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AssigneeNEC Corporation
InventorTakeshi Yamamoto
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In an automatic equalizer (20) connected to a demodulator section (14) to equalize a demodulated signal into an equalized signal as an output signal, first and second received signals are transmitted in common through a co-channel to the demodulator section. The first and the second received signals have first and second polarizations, respectively. The first and the second received signals are demodulated into first and second demodulated signals which have first and second data signals, respectively. A first equalizer section (31) equalizes the first data signal into a first equalized signal. A transversal filter (18) filters the second data signal into a filtered signal. In order to cancel a cross polarization interference, the subtracter (19) subtracts the filtered signal from the first equalized signal to produce an intermediate signal. In order to cancel an intersymbol interference, a second equalizer section (32) equalizes the intermediate signal into a second equalized signal which is outputted as the output signal.
An automatic equalizer for use in combination with a receiver section comprising a demodulator which demodulates first and second received signals into first and second demodulated signals, respectively, said automatic equalizer being for equalizing said first demodulated signal into an equalized signal to produce said equalized signal as an output signal, said first and said second received signals being transmitted through a co-channel to said receiver section, said first received signal having a first polarization which carries a first data signal, said second received signal having a second polarization which carries a second data signal, and said first and said second demodulated signals having said first and said second data signals, respectively, said automatic equalizer comprising:
Dependencies are inferred from the claim text.