LAN Physical Layer Signaling, Encoding, and Transmission Media
The purpose of signaling and encoding schemes is twofold. First, the schemes provide methods to allocate the available transmission medium's bandwidth. Second, they provide a signal formatting language of sorts so that signals transmitted across the medium will have some actual meaning and can be interpreted logically. Two types of signaling exist: baseband and broadband. LAN transmission protocols commonly utilize baseband signaling schemes, whereas WAN transport protocols tend toward broadband signaling.
With broadband signaling, the bandwidth of the transmission medium is partitioned into different frequency ranges. Each frequency range represents a different channel, each of ...
Get Understanding the Network: A Practical Guide to Internetworking now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
