Lower complexity layered modulation signal processor
US7512189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2003 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Jan 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0061
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for transmitting and receiving a coded signal having an upper layer signal and a lower layer signal is disclosed. The method comprises the steps of combining the upper layer signal and the lower layer signal, encoding the combined upper layer signal and lower layer signal, delaying the upper layer signal, modulating the delayed upper layer signal, modulating the lower layer signal, transmitting the delayed upper layer signal and transmitting the lower layer signal. The apparatus comprises an encoder, for encoding a combined upper layer signal and lower layer signal, a delay, communicatively coupled to the encoder, for delaying the upper layer signal, a first modulator, for modulating the delayed upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter, communicatively coupled to the second modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.