无线电工程2024，Vol.54Issue(4)：1019-1025,7.DOI:10.3969/j.issn.1003-3106.2024.04.027
采用LDPC信道编码方案的LoRa通信系统
LoRa Communication System Using LDPC Channel Coding Scheme
摘要
Abstract
A LoRa communication system based on LDPC codec as channel coding scheme is proposed.After trade-off,the system uses LDPC code encoding and LLR-BP decoding instead of Hamming codec,which can skip the interleaving process without changing the definition of LoRa core modulation technology and parameters,and make the system have better bit error performance and flexibly support the transmission of long data packets.The simulation results show that under the same coding rate,when the Bit Error Rate(BER)level is 10-3,the LoRa communication system based on LDPC codec as the channel coding scheme can relax the signal-to-noise ratio performance by about 1.5 dB compared with the traditional system,which is true for common SF of LoRa system,so the system can be considered to have certain reference value.关键词
LoRa技术/低密度奇偶校验编码/LLR-BP算法/Chirp调制Key words
LoRa technology/LDPC code/LLR-BP algorithm/Chirp modulation分类
信息技术与安全科学引用本文复制引用
张恩齐,林俊鹏,陈平平..采用LDPC信道编码方案的LoRa通信系统[J].无线电工程,2024,54(4):1019-1025,7.基金项目
国家自然科学基金面上项目(61871132)General Program of National Natural Science Foundation of China(61871132) （61871132）
