17-5 A study on performances of Multi-level modulation schemes combined with LDPC codes for the advanced satellite broadcasting system

Abstract

NHK is studying the advanced satellite broadcasting system which the Integrated Services Digital Broadcasting for Satellite (ISDB-S) system was improved. This advanced system can make use of the hierarchal transmission scheme using Transmission and Multiplexing Configuration Control (TMCC) signal adopted by the ISDB-S system and its channel capacity can be increased by using multi-level modulation schemes combined with Low Density Parity Check (LDPC) codes. In this paper, we report the LDPC codes we designed which are suitable for the transmission format of the advanced satellite broadcasting system and the computer simulation results of performances under the AWGN channel model.