Computer Science - Networking - Discussion
Discussion Forum : Networking - Section 5 (Q.No. 1)
1.
In a synchronous modem, the receive equalizer is known as
Discussion:
1 comments Page 1 of 1.
Vana.tatarao said:
1 decade ago
Synchronous, 4800 bps modem that uses 8-DPSK.
Each symbol is a tri-bit and duration of each symbol is 0.625 ms.
4-phase idle code: Sequences through four of the eight possible shifts allows receiver to recover carrier and clock timing information rapidly.
4-phase test word: Allows adaptive equalizer in the receive modem to adjust to its final settings.
8-phase initialization period: Prepares the descrambler circuits for 8-phase operation.
The entire training sequence requires 48.75 ms (=78*?).
Each symbol is a tri-bit and duration of each symbol is 0.625 ms.
4-phase idle code: Sequences through four of the eight possible shifts allows receiver to recover carrier and clock timing information rapidly.
4-phase test word: Allows adaptive equalizer in the receive modem to adjust to its final settings.
8-phase initialization period: Prepares the descrambler circuits for 8-phase operation.
The entire training sequence requires 48.75 ms (=78*?).
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