Front end processor for data receiver and nonlinear distortion equalization method
US7142616B2 · kind B2 · utility
4Cited by
2References
25Claims
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Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jul 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/38
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An OFDM baseband signal that has undergone a synchronization carrier modulation or a differential carrier modulation is inputted to a complex signal converter for nonlinear distortion equalization so as to be converted according to the N-th order function conversion characteristics (N>1). Then, nonlinear distortion in the OFDM baseband signal is compensated for. At this time, the following is used as a conversion equation:y(n)=x(n)+Σam(n)xm(n)(m>1)wherein the values of the input signal, the output signal and the coefficient for m-th order distortion equalization at time n are, respectively, x(n), y(n) and am(n).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.