发明授权
US5794119A Subscriber frequency control system and method in point-to-multipoint RF
communication system
失效
点对多点射频通信系统中的用户频率控制系统和方法
- 专利标题： Subscriber frequency control system and method in point-to-multipoint RF communication system
- 专利标题（中）： 点对多点射频通信系统中的用户频率控制系统和方法
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申请号： US599406申请日： 1995-11-21
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公开(公告)号： US5794119A公开(公告)日： 1998-08-11
- 发明人: Allan Evans , Horen Chen
- 申请人： Allan Evans , Horen Chen
- 申请人地址： CA Sunnyvale
- 专利权人： Stanford Telecommunications, Inc.
- 当前专利权人： Stanford Telecommunications, Inc.
- 当前专利权人地址： CA Sunnyvale
- 主分类号： H03L7/06
- IPC分类号： H03L7/06 ; H04N5/44 ; H04N7/173 ; H04N7/20 ; H04N21/462 ; H04N21/4782 ; H04Q7/32 ; H04B1/00
摘要：
A frequency control system and method for minimizing frequency drifts in subscriber terminals in a point-to-multipoint system is described enabling the use of low cost oscillators in the Subscriber terminals by measuring the frequency offset of the subscriber terminal's receiver to estimate its oscillator frequency drift which is then used to correct the subscriber terminal's transmitter frequency and also by feedback of a frequency correction from the base station to the subscriber.
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