Receiver for effecting synchronous demodulation

Details Receiver for effecting synchronous demodulation Receiver for effecting synchronous demodulation

1981-02-20

1984-03-06

Malzahn, David H.

Boots, shoes, and leggings

G06F 1531

Patent

active

044357737

ABSTRACT:
In a receiver for synchronously demodulating real bandpass signals and including circuit elements connected for removing noise, equalizing the signals, converting the resulting signals to analytical signals, shifting the signals in phase, sampling the signals at the signal element timing rhythm, and interrogating the sampled signals, there is provided a single pair of filters serving to perform both the equalizing and converting functions.

REFERENCES:
patent: 4062060 (1977-12-01), Nussbaumer
patent: 4263671 (1981-04-01), Chiu et al.
patent: 4285045 (1981-08-01), Tamori et al.
Leuthold, "A New Concept for the Realization of Data Modems with Integrated Digital Filters and Modulators" Philips Res. Rept. 27 No. 3, Jun. 1972, pp. 223-243.
Roy et al., "Digital Low-Pass Filtering Using the Discrete Hilbert Transfom" IEEE Trans. on Acoustics, Speech and Signal Processing, vol. ASSP-26, No. 5, Oct. 1978, pp. 465-467.
Murano et al., "LSI Processor for Digital Signal Processing & its Application to 4800 Bit/s Modem" IEEE Trans. on Communications, vol. Com-26, No. 5, May 1978, pp. 499-506.
Puckette, "Bucket-Brigade Tranversal Filter" IEEE Trans. on Communications vol. Com-22, No. 7, Jul. 1974, pp. 926-934.
Ibrahim et al. "Double-Split-Electrode Transversal Filter for Telecommunication Applications" IEEE J. of Solid-State Circuits, vol. SC-14, No. 1, Feb. 1979, pp. 80-84.
Schirm IV, "Multiplier-Accumulator Application Notes" TRW LSI Products El Segundo, CA. Jan. 1980, pp. 1-14.
Akashi et al., "A High Performance Digital QAM 9600 bit/s Modem" NEC Research and Development, No. 45, Apr. 1977, pp. 38-49.
Van Gerwen et al., "Microprocessor Implementation of High-Speed Data Modems" IEEE Trans. on Communications vol. Com-25, No. 2, Feb. 1977, pp. 238-250.
Bedrosian "Normalized Design of 90.degree. Phase-Difference Networks" IRE Trans. on Circuit Theory Jun. 1960, pp. 128-136.
Kammeyer et al., "Ein Flexibles Experimentiersystem fur die Datenubertragung im Fernsprechbereich" Frequenz 33, No. 5, pp. 141-145 and No. 6, pp. 165-172; 1979.
Gockler et al., "Zum Entwurf Transversaler Filterpaare unter Berucksichtigung von Forderungen im Frequenz-und Zeitbereich" AEG-Telefunken Scientific Reports, vol. 53, 1980, Nos. 4-5, pp. 154-160.
Schenk "Methoden zur Verbesserung des Ubertragungsverhaltens beim Einsatz von digitalen Entzerrern und Impulsformern" Archives for Electronics and Transmission Techniques, vol. 32, pp. 301-307, 1978.
Bennett, "Data Transmission" McGraw Hill Book Co., N.Y., 1965 pp. 96-111 and 201-209.
Haviland et al., "A Cordic Arithmetic Processor Chip" IEEE J. of Solid State Circuits, vol. SC-15, No. 1, Feb. 1980 pp. 4-15.

Affiliated with

Also associated with

Rating

Receiver for effecting synchronous demodulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Receiver for effecting synchronous demodulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiver for effecting synchronous demodulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-744400