发明授权
US5732341A Method and apparatus for increasing receiver immunity to interference
失效
增加接收机抗干扰能力的方法和装置
- 专利标题: Method and apparatus for increasing receiver immunity to interference
- 专利标题(中): 增加接收机抗干扰能力的方法和装置
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申请号: US522467申请日: 1995-08-31
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公开(公告)号: US5732341A公开(公告)日: 1998-03-24
- 发明人: Charles E. Wheatley, III
- 申请人: Charles E. Wheatley, III
- 申请人地址: CA San Diego
- 专利权人: QUALCOMM Incorporated
- 当前专利权人: QUALCOMM Incorporated
- 当前专利权人地址: CA San Diego
- 主分类号: H04B1/06
- IPC分类号: H04B1/06 ; H03G1/00 ; H03G3/30 ; H04B20060101 ; H04B1/10 ; H04B1/16 ; H04B1/18 ; H04B1/40 ; H04B1/7075 ; H04B1/7097 ; H04B3/06 ; H04B7/005 ; H04B7/26 ; H04B15/00 ; H04G3/20
摘要:
The process of the present invention adjusts the input gain by a predetermined amount. The receiver processing measures the gain change in the IF sisal power. If the change is less than the predetermined amount, the CDMA signal and jammers are below the noise floor and, therefore, the gain is increased. If the IF signal power change is equal to the predetermined amount, the CDMA signal is above the noise floor and the interference is minimal. Therefore, in this case, gain adjustment is not necessary, but increasing gain will improve sensitivity. If the IF signal power change is greater than the predetermined amount, the interference is evident and the gain is reduced to reduce the intermodulation products. This process is used until the receiver is operating at the best compromise between interference and noise figure.
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