发明授权
US07529179B1 Joint maximum likelihood estimation of integer carrier frequency offset and channel in OFDM systems
有权
OFDM系统中整数载波频偏和信道的联合最大似然估计
- 专利标题: Joint maximum likelihood estimation of integer carrier frequency offset and channel in OFDM systems
- 专利标题(中): OFDM系统中整数载波频偏和信道的联合最大似然估计
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申请号: US11218809申请日: 2005-09-02
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公开(公告)号: US07529179B1公开(公告)日: 2009-05-05
- 发明人: Jungwon Lee , Dimitrios-Alexandros Toumpakaris , Hui-Ling Lou
- 申请人: Jungwon Lee , Dimitrios-Alexandros Toumpakaris , Hui-Ling Lou
- 申请人地址: BM Hamilton
- 专利权人: Marvell International Ltd.
- 当前专利权人: Marvell International Ltd.
- 当前专利权人地址: BM Hamilton
- 主分类号: H04J11/00
- IPC分类号: H04J11/00
摘要:
An Orthogonal Frequency Division Multiplexing (OFDM) receiver is provided that receives a modulated OFDM signal through a channel. The OFDM receiver includes an RF downconverter that generates a downconverted modulated OFDM signal based on the modulated OFDM signal, an analog-to-digital converter (ADC) that generates digitized OFDM symbols based on the downconverted modulated OFDM signal, a carrier-phase correction module that generates time-domain symbols based on the digitized OFDM symbols, a fast Fourier transform (FFT) module that generates frequency-domain symbols based on the time-domain symbols, and an estimator module that receives the frequency-domain symbols and determines an integer carrier frequency offset (CFO) estimate and a channel estimate and that generates respective integer CFO estimate and channel estimate signals.
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