发明授权
US5548616A Spread spectrum radiotelephone having adaptive transmitter gain control
失效
具有自适应发射机增益控制的扩频无线电话机
- 专利标题: Spread spectrum radiotelephone having adaptive transmitter gain control
- 专利标题(中): 具有自适应发射机增益控制的扩频无线电话机
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申请号: US303619申请日: 1994-09-09
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公开(公告)号: US5548616A公开(公告)日: 1996-08-20
- 发明人: Lars H. Mucke , Jarmo Heinonen
- 申请人: Lars H. Mucke , Jarmo Heinonen
- 申请人地址: FIX Salo
- 专利权人: Nokia Mobile Phones Ltd.
- 当前专利权人: Nokia Mobile Phones Ltd.
- 当前专利权人地址: FIX Salo
- 主分类号: H03G3/30
- IPC分类号: H03G3/30 ; H04B7/005 ; H04L27/04
摘要:
This invention teaches a method, and circuits that operate in accordance with the method, for adaptively controlling the transmitted power of a CDMA transmitter (50, 102). The method includes the steps of: (a) presetting a register, such as a counter (112), with an estimate of a maximum transmitter gain signal, the counter having an count output that is a representation of a maximum transmitter gain signal (TX max); (b) deriving a transmitter gain signal (TX gain) from a received CDMA signal; (c) comparing TX max to TX gain and, if TX gain is greater than TX max, (d) applying a gain control signal to the transmitter that is derived from TX max, and (e) enabling the counter to increase its count; else, if TX gain is less than TX max, (f) applying a gain control signal to the transmitter that is derived from TX gain, and (g) disabling the counter from increasing its count.
公开/授权文献
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