Invention Grant
- Patent Title: Phase noise canceling OFDM receiver
- Patent Title (中): 相位噪声消除OFDM接收机
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Application No.: US11251515Application Date: 2005-10-14
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Publication No.: US07733993B2Publication Date: 2010-06-08
- Inventor: Lars Lindh
- Applicant: Lars Lindh
- Applicant Address: FI Espoo
- Assignee: Nokia Corporation
- Current Assignee: Nokia Corporation
- Current Assignee Address: FI Espoo
- Agency: Harrington & Smitch
- Main IPC: H03D1/04
- IPC: H03D1/04

Abstract:
A receiver includes, in series, at least one receive antenna, a buffer, and arithmetic logic block, a symbol detector, and a phase noise estimator. A further feedback loop couples an output of the phase noise estimator to an input of the arithmetic logic block for providing an estimate of phase noise. The buffer is for storing the received signal. The arithmetic logic block, such as a multiplier, is for removing the estimate of phase noise, received via the feedback loop, from the buffered signal. The symbol detector is for estimating a symbol from the output of the arithmetic logic block. The phase noise estimator estimates phase noise from two inputs received from the symbol detector: the estimated symbol and the remainder signal. Preferably, the phase noise estimator performs an IFFT on these two inputs and Kalman filters the result. Iteratively estimating the phase noise improves precision substantially.
Public/Granted literature
- US20070086533A1 Phase noise canceling OFDM receiver Public/Granted day:2007-04-19
Information query
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