Zero tail and unique word based waveforms for DFT-s OFDM and OFDM
US10608858B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2019 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Mar 5, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2605
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and systems for operation in a wireless network are provided, the methods including receiving modulated data symbols and zeros in a frequency-domain, and mapping in the frequency-domain the modulated data symbols and zeros in an interleaved manner to sub-carriers within a resource allocation. The methods and systems further include generating a time-domain data signal based on the mapped sub-carriers, and generating a time domain cancellation signal by sign inverting and repeating a predetermined number of time-domain samples at a tail portion of the data signal. The methods and systems further include combining the time-domain data signal and the time domain cancellation signal to generate an exact zero tail data signal such that the exact zero tail data signal has a zero tail length equal to the predetermined number of time-domain samples, and transmitting the exact zero tail data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.