Symbol lock detection implemented with nonoverlapping integratio

Details Symbol lock detection implemented with nonoverlapping integratio Symbol lock detection implemented with nonoverlapping integratio

1994-05-29

1995-09-19

Tse, Young

Pulse or digital communications

Receivers

Angle modulation

375340, 329358, H04L 2722

Patent

active

054523311

ABSTRACT:
A symbol lock detector for an incoming coherent digital communication signal which utilizes a subcarrier modulated with binary symbol data, d.sub.k, and known symbol interval T by integrating binary values of the signal over nonoverlapping first and second intervals selected to be T/2, delaying the first integral an interval T/2, and either summing or multiplying the second integral with the first one that preceded it to form a value X.sub.k. That value is then averaged over a number M of symbol intervals to produce a static value Y. A symbol lock decision can then be made when the static value Y exceeds a threshold level .delta..

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