Method and apparatus for discriminating synchronous or asynchron

Details Method and apparatus for discriminating synchronous or asynchron Method and apparatus for discriminating synchronous or asynchron

1997-06-27

2000-07-04

Tse, Young T.

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

714789, 714795, H04L 2706

Patent

active

060849258

ABSTRACT:
A method and apparatus for discriminating synchronous or asynchronous states of Viterbi decode data, by performing independent trace-back of the survival path of the received Viterbi decode data, including the steps of: tracing back independently reception data at respective initial states on the basis of trellis metrics from a different initial state value; and comparing a state value with other state values at every cycle, and determining that the data is in a synchronous state, if the state value is identical to the other state values at a cycle, or determining that the data is in an asynchronous state, if not.

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The Transactions of the Institute of Electronics and Communication Engineers of Japan, vol. No. 5, pp. 623-630.
Synchronisation etc. by Dai-II Oh and Sun-Young Hwang, Electronics Letters, Vo. 32, No. 13 pp. 1173-75 Jun. 20, 1996.

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