- Frame synchronization
While receiving a stream of framed
data, frame synchronization is the process by which incoming frame alignment signals, "i.e.", distinctive bitsequences (a syncword), are identified, "i.e.", distinguished from data bits, permitting the data bits within the frame to be extracted for decoding or retransmission. This is sometimes referred to as "framing".
A common practice in
telecommunications, for example in T-carrier, is to insert, in a dedicated time slotwithin the frame, a noninformation bit or framing bit that is used for the actual synchronizationof the incoming data with the receiver. In a bit stream, framing bits are used in determining the beginning or end of a frame. They occur at specified positions in the frame, do not carry information, and are usually repetitive.
If the transmission is temporarily interrupted, or a
bit slipevent occurs, the receiver must re-synchronize.
Source: includes material from
Federal Standard 1037Cin support of MIL-STD-188
* [http://www.ulyssix.com Telemetry Ground Station Processing Electronics telemetry link ]
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