Discrete Fourier transform spread orthogonal time frequency space modulation method
US11671300B2 · kind B2 · utility
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Key dates
| Filing date | Jun 16, 2022 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Jun 16, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/26532
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A discrete Fourier transform spread orthogonal time frequency space modulation method comprises the steps of performing DFT preceding processing and delay-Doppler domain mapping processing on the transmit data symbols, OTFS modulator, and performing delay-Doppler domain demapping processing and IDFT decoding processing on a received signal to realize demodulation; compared with the existing waveforms, including OFDM and DFT-s-OFDM, the proposed DFT-s-OTFS can reduce the bit error rate under high Doppler spread and the peak-to-average power ratio of the transmitted signal at the same time.
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