Pulse or digital communications – Repeaters – Testing
Patent
1983-11-10
1986-08-12
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
375 54, 375102, 329110, H03D 300, H04L 2722
Patent
active
046060510
ABSTRACT:
A modem receiver having receiver control, signal detection, and data demodulation implemented with a single general-purpose integrated circuit microcomputer. Novel multirate digital signal processing techniques are included which provide complete real-time recovery of all data and modem signals in a microcomputer integrated circuit having an architecture not optimized for signal processing applications. The resulting techniques extend to more general signal processing applications which may be implemented by other general-purpose microcomputers, programmed signal processors, or specific dedicated hardware logic. The novel modem receiver includes digital FIR filters, performing quadrature signal detection, and post-demodulation data correction with an all-digital second-order carrier recovery loop.
REFERENCES:
patent: 3568078 (1971-03-01), Pelchat
patent: 3646546 (1972-02-01), Norris
patent: 4027265 (1977-05-01), Kobayashi et al.
patent: 4224575 (1980-09-01), Mosley et al.
patent: 4234957 (1980-11-01), Tracey et al.
patent: 4313202 (1982-01-01), Kameya
patent: 4320345 (1982-03-01), Waggener
Crabtree Steven B.
Sherman James B.
Yedid Harry
Glenny Raymond C.
Safourek Benedict V.
Universal Data Systems, Inc.
LandOfFree
QPSK demodulator with I and Q post-detection data correction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with QPSK demodulator with I and Q post-detection data correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and QPSK demodulator with I and Q post-detection data correction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1948208