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Low-Complexity Estimation Method of Cyclic-Prefix Length for DMT VDSL System
Hui-Chul WON Gi-Hong IM
IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Transmission Systems and Transmission Equipment for Communications
cyclic prefix (CP), discrete multitone (DMT), very high-speed digital subscriber line (VDSL), intersymbol interference (ISI),
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In this letter, we propose a low-complexity estimation method of cyclic-prefix (CP) length for a discrete multitone (DMT) very high-speed digital subscriber line (VDSL) system. Using the sign bits of the received DMT VDSL signals, the proposed method provides a good estimate of CP length, which is suitable for various channel characteristics. This simple estimation method is consistent with the initialization procedure of T1E1.4 multi-carrier modulation (MCM)-based VDSL Standard. Finally, simulation results with VDSL test loops are presented.