Data communication receiver and method therein for detecting poo

Details Data communication receiver and method therein for detecting poo Data communication receiver and method therein for detecting poo

1995-12-04

1998-05-19

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

455437, 371 51, H04B 1702

Patent

active

057545863

ABSTRACT:
A data communication receiver (105) for detecting poor signal quality of received signals includes a receiver section (804) for receiving a first signal on a first frequency, the first signal having frames including a synchronization code that includes data symbols associated with expected signal levels. A crossing detector (250) processes absolute symbol errors for a number of data symbols included in the synchronization code of a first frame to generate an error sum value and averages the error sum value with other error sum values previously calculated for other frames to generate a quality value. When the quality value exceeds a threshold quality value, the crossing detector (250) determines that the first signal is of poor quality, and a controller (816) activates the receiver section (804) to scan other frequencies to locate a second frequency on which to receive a second signal.

REFERENCES:
patent: 4829519 (1989-05-01), Scotton et al.
patent: 5170413 (1992-12-01), Hess et al.

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