发明公开
- 专利标题: A METHOD AND AN APPARATUS FOR CLIPPING SIGNALS IN A CDMA SYSTEM
- 专利标题(中): 在CDMA系统中的方法和用于信号限制装置
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申请号: EP00905510.4申请日: 2000-01-25
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公开(公告)号: EP1147633A1公开(公告)日: 2001-10-24
- 发明人: LUNDH, Peter , SKOOG, Göran
- 申请人: Telefonaktiebolaget L M Ericsson (Publ)
- 申请人地址: 126 25 Stockholm SE
- 专利权人: Telefonaktiebolaget L M Ericsson (Publ)
- 当前专利权人: Telefonaktiebolaget L M Ericsson (Publ)
- 当前专利权人地址: 126 25 Stockholm SE
- 代理机构: Bjelkstam, Peter
- 优先权: SE9900297 19990129
- 国际公布: WO0045538 20000803
- 主分类号: H04J13/02
- IPC分类号: H04J13/02 ; H04B1/69
摘要:
In a method and an apparatus for clipping CDMA carriers clipping for each CDMA carrier is performed on separate circuit boards and the clipping circuit has access to information regarding all carriers to be amplified by the same amplifier. Thus, since each carrier is clipped separately from all other carriers fed to the same amplifier, but having knowledge of the other carriers, a malfunction of the circuit board comprising the clipping circuit and/or clipping evaluation logic, will only affect that particular carrier and the other carriers can still be transmitted. Also, since clipping is carried out for each carrier separately, but taking into account information regarding the other carriers to be amplified by the same power amplifier, the clipping can take phase information into account when determining the clipping factor.
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