Apparatus for and method of synchronizing a local oscillator to

Details Apparatus for and method of synchronizing a local oscillator to Apparatus for and method of synchronizing a local oscillator to

1989-08-22

1991-12-17

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

307518, 328 63, H04L 700

Patent

active

050739050

ABSTRACT:
An output of a local oscillator is synchronized to received bits of a digital bit stream by sampling the binary value of each of the received bits several times during each of the received bits, to derive for each received bit a several bit binary word representing the sampled values. A memory is addressed in response to the binary value of the several bit binary word to control the local oscillator synchronization. The synchronized local oscillator controls the sampling times of the plural samples of each of the received bits so that the binary value of the word controls the oscillator synchronization and the sampling times. The addressed word in the memory determines the value of the received bit, controls the oscillator synchronization, and provides indications of sync lock and unit content of each received data bit.

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