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| | CEN 4500C - Framing and Synchronization (Site not responding. Last check: ) |
 | | In order to receive bits in the first place, the receiver must be able to determine how fast bits are being sent and when it has received a signal symbol (usually one bit, but with m-ary signaling, it may be several bits, lg(m) in fact). |
 | | Further, the receiver needs to be able to determine what the relationship of the bits in the received stream have to one another, that is, what the logical units of transfer are, and where each received bit fits into the logical units. |
 | | It is the ratio of data bits per protocol data unit (PDU) to the total size of the PDU, including synchronization, headers, etc. Equivalently, it is the ratio of the time spent actually sending useful data to the time it takes to transfer that data and its attendant overhead. |
| www.cise.ufl.edu /~nemo/cen4500/synch.html (1201 words) |
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