发明名称 ALARM DEVICE AND ALARM GENERATING METHOD USED FOR IT, AND ITS PROGRAM
摘要 <P>PROBLEM TO BE SOLVED: To provide an alarm device that can easily detect interference caused in a wireless communication system and provide a guide to exclude deterioration in communication quality due to the interference. <P>SOLUTION: A band selection circuit 2 selects a signal including a band used by a wireless communication system that is a target from a radio wave received by a reception antenna 10 on the basis of a center frequency and a bandwidth used by the target wireless communication system from an input terminal 11. An interference detection circuit 3 obtains a level of a signal from the band selection circuit 2 and provides an output of it as an interference level signal. An interference judgement circuit 4 compares the interference level signal with an interference level giving effect on the wireless communication system being the target on the basis of an identifier from the input terminal 11 and informs an operator about occurrence of interference through an interference notice circuit 5 when the interference level signal is greater than the interference level. <P>COPYRIGHT: (C)2009,JPO&INPIT
申请公布号 JP2008236768(A) 申请公布日期 2008.10.02
申请号 JP20080098993 申请日期 2008.04.07
申请人 NEC CORP 发明人 OKANOUE KAZUHIRO;YAMAZAKI SHUNTARO
分类号 H04B17/00 主分类号 H04B17/00
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