摘要
为了与LTE-Advanced系统中信道编码协议兼容,对准循环LDPC码进行了低码率扩展,并在此基础上对其译码算法进行了改进.通过搭建LDPC码在OFDM系统中的仿真链路模型,在Matlab仿真平台上,对最小和译码算法进行了修正和改进,通过对比不同修正值下的译码性能,得到一种适合LTE-Advanced系统的LDPC码译码方案.
In order to be compatible with the channel code in the LTE-Advance systems, this paper expanded the QC-LDPC code and put forward one optimize encoding algorithm. Through the building of LDPC codes in the OFDM system simulation link and simulation by Matlab tool, modified min sum-product decoding algorithm. Comparing the different modified value in different performance, got an LDPC decoding scheme for LTE-advance system.
出处
《哈尔滨商业大学学报（自然科学版）》
CAS
2013年第2期185-189,共5页
Journal of Harbin University of Commerce：Natural Sciences Edition
