Invention Grant
- Patent Title: Method for the blind estimation of OFDM modulation parameters according to a maximum likelihood criterion
- Patent Title (中): 根据最大似然准则对OFDM调制参数进行盲估计的方法
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Application No.: US13062672Application Date: 2009-09-14
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Publication No.: US08509331B2Publication Date: 2013-08-13
- Inventor: Abdelaziz Bouzegzi , Pierre Jallon , Philippe Ciblat
- Applicant: Abdelaziz Bouzegzi , Pierre Jallon , Philippe Ciblat
- Applicant Address: FR Paris
- Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
- Current Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
- Current Assignee Address: FR Paris
- Agency: Knobbe Martens Olson & Bear LLP
- Priority: FR0856195 20080915
- International Application: PCT/EP2009/061873 WO 20090914
- International Announcement: WO2010/029172 WO 20100318
- Main IPC: H04K1/10
- IPC: H04K1/10
Abstract:
The present invention relates to a method for blind estimation of at least one parameter of an OFDM signal according to a maximum likelihood (ML) criterion. In one embodiment, the estimation method uses a deterministic maximum likelihood criterion. In another embodiment, the estimation method assumes that the modulation symbols modulating the sub-carriers of the OFDM multiplex are i.i.d. and Gaussian random variables. The estimation of said parameter is carried out while minimizing a cost function depending on the chosen criterion.
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