Study of Carrier Tracking for High Dynamic M-ary Spread Spectrum Signals

摘要：

High dynamic condition will cause Doppler shift acutely, then digital carrier loop may fail to track signal and wrong demodulation may occur, For the problem of carrier acquisition and tracking of highdynamic M-ary spread spectrum signals, utilizing the characteristics that the dynamics of the signal can be removed by FIX, and the phase can be tracked precisely by PLL. In this paper, the implementation of the structure adopts the algorithms of crossproduct auto frequency tracking (CPAFC) and FourQuadrant Frequency Discriminator and the digital Costas loop to achieve carrier tracking. Theory analysis and simulation results show that this method can realize the carrier tracking quickly and precisely under high dynamic circumstance.

关键词： high dynamic M-ary spread spectrum carrier tracking CPAFC Costas

作者: Liechao Huang Tianqi Zhang Juan Bai Fangqing Tan

作者单位: Chongqing Key Laboratory of Signal and Information Processing Chongqing University of Posts and Telecommunications Chongqing, China, 40065

会议类型: 国际会议

会议名称: 2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)

会议地点: 上海

会议语种:英文

页码: 271-275

在线出版日期: 2011-10-15（万方平台首次上网日期，不代表论文的发表时间）