High speed pilot-less sampling frequency acquisition for DMT systems

被引：0
|
作者：
Chang, CC [1 ]
Wang, CK [1 ]
机构：
[1] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 106, Taiwan
来源：
2005 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), VOLS 1-6, CONFERENCE PROCEEDINGS | 2005年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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 performances. 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.
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页码：4895 / 4898
页数：4
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