Apparatus and method of transmitting and receiving digital broadcasting

摘要

A method and apparatus for digital broadcast transmission and reception are provided. The apparatus for digital broadcast transmission includes: an encoding unit performing first-encoding of first digital broadcasting data; an encoding unit performing second-encoding of second digital broadcasting data; a hierarchical mapping unit performing hierarchical mapping to an IQ signal, by setting the first-encoded signal as a high priority (HP), and the second-encoded signal as a low priority (LP); and a modulation unit performing orthogonal modulation of the hierarchically mapped IQ signal by a high-order modulation method.