Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1985-02-21
1986-08-12
Bookbinder, Marc E.
Pulse or digital communications
Spread spectrum
Direct sequence
343362, 375 14, 455 60, 455295, 455306, H04B 110
Patent
active
046060545
ABSTRACT:
A canceller for eliminating the cross-polarization interference in incoming signals having polarizations which are orthogonal to one another is proposed. Each incoming signal is coupled to an associated adaptive filter. Each filter output is then summed with an associated one of the incoming signals which has a polarization orthogonal to that of the filter input signal. The signal sums formed are the canceller output signals. Adjustment of the adaptive filters so as to cancel the cross-polarization interference in each received signal is made in response to the incoming signals and the canceller output signals at selected times. During these times, circuitry for adjusting the adaptive filters examines spectral tones formed by the incoming signals and the canceller output signals.
REFERENCES:
patent: 3735266 (1973-05-01), Amitay
patent: 4112370 (1978-09-01), Monsen
M. L. Steinberger, "Design of a Terrestrial Cross Pol Canceler", 1982 IEEE, pp. 2B.6.1-2B.6.5.
Y. Bar-Ness, "Cross-Coupled Boot-Strapped Interference Canceler", 1981 IEEE, pp. 292-295.
D. H. Brandwood, "Cross-Coupled Cancellation System for Improving Cross-Polarisation Discrimination", pp. 41-45.
Amitay Noach
Greenstein Lawrence J.
AT&T Bell Laboratories
Bookbinder Marc E.
Padnes David R.
LandOfFree
Cross-polarization interference cancellation 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, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross-polarization interference cancellation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1948217