Clock signal recovery system for communication systems using qua

Details Clock signal recovery system for communication systems using qua Clock signal recovery system for communication systems using qua

1996-01-26

1998-09-01

Chin, Stephen

Pulse or digital communications

Receivers

Angle modulation

375329, 375359, H04L 2722

Patent

active

058021132

ABSTRACT:
A data communication receiver includes conventional means for receiving and demodulating a synchronous pulse amplitude modulated signal to provide baseband I and Q signals. A pair of absolute value generators process the baseband I and Q signals to provide absolute value I and Q signals which are combined to form a combined I and Q signal. The combined I and Q signal is applied to a third absolute value generator, the output of which is filtered by a baud rate or higher rate with a low order filter to produce a recovered clock signal.

REFERENCES:
patent: 5001729 (1991-03-01), Tjahjadi et al.
patent: 5307378 (1994-04-01), Norimatsu
patent: 5463664 (1995-10-01), Nakaya

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