High speed pilot-less sampling frequency acquisition for DMT systems
Resource
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Journal
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Pages
-
Date Issued
2005-05
Date
2005-05
Author(s)
Chang, Ching-Chi
Wang, Chorng-Kuang
DOI
N/A
Abstract
This paper presents a sampling frequency offset estimation in time domain for discrete multitone (DMT) systems. Cyclic prefix (CP) enables this estimation without pilots. The proposed algorithm realizes sampling frequency estimation on each sample within the last period where the CP copied from. The sampling-rate iteration method markedly improves acquisition speed and jitter performance. Simulations show that this method can synchronize DMT systems in both AWGN channels and twisted pair copper wires along with non-ideal factors. Practical examples of the very-high bit-rate digital subscriber lines (VDSL) are used to illustrate results.
Type
journal article
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