Title :
A novel mapping scheme in non-binary LDPC coded modulation system
Author :
Luo, Chen ; Liu, Keke ; Fei, Zesong ; Kuang, Jingming
Author_Institution :
Sch. of Inf. Sci. & Technol., Beijing Inst. of Technol., Beijing
Abstract :
In this paper, we propose a novel mapping scheme in non-binary LDPC coded modulation system. Contrary to the mapping method in [1], we assign the variable node of less degree to the more significant bits(MSBs) of signal constellation, for the purpose of the balanced protection. Simulation results show that compare to the traditional mapping scheme, the proposed method gives 0.1 dB-0.5 dB performance gain at BER=10-5 without additional complexity.
Keywords :
error statistics; modulation coding; parity check codes; BER; balanced protection; mapping scheme; nonbinary LDPC coded modulation; signal constellation; variable node; Constellation diagram; Error correction codes; Information science; Intensity modulation; Labeling; Modulation coding; Parity check codes; Performance gain; Protection; Signal mapping; UEP; coded modulation; non-binary LDPC code;
Conference_Titel :
Communication Technology, 2008. ICCT 2008. 11th IEEE International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-2250-0
Electronic_ISBN :
978-1-4244-2251-7
DOI :
10.1109/ICCT.2008.4716209
