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Design of the Upstream Cable Modem for Symmetric Multimedia Services over HFC Networks  

Cho, Byung Hak (Dept. of Broadcasting & Communication, Korea Information & Communication Polytechnic College)
Publication Information
Journal of Broadcast Engineering / v.10, no.3, 2005 , pp. 401-412 More about this Journal
Abstract
We propose and design the algorithms of symbol timing recovery, carrier recovery, and equalization for the receiver of S-DMT cable modem, which supports more channels and better symmetric mutimedia services over HFC network. We evaluate the performance of the concatenated entire receiving system of 16QAM, 64QAM in the mixed noise channel of AWGN, ISI and impulse. The result of evaluation shows those algorithms work correctly and designed S-DMT receiver has good performance. We also verify the designed system has excellent immunity against impulse noise channel of practical Cable TV networks by the result of simulation with the parameters of impulse internal $\varepsilon$ and noise power $\gamma^{k}$.
Keywords
S-DMT; Cable Modem; HFC; symbol timing recovery; frequency synchronization,;
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18 http://www.cablelabs.com/news_room/PR/01_pr_adv_phy_083101.html