|469 - Abstract:|
|The following invention proposes a technology to improve digital modulation spectral efficiency, while keeping high power efficiency. The growing demand for high data point-to-point and point-to-multipoint link in satellite systems can be supported by this. For instance, the coded modulation scheme provides a considerable performance advantage for future satellite multi-media and broadcasting systems. Licence agreements are sought.|
The European Space Agency introduces a class of 16-ary Amplitude and Phase Shift Keying (APSK) coded modulations. The invention optimizes the transmission of digitally modulated signals on non-linear channels. Satellite systems are likely to require higher bit rates, thus extracting as many bits per second as possible from the available bandwidth becomes a critical need. This invention combines coding efficiency with the required coding rate flexibility and simple matching to the demodulator.
Innovations and advantages:
Improving transmission efficiency with good robustness.
- Reducing service cost with minimum energy per bit.
- Enabling faster wireless connection speed and higher data transfer rate than its predecessors.
- Decreasing the bit error rate (BER) due to simple decoder implementation.
- Improving spectral density for high speed satellite links.
Domain of application:
The invention can be applied to radiofrequency communications and broadcasting, which includes applications such as:
- Bi-directional radio communications
- Cell phones
- Wireless networks
- GPS systems
- Garage door openers
- Wireless keyboards and headsets
- Radio receivers
- Satellite and broadcast television.
Another application is in the transmission of digital information over point-to-point channels such as copper wires, optical fibers, wireless communication channels, and storage media.
This invention is essential to both DVB-S2 and DVB-S2X standards.