Method and apparatus for synchronizing a receiver to a transmitt

Details Method and apparatus for synchronizing a receiver to a transmitt Method and apparatus for synchronizing a receiver to a transmitt

1991-12-02

1993-08-31

Kuntz, Curtis

Pulse or digital communications

Spread spectrum

Direct sequence

375113, 455343, H04L 700, H04L 706, H04B 116

Patent

active

052415686

ABSTRACT:
A receiver (200) receives (203) a transmitted signal having a first predetermined signal for indicating a start of a new transmission to the receiver and having a second predetermined signal inserted at periodic sampling time intervals for synchronizing the receiver to the transmitted signal. The receiver (200) synchronizes to the transmitted signal by detecting the first predetermined signal (208) followed by the second predetermined signal (210), and establishing subsequent periodic sampling time intervals therefrom. The receiver (200) conserves power (228) during a second portion of a periodic sampling time interval following a detection of a first portion of the second predetermined signal (210) during a first portion of the periodic sampling time interval. If the receiver (200) does not detect the first portion of the second predetermined signal (210) then the receiver (200) searches for a portion of the first predetermined signal (208) during the second portion of the periodic sampling time interval to determine a possible start of a new transmission.

REFERENCES:
patent: 4518961 (1985-05-01), Davis et al.
patent: 4787095 (1988-11-01), Forth et al.
patent: 4995099 (1991-02-01), Davis
patent: 4996526 (1991-02-01), DeLuca

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