Optimization technique for layered modulation
A method and apparatus for optimizing a system for transmitting a layered modulated signal is disclosed. The method comprises the steps of defining the system in terms of a set of system parameters, including an optimal power separation S between a power of a first modulation layer and a power of a second modulation layer and a required system carrier-to-noise ratio (CNRS), determining an optimal power separation S to minimize the error rate of a lower layer modulated signal BERL, and selecting the remaining system parameters in the set of system parameters using the determined optimal power separation S.
The DirecTV Group, Inc.
H H H H
H04L H04L H04L H04W
inventional inventional inventional inventional
Guangcai William C. Weizheng Tung-Sheng Ernest C. Joseph
Zhou Lindsey Wang Lin Chen Santoru