Download Delivering Internet Connections over Cable: Breaking the by Mark Laubach, Stephen Dukes, David Farber PDF

By Mark Laubach, Stephen Dukes, David Farber

"The instantly scoop on cable and the net from authors who understand the evidence. there's no greater source."–Vinton Cerf Here’s your probability to benefit from the specialists why cable is quickly outpacing competing applied sciences within the high-speed web marketplace. even if you’re drawn to integrating cable prone into your community or simply are looking to comprehend what the broadband hype is all approximately, this e-book deals an easy-to-understand but systematic account of all features of the expertise, from cable modems to the evolving broadband entry of the long run. placing to relaxation questions about safety and caliber of carrier that plague this much-contested undefined, providing net Connections over Cable positive aspects the cable operator’s viewpoint on a variety of very important subject matters.

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Extra info for Delivering Internet Connections over Cable: Breaking the Access Barrier

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General Electric introduced its first compression technology for channel expansion. 1986. HBO began to scramble its signal full time, thereby preventing backyard dish owners to receive without paying. 1987. With the introduction of the 550MHz system, channel capacity rose to 80. Jim Chiddix, Chief Engineer at American Television and Communications Corporation in Denver and others, demonstrate fiber optic system to the NCTA engineering committee. Their effort laid the groundwork for the future HFC systems.

An upgrade to HFC means an upgrade to two-way enabled plant. The HFC system is not a digitally modulated system. The technique for modulating information on and off the optical fiber in an HFC plant involves amplitude modulation (AM). The entire broadband downstream passband is modulated onto the fiber and demodulated at the fiber node— essentially, RF to optical and back to RF in a straightforward process. Upstream, the passband is typically 200MHz, and the same RF-to-optical to RF methodology is used as in the downstream.

Located along feeder cables are taps. Taps connect the drop lines from individual subscriber homes to the cable system. Taps are located either high up on telephone poles or wires or in locked cabinets. 3). The drop cable runs from the tap to the subscriber’s home or apartment. The cable is owned, installed, and serviced by the cable operator. 3 Subscriber drop. also called a grounding block. This block is connected to an earth ground to provide lightning protection. A good-quality ground is required.

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