| 摘要 |
PROBLEM TO BE SOLVED: To aim to provide a wireless device with a function of removing a noise emitted from its own device and a noise removing method with high accuracy, relatively inexpensively, and without taking specific measures against other circuits within the device. SOLUTION: A frequency conversion to a baseband signal is performed to a reception signal received by a first antenna performing a communication and a noise signal which a second antenna performing a noise reception receives. The respective baseband signals are converted into a digital reception signal and a digital noise signal. A difference between the two digital signals is stored in a memory as noise difference information. A difference between the digital noise signal newly received and the noise difference information stored in the memory is subtracted from the digital reception signal newly received, and a noise is removed. COPYRIGHT: (C)2005,JPO&NCIPI
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