发明申请
US20070030827A1 Channel estimation in cdma communications systems using both lower power pilot channel and higher power date channel
有权
在使用低功率导频信道和较高功率日期信道的cdma通信系统中的信道估计
- 专利标题： Channel estimation in cdma communications systems using both lower power pilot channel and higher power date channel
- 专利标题（中）： 在使用低功率导频信道和较高功率日期信道的cdma通信系统中的信道估计
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申请号： US10478593申请日： 2001-05-23
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公开(公告)号： US20070030827A1公开(公告)日： 2007-02-08
- 发明人: Wang Rui , Chao Wang , Mohammed El-Tarkhuni , Zhi Ding , Yuri Shinakov , Alexandre Chloma , Mikhail Bakouline , Vitali Kreindeline
- 申请人： Wang Rui , Chao Wang , Mohammed El-Tarkhuni , Zhi Ding , Yuri Shinakov , Alexandre Chloma , Mikhail Bakouline , Vitali Kreindeline
- 国际申请： PCT/RU01/00187 WO 20010523
- 主分类号： H04B7/216
- IPC分类号： H04B7/216
摘要：
An iterative arrangement of channel estimator (12), a Kalman filter unit (14), and a soft demodulator (16) is provided for producing an estimate of complex gain of a CDMA communications channel carrying data and pilot channels, and demodulated data of the data channel. An initial channel estimate is produced by the estimator (12) using only the low-power pilot channel. This later is improved by the iterative process using the data channel. The complex gains is represented by a sum of sinusoidal signals with different frequencies and randomly variable amplitude and phase.
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