Non-coherent sequence detection scheme for satellite-based automatic identification system

Non-coherent sequence detection scheme for satellite-based automatic identification system

Haosu Zhou;Jianxin Wang

【期刊名称】《系统工程与电子技术（英文版）》 【年(卷),期】2017(028)003

【摘要】The satel ite-based automatic identification system (AIS) receiver has to encounter the frequency offset caused by the Doppler effect and the oscil ator instability. This paper proposes a non-coherent sequence detection scheme for the satel ite-based AIS signal transmitted over the white Gaussian noise channel. Based on the maximum likelihood estimation and a Viterbi de-coder, the proposed scheme is capable of tolerating a frequency offset up to 5%of the symbol rate. The complexity of the proposed scheme is reduced by the state-complexity reduction, which is based on per-survivor processing. Simulation results prove that the proposed non-coherent sequence detection scheme has high robustness to frequency offset compared to the relative scheme when messages col ision exists. 【总页数】7页(442-448) 【关键词】

【作者】Haosu Zhou;Jianxin Wang

【作者单位】School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;School of