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US Patent 7286604 Carrier interferometry coding and multicarrier processing

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Is a
Patent
Patent

Patent attributes

Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7286604
Date of Patent
October 23, 2007
Patent Application Number
10446022
Date Filed
May 27, 2003
Patent Citations Received
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US Patent 12095529 Spread-OFDM receiver
3
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US Patent 11894965 Efficient synthesis and analysis of OFDM and MIMO-OFDM signals
4
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US Patent 11917604 Orthogonal multiple access and non-orthogonal multiple access
5
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US Patent 12022289 Integrated secure device manager systems and methods for cyber-physical vehicles
6
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US Patent 11671299 Wireless communications using flexible channel bandwidth
7
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US Patent 11671151 Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM
8
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US Patent 11677449 Eigensystem optimization in artificial neural networks
9
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US Patent 11700162 Peak-to-average-power reduction for OFDM multiple access
10
...
Patent Primary Examiner
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Emmanuel Bayard
Patent abstract

Carrier Interferometry (CI) codes include families of orthogonal polyphase codes that have no length restrictions and can be used for direct-sequence and multicarrier coding. Quasi-orthogonal CI channel codes simultaneously improve probability-of-error performance and increase throughput. CI filtering, which is based on CI codes, enables filtering and correlation operations via sampling and adding. CI codes simplify transform operations, such as Fourier transforms, by reducing or eliminating complex multiplications. CI filtering may be used to simplify synthesis and analysis functions and allow all physical-layer processing operations to be consolidated into simple sub-carrier selection and weighting operations. Thus, CI processing enables a software-defined baseband processor.

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