Method to provide increased robustness against noise and interference in wireless communications, a transmitter and computer program products thereof
US10778499B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2018 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jan 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/366
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method to provide robustness against noise and interference in wireless communications, a transmitter and computer program products, involving sending to a receiver (13), through a wireless channel (12), information using a constant-envelope waveform with complex baseband representation of the form s[n]=Ac exp{jϕ[n]}. The phase ϕ[n] following the expression and the wireless channel has an Additive White Gaussian Noise component and flat-fading conditions, wherein the transmitter (110) calculates a FFT length, N, and a number of active positive subcarriers, Na,FM+, needed in order to have a given improvement in the signal to noise ratio at the active positive subcarriers of the instantaneous frequency spectrum containing the information; calculates a cutoff subcarrier k0 needed to overcome Doppler, phase noise and carrier frequency offset impairments at the receiver side, and generates a complex baseband signal waveform of the form s[n]=Ac exp{jϕ[n]} carrying information with the FFT length, number of active positive subcarriers and cutoff subcarrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.