Patent ID: 8824590
Filing Date: 2014-09-02
Classification: H04L

Abstract:
1. A layered transmission apparatus for transmitting information regarding a plurality of layers, the apparatus comprising: a plurality of coding units, which correspond to each of the plurality of layers, configured to code an information bit of a corresponding layer to generate code bits; a plurality of bit interleaving units, which correspond to each of the code bits, configured to bit-interleave a corresponding code bit to generate interleaved bits; a modulation unit configured to classify the plurality of layers into a plurality of layer groups, and modulate the plurality of the interleaved bits corresponding to each of the layer groups to generate a modulation symbol of each of the layer groups, wherein the modulation symbol is a multi-dimensional symbol which is generated by combining a plurality of symbols corresponding to the interleaved bits; a gain control unit configured to adjust an interval between a constellation of the modulation signal of each of the layer groups by controlling a gain of the modulation symbol of each of the layer groups; and an adding unit configured to add the gain-controlled modulation symbols by adding a first part of the gain-controlled modulation symbols of the plurality of layer groups together to generate a first transmission symbol and adding a second part of the gain-controlled modulation symbols of the plurality of layer groups together to generate a second transmission symbol.