System and method for combined predistortion and interference cancellation in a satellite communications system
US8355462B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2009 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Apr 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2637
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a communication system for use with a first source signal and a second source signal. The first source signal is on a first channel and includes M symbols, where M is an integer greater than 1. The second source signal is on a second channel and includes X symbols, where X is an integer greater than 1. The first channel is different from the second channel. The communication system includes a first modulator unit, a second modulator unit and an adder. The first modulator unit can generate a first modulated signal based on the first source signal and includes a first inter-symbol distortion estimating unit and a first stage predistortion unit. The second modulator unit can generate a second modulated signal based on the second source signal and includes a second inter-symbol distortion estimating unit and a predistortion unit. The adder can generate an added signal based on the first modulated signal and the second modulated signal. The first inter-symbol distortion estimating unit can generate a distorted symbol vector based on an estimate of a distortion of the first through (a−1)-th symbols and an estimate of a distortion of the (a+1)-th through M-t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.