Invention Grant
- Patent Title: Channel estimation of multi-carrier signal with selection of time or frequency domain interpolation according to frequency offset of continuous pilot
- Patent Title (中): 根据连续导频的频率偏移选择时域或频域插值的多载波信号的信道估计
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Application No.: US12523822Application Date: 2008-01-15
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Publication No.: US08149947B2Publication Date: 2012-04-03
- Inventor: Yann Casamajou
- Applicant: Yann Casamajou
- Applicant Address: NL Eindhoven
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP07290122 20070129
- International Application: PCT/IB2008/050130 WO 20080115
- International Announcement: WO2008/093253 WO 20080807
- Main IPC: H04B7/02
- IPC: H04B7/02 ; H04K1/10 ; H04L7/00
Abstract:
A method of estimating the transmission channel of a received multi-carrier signal in a mobile environment, by identifying pilots present on carriers of the received multi-carrier signal, which pilots comprise continual pilots, performing channel estimation on the received multi-carrier signal using a time-domain interpolator to give a first interpolator output, and performing channel estimation on the received multi-carrier signal using a frequency-domain interpolator to give a second interpolator output. A frequency offset in a continual pilot is detected, and either the first or second interpolator output is selected based on the detected frequency offset. The invention also relates to a system for estimating the transmission channel of a received multi-carrier signal in a mobile environment.
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