Cross-polarization interference cancellation arrangement for dig

Details Cross-polarization interference cancellation arrangement for dig Cross-polarization interference cancellation arrangement for dig

1984-04-19

1986-03-18

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375102, 455295, H03H 730

Patent

active

045773300

ABSTRACT:
The present invention relates to a cross-polarization cancellation arrangement for digital radio channels wherein the cancellation arrangement comprises a canceller section and an equalizer section in cascade which operate at baseband. The canceller section includes both a main lobe estimator and detection circuits. The estimator provides a preliminary estimate of the main lobe of the pulse response in each of the two received orthogonally polarized signals. The detection circuits take each of the estimator means output signals, relating to each received polarized signal, and generates therefrom error control signals for adaptively updating the main lobe estimate signals from the estimator and also to provide an output signal which is used to cancel the interferer main lobe in the received oppositely polarized signal. The equalizer section then mitigates intersymbol and cross-rail interference in each of the orthogonally received signals.

REFERENCES:
patent: 3735266 (1973-05-01), Amitay
patent: 4090137 (1978-05-01), Soma et al.
patent: 4112370 (1978-09-01), Monsen
patent: 4220923 (1980-09-01), Pelchat et al.
patent: 4283795 (1981-08-01), Steinberger
patent: 4321705 (1982-03-01), Namiki
patent: 4367555 (1983-01-01), Namiki et al.
patent: 4466132 (1984-08-01), Namiki
patent: 4479258 (1984-10-01), Namiki
IEEE Trans. on Comm., vol. COM-24(9), Sep., 1976, "An Automatic Control . . . ", by H. Kannowade, pp. 986-999.
ICC '79, Boston, Mass., Jun., 1981, vol. 3, "A Decision-Directed Network . . . ", by W. J. Weber, III, pp. 40.4.1-40.4.7.
ICC '81, Denver, Colo., Jun., 1981, vol. 3, "Adaptive Receiver for . . . ", by J. Namiki et al, pp. 46.3.1-46.3.5.
ICC '82, Phila., Pa., Jun. 1982, "Design of a Terrestrial Cross Pol Canceler", by M. L. Steinberger, pp. 2B.6.1-2B.6.5.
Globecom '83, San Diego, Ca., Nov., 1983, "Adaptive Cross Polarization . . . ", by M. Kavehrad.

Affiliated with

Also associated with

Rating

Cross-polarization interference cancellation arrangement for dig does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cross-polarization interference cancellation arrangement for dig, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross-polarization interference cancellation arrangement for dig will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2310706