Abstract: A wireless power transmission system and communication system is disclosed. A wireless power transmission system and communication system according to an embodiment of the present invention comprises: a transmission part which includes a first surface wave antenna, installed in a metal wall, for transmitting and receiving an electromagnetic surface wave flowing along a surface of the metal wall, and a first monopole antenna connected to the first surface wave antenna in parallel; and a reception part which includes at least one of a second monopole antenna and a second surface wave antenna, installed in a space partitioned by the metal wall, for receiving an electromagnetic surface wave flowing along the surface of the metal wall.

Abstract: A wireless power transmission system and communication system is disclosed. A wireless power transmission system and communication system according to an embodiment of the present invention comprises: a transmission part which includes a first surface wave antenna, installed in a metal wall, for transmitting and receiving an electromagnetic surface wave flowing along a surface of the metal wall, and a first monopole antenna connected to the first surface wave antenna in parallel; and a reception part which includes at least one of a second monopole antenna and a second surface wave antenna, installed in a space partitioned by the metal wall, for receiving an electromagnetic surface wave flowing along the surface of the metal wall.

Abstract: A microphone array system including an input unit to receive sound signals using a plurality of microphones; a frequency splitter splitting each sound signal received into a plurality of narrowband signals; an average spatial covariance matrix estimator using spatial smoothing to obtain a spatial covariance matrix for each frequency component of the sound signal, by which spatial covariance matrices for a plurality of virtual sub-arrays, which are configured in the plurality of microphones, are obtained with respect to each frequency component of the sound signal and an average spatial covariance matrix is calculated; a signal source location detector to detect an incidence angle of the sound signal according to the average spatial covariance matrix calculated; a signal distortion compensator to calculates a weight for each frequency component of the sound signal based on the incidence angle of the sound signal and multiply the calculated weight by each frequency component.

Abstract: A microphone array system including an input unit to receive sound signals using a plurality of microphones; a frequency splitter splitting each sound signal received into a plurality of narrowband signals; an average spatial covariance matrix estimator using spatial smoothing to obtain a spatial covariance matrix for each frequency component of the sound signal, by which spatial covariance matrices for a plurality of virtual sub-arrays, which are configured in the plurality of microphones, are obtained with respect to each frequency component of the sound signal and an average spatial covariance matrix is calculated; a signal source location detector to detect an incidence angle of the sound signal according to the average spatial covariance matrix calculated; a signal distortion compensator to calculates a weight for each frequency component of the sound signal based on the incidence angle of the sound signal and multiply the calculated weight by each frequency component.