发明申请
US20110158361A1 RADIO CHANNEL ANALYZER TO DETERMINE DOPPLER SHIFTS ACROSS MULTIPLE FREQUENCIES OF A WIDEBAND SIGNAL
有权
无线电频道分析仪用于确定宽带信号的多个频率的多普勒频移
- 专利标题: RADIO CHANNEL ANALYZER TO DETERMINE DOPPLER SHIFTS ACROSS MULTIPLE FREQUENCIES OF A WIDEBAND SIGNAL
- 专利标题(中): 无线电频道分析仪用于确定宽带信号的多个频率的多普勒频移
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申请号: US12650201申请日: 2009-12-30
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公开(公告)号: US20110158361A1公开(公告)日: 2011-06-30
- 发明人: Paul W. Dent , Leonid Krasny
- 申请人: Paul W. Dent , Leonid Krasny
- 主分类号: H04B7/10
- IPC分类号: H04B7/10
摘要:
A receiver and receive processing method described herein improves the accuracy of channel estimates by correcting for the assumption that the Doppler shift (or rate-of-change-of-delay) stays constant for each frequency within a signal bandwidth of a received signal. To that end, a receiver according to the present invention comprises a channel processor having multiple processing units. A first processing unit processes reference values (e.g., pilot signals) received for each of a plurality of frequencies within a signal bandwidth at a plurality of different signal times (or the complex propagation channel coefficients estimated therefrom) to determine a set of complex wave amplitudes either for each of multiple frequencies in the signal bandwidth or for each of the different signal times. A second processing unit subsequently processes the complex wave amplitudes to determine complex scattering coefficients, where each complex scattering coefficient corresponds to a respective scattering object in the wireless communication channel.
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