Coherent detection for QPSK modulation

Details Coherent detection for QPSK modulation Coherent detection for QPSK modulation

1990-12-17

1991-10-15

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

329306, H04L 2722

Patent

active

050581368

ABSTRACT:
The .pi./4-QPSK coherent detector of the present invention has a vector input and an output comprising recovered data in bit pair form. The .pi./4-QPSK coherent detector recovers data that has been encoded in an amplitude modulated vector's phase angle. The .pi./4-QPSK coherent detector detects the .pi./4-QPSK constellation of the incoming modulated signal and outputs the recovered data stream.

REFERENCES:
patent: 3818347 (1974-06-01), Holsinger
patent: 4361894 (1982-11-01), Kurihara et al.
patent: 4843616 (1989-06-01), Hoffmann
patent: 4853943 (1989-08-01), Laws
patent: 4871973 (1989-10-01), Yoshihara

Affiliated with

Also associated with

Rating

Coherent detection for QPSK modulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coherent detection for QPSK modulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coherent detection for QPSK modulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-997117