| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-channel communication system capable of improving interference resistance performance without increasing a device cost with a simple circuit structure so as to solve problems that a conventional SS system radio increases the device cost when improving the interference resistance performance because of an increased circuit size, and a conventional ASK (amplitude shift keying) system radio can not achieve high interference resistance performance. SOLUTION: In an ASK multi-channel communication system, a transmitter is provided with a first oscillator 23, a second oscillator 24, a switch 22 for switching outputs of the oscillators 23, 24, and transmits same data at different frequencies at a plurality of times in a frequency band in which a receiver can ASK-receive, and the receiver adopts the data received first. COPYRIGHT: (C)2009,JPO&INPIT
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