Method and transmitter for channel coding and modulation in the frequency domain of orthogonal frequency-division multiplexing wireless networks
US9742524B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 2015 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Sep 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0046
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The method comprising: applying, by a transmitter, a Forward Error Correction to an information block to be sent to a receiver and modulating said information block prior to its transmission, wherein the transmitter has knowledge of a channel frequency response seen by the receiver and the applying and modulating are performed at a variable-rate, at the transmitter side, by: transforming the information block into a number of smaller packets denoted as codeblocks fitting the input sizes accepted by the Forward Error Correction; selecting, a set of modulation and coding schemes to be independently applied to each of the codeblocks; including, information about the selected set of modulation and coding schemes within part of physical resources devoted to user data by reserving specific subcarriers and OFDM symbols; and mapping, said information within physical resources devoted to user data and not reserved for said selected set of modulation and coding schemes, first in order of ascending OFDM symbols and then of ascending subcarriers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.