电讯技术2016，Vol.56Issue(10)：1140-1146,7.DOI:10.3969/j.issn.1001-893x.2016.10.014
基于CRC纠错与迭代干扰消除的星载AIS接收机
A Satellite-borne AIS Receiver Based on CRC Error Correction and Iterative Interference Cancellation
摘要
Abstract
In order to improve the receiving performance of satellite-borne automatic identification system ( AIS) ,this paper presents an AIS receiving scheme based on 4-bit cyclic redundancy check( CRC) error correction and iterative interference cancellation. For multi-path signal collisions of satellite-borne AIS, the CRC error types of the system are firstly analyzed and the error correction method by means of bit rever-sal is adopted to correct the binary sequence;then the sequence is reconstructed to the AIS signals which will be eliminated by iterative interference cancellation method and the remaining signals are input to the system as the input signal again. Simulation results show that compared with traditional non-CRC correc-tion system,the 4-bit CRC error correction and iterative interference cancellation scheme can provide 1~2 dB gain for two collided AIS signals,which has important significance to the performance improvement of satellite-borne AIS.关键词
星载AIS/Viterbi解调/信号重构/CRC纠错/迭代干扰消除Key words
satellite-borne AIS/Viterbi demodulation/signal reconstruction/CRC error correction/iteration interference cancellation分类
信息技术与安全科学引用本文复制引用
孙乾,张陶盛,李洪星,杨峰,钱良,丁良辉..基于CRC纠错与迭代干扰消除的星载AIS接收机[J].电讯技术,2016,56(10):1140-1146,7.基金项目
名称:国家自然科学基金资助项目(61301117,61420106008)Foundation Item:The National Natural Science Foundation of China(No.61301117,61420106008) （61301117,61420106008）
