Open AccessPreamble‐aided time delay estimation in frequency selective channels for wireless OFDM systems
Author(s) -
Yu Qun,
Lin Haisheng,
Feng Suili,
Li RongLin
Publication year - 2014
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2014.0171
Subject(s) - preamble , orthogonal frequency division multiplexing , overhead (engineering) , computer science , electronic engineering , wireless , delay spread , property (philosophy) , channel (broadcasting) , telecommunications , engineering , fading , operating system , philosophy , epistemology
In this Letter, an improved method for estimating the time delay in preamble‐aided orthogonal frequency division multiplexing systems is presented. It uses a conventional preamble structure and combines cross‐correlation techniques to achieve estimations of time delay and the number of multipaths without any additional overhead. Computer simulations results show that the proposed method is of near‐ideal property in frequency‐selected channels.