Cross-polarization interference canceller

Details Cross-polarization interference canceller Cross-polarization interference canceller

1992-09-22

1993-08-31

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including polarized signal communication transmitter or...

455295, 455296, H01Q 2106, H01Q 2124

Patent

active

052413209

ABSTRACT:
In a cross-polarization interference canceller employing a transversal filter, when a tap coefficient of the transversal filter is generated by averaging resultant values of correlation between a residual error component and a data polarity signal of a different polarized wave, a moving average derived by averaging with a sum of most recent given number of bits of correlation results, is employed. Even when offset is caused on the correlation results due to random characteristics of the received signal, the offset cannot be accumulated to allow derivation of the true tap coefficient since the sum of most recent given number of bits of correlation results is used.

REFERENCES:
patent: 4992798 (1991-02-01), Nozue et al.
patent: 5023620 (1991-06-01), Matsuura
patent: 5068667 (1991-11-01), Mizoguchi
Japanese Patent Application First Provisional Publication JP-A-300729/89.
"Digital Signal Processing", The Institute of Electronics, Information, Communication Engineers (IEICE), in Japan, 1978, Section 11.

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