Digital signal processing device, receiving device, and signal transmitting and receiving system
US9385766B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2013 |
| Grant date | Jul 5, 2016 |
| Priority date | — |
| Expiry date | Jan 10, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2021/0092
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Fourier transform unit (111) performs Fourier transform on a digital signal on a time axis to generate a frequency domain signal which is a signal on a frequency axis. A filter unit (113) equalizes the frequency domain signal in a frequency domain using N first coefficients. An inverse Fourier transform unit (112) performs inverse Fourier transform on the frequency domain signal processed by the filter unit (113) and returns the frequency domain signal to the digital signal on the time axis. That is, the Fourier transform unit (111), the inverse Fourier transform unit (112), and the filter unit (113) compensate for waveform distortion included in the digital signal using an equalization process (that is, frequency-domain equalization (FDE)) in the frequency domain. A first coefficient setting unit (114) sets N first coefficients used by the filter unit (113) using m (provided N>m) second coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.