Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 25, 2020
Patent Application Number
16027191
Date Filed
July 3, 2018
Patent Citations
Patent Citations Received
Patent Primary Examiner
Patent abstract
An OFDM transmitter spreads original data symbols with a complex-valued spreading matrix derived from a discrete Fourier transform. Spread data symbols are mapped to OFDM subcarriers. Spreading and mapping are configured to produce a transmitted spread-OFDM signal with a low peak-to-average power ratio (PAPR) and orthogonal code spaces. In MIMO systems, the complex-valued spreading matrix can comprise a MIMO precoding matrix, and the code spaces can comprise MIMO subspaces. In Cooperative-MIMO, a combination of low code-space cross correlation and low PAPR can be achieved.
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