Title :
Upstream Channel Synchronization for Cable Modem System
Author :
Kim, Youngje ; Ha, Hyunju ; Lee, Junseo ; Oh, Wangrok ; Kim, Whanwoo ; Eungdon Lee ; Song, Yun-Jeong
Author_Institution :
Dept. of Electron. Eng., Chungnam Nat. Univ., Daejeon
Abstract :
The upstream of digital cable modem is a burst mode transmission system, where a burst contains the preamble and data. In this paper, we consider algorithms for the symbol timing, carrier frequency- and phase-offset recovery for the upstream cable modem, that are compliant to DOCSIS 2.0. Several algorithms are tested and verified to find the best algorithm for each of the three recovery blocks, respectively. To fit to the DOCSIS specification, Oerder & Meyr´s is chosen for the timing recovery algorithm, Mengali & Morelli´s is chosen for the carrier frequency-offset recovery algorithm and Cartwright´s is chosen for blind carrier phase recovery. We decide the optimal preamble length for these algorithms and check the error variance. Finally, we show the error performance of the entire system.
Keywords :
hybrid fibre coax networks; modems; synchronisation; telecommunication channels; DOCSIS 2.0; blind carrier phase recovery; burst mode transmission system; carrier frequency-offset recovery; digital cable modem system; phase-offset recovery; symbol timing; timing recovery algorithm; upstream channel synchronization; AWGN; Cable TV; Communication cables; Equalizers; Frequency estimation; Frequency synchronization; Hybrid fiber coaxial cables; Modems; Quadrature phase shift keying; Timing; DOCSIS; cable modem upstream transmission; carrier frequency recovery; carrier phase recovery; data-aided synchronization; symbol timing recovery;
Conference_Titel :
Advanced Communication Technology, The 9th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-131-8
DOI :
10.1109/ICACT.2007.358734
