发明授权
- 专利标题: Digital radio communication apparatus and method of controlling the same
- 专利标题(中): 数字无线通信装置及其控制方法
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申请号: US09052388申请日: 1998-03-31
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公开(公告)号: US06307879B1公开(公告)日: 2001-10-23
- 发明人: Yukihiro Moriyama
- 申请人: Yukihiro Moriyama
- 优先权: JP9-299593 19971017
- 主分类号: H04B138
- IPC分类号: H04B138
摘要:
A radio communication apparatus includes: a transmission unit for transmitting a radio wave; and a reception unit for receiving a radio wave and demodulating the same, the reception unit including: an analog filter provided in a first stage of the reception unit; a digital filter provided in a second stage of the reception unit so as to compensate a characteristic of the analog filter by having a filter characteristic of the digital filter varied by varying a tap factor; a test signal generation unit for supplying a test signal to the reception unit; an error state detection unit for detecting an error based on a digital demodulated signal derived from the test signal; and a tap factor setting unit for temporarily setting a tap factor of the digital filter that reduces a level of the error. Supplying of the test signal and detecting of the error are repeated until a target tap factor that minimizes the error is determined, whereupon the target tap factor is set in the digital filter.
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