基于改进LU分解的CMMB标准中LDPC编码器设计  

Design of LDPC Encoder in CMMB Based on Improved LU Decomposition

作　　者：张鹏[1] 杨刚[1] 杨霏[1] 刘昌银[1] 

机构地区：[1]中国传媒大学信息工程学院,北京100024

出　　处：《电视技术》2010年第4期33-35,共3页Video Engineering

摘　　要：根据CMMB标准中LDPC码校验矩阵的固有特点,设计了一种基于改进LU分解的高性能编码器,并在Altera公司的EP3C120FPGA上实现了该方案。该编码方案充分合理地利用了校验矩阵的循环特性,节约了大量存储器资源。实验结果表明,该编码器具有存储器消耗少、成本低等优点。According to the inherent characteristics of LDPC codes parity-check matrixes in CMMB standard, a kind of high performance encoder is designed based on improved LU decomposition encoding algorithm. The encoder is implemented on Altera EP3C120 FPGA. It can take full advantages of the cyclic characteristics of the sparse parity-check matrix and reduce dramatically the memory requirements. Experimental results show that the proposed encoder has some advantages, such as less memory consumption and lower cost.

关 键 词：LU分解 LDPC码 编码器 CMMB 

分 类 号：TN911[电子电信—通信与信息系统]