RADIO COMMUNICATION SYSTEM
PURPOSE:To eliminate cross polarized interference generated independently in an optional relay section by providing a cross polarized wave interference compensating means to a reception station together with plural relay station applying relaying while keeping the relation of frequency of two polari...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PURPOSE:To eliminate cross polarized interference generated independently in an optional relay section by providing a cross polarized wave interference compensating means to a reception station together with plural relay station applying relaying while keeping the relation of frequency of two polarized waves crossed with each other. CONSTITUTION:A transmission station 1 sends an input signal S1V to a relay station 2 from an antenna 15 by a V polarized wave whose transmission carrier frequency is FV. Moreover, the input signal S1H is sent to the relay station 2 from the antenna 15 by the H polarized wave whose transmission carrier frequency is FH. Then the carrier of V, H polarized waves sent by the relay station 2 has the same frequency as the frequency of the signal received from the transmission station 1. The reception station 3 is provided with cross polarized wave interference compensation devices 36V, 36H. The cross polarized wave interference compensation device 36V eliminates the interference component from the H polarized wave included in the signal of V polarized wave and the cross polarized wave interference compensation device 36H eliminates the interference component from the V polarized wave included in the signal of H polarized wave. The demodulators 35V, 35H demodulate the signal eliminated with the interference component and generate respectively the output signals S3U, S3H. |
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