DESIGN OF IRREGULAR LDPC CODE WITH UNEQUAL ERROR PROTECTION PROPERTY AND ITS PERFORMANCE ANALYSIS ON IMAGE TRANSMISSION  

作　　者：Wang Ruihua Yin Liuguo Yu Quan Lu Jianhua 

机构地区：[1]Communication Engineering College, PLA Science and Technology University, Nanjing 210007, China） [2]Department of Electronic Engineering, Tsinghua University, Beijing 100084, China [3]China Electronic Equipment System Engineering Corporation, Beijing 100039, China

出　　处：《Journal of Electronics(China)》2005年第6期658-662,共5页电子科学学刊（英文版）

摘　　要：Based on the property that high degree variable nodes within an irregular LowDensity Parity-Check (LDPC) code have more powerful error-correcting capability than that of low degree variable nodes, a group of irregular LDPC codes with Unequal Error Protection (UEP)property is designed in this letter. Simulation results show that the transmission quality of the image may be effectively improved with this class of irregular LDPC code.Based on the property that high degree variable nod.es within an irregular LowDensity Parity-Check （LDPC） code have more powerful error-correcting capability than that of low degree variable nodes, a group of irregular LDPC codes with Unequal Error Protection （UEP） property is designed in this letter. Simulation results show that the transmission quality of the image may be effectively improved with this class of irregular LDPC code.

关 键 词：Irregular Low-Density Parity-Check （LDPC） code Unequal Error Protection （UEP） Image transmission 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]