Abstract: With a receiver according to the present disclosure, a phase of the other modulated wave is adjusted so that a relative phase of the other modulated wave to a reference modulated wave is to be minimum and, then, a notch of the reference modulated wave is compensated with a frequency component of the other modulated wave. Thus, with the receiver according to the present disclosure, it is possible to prevent notches generated due to fading, and to improve a communication quality.

Abstract: A receiver (1) includes a frequency finite difference calculator (14) that sets, among a plurality of frequency components constituting a first frequency signal, a frequency component other than frequency components including notches detected by signal-strength finite difference calculators (13_1 and 13_2) as a reference frequency component and calculates a relative phase of a frequency component of a second frequency signal corresponding to the reference frequency component, and a combiner (19) that adjusts, according to a calculation result by a relative-phase calculator, a phase of the second frequency signal and, then, compensates the frequency component including the notch among the plurality of frequency components constituting the first frequency signal with the corresponding frequency component of the second frequency signal.

Abstract: A cross polarization interference cancellation device is applied to a radio communication device in a co-channel transmission system which carries out radio communication by use of auto-polarization waves and hetero-polarization waves with phase orthogonally crossing each other at the same frequency. The cross polarization interference cancellation device includes a first filter of eliminating unwanted components from an auto-polarization signal; a second filter of eliminating unwanted components from a hetero-polarization signal; a cross polarization interference cancellation part which is connected to the second filter so as to generate a cross-polarization interference cancellation signal which is used to eliminate a cross-polarization interference component superimposed on the auto-polarization signal; and an operator of subtracting the cross-polarization interference cancellation signal from the auto-polarization signal passing through the first filter.

Abstract: An object of the present invention is to sufficiently exhibit carrier reproduction performance in a radio device having a transmitter and a receiver and performing radio communication. A phase noise correction circuit provided in the transmitter in the radio device includes: a phase error information acquisition unit that acquires phase error information detected by a receiver of the radio device; and a phase noise correction unit that performs correction of phase noise generated by a local oscillator shared between the receiver and transmitter for a baseband signal upon radio transmission by using the phase error information acquired by the phase error information acquisition unit.

Abstract: A phase noise correction device having a function for accurately detecting a phase noise component and capable of reducing a load on a reception device is provided. A phase noise correction device for correcting a phase noise generated in a local oscillator includes: a division section that divides a signal generated in the local oscillator; a reference signal generation section that generates a signal of the same frequency as that of the divided signal; a phase difference detection section that detects a phase difference between the divided signal and the generated reference signal; and a phase noise correction section that gives a phase rotation to a baseband signal in the direction that cancels the phase noise according to the detected phase difference as a phase noise component.

Abstract: An object of the present invention is to sufficiently exhibit carrier reproduction performance in a radio device having a transmitter and a receiver and performing radio communication. A phase noise correction circuit provided in the transmitter in the radio device includes: a phase error information acquisition unit that acquires phase error information detected by a receiver of the radio device; and a phase noise correction unit that performs correction of phase noise generated by a local oscillator shared between the receiver and transmitter for a baseband signal upon radio transmission by using the phase error information acquired by the phase error information acquisition unit.

Abstract: A phase noise correction device having a function for accurately detecting a phase noise component and capable of reducing a load on a reception device is provided. A phase noise correction device for correcting a phase noise generated in a local oscillator includes: a division section that divides a signal generated in the local oscillator; a reference signal generation section that generates a signal of the same frequency as that of the divided signal; a phase difference detection section that detects a phase difference between the divided signal and the generated reference signal; and a phase noise correction section that gives a phase rotation to a baseband signal in the direction that cancels the phase noise according to the detected phase difference as a phase noise component.