐of‐arrival (TOA) estimation scheme for impulse radio ultra‐wideband systems. The TOA estimation is performed in two consecutive phases: the Rayleigh‐quotient theorem‐based coarse‐signal acquisition (CSA) and the iterative‐threshold‐test‐based fine time estimation (FTE). The proposed scheme serves in a blind manner without demanding any a priori knowledge of the channel and the noise. Analysis and simulations demonstrate that the proposed scheme significantly increases the signal detection probability in CSA and ameliorates the TOA estimation accuracy in FTE.