改进的FFT单边带BOCCos(15,2.5)捕获及抗多径算法

Modified Sideband BOCCos(15,2.5) Acquisition and Multipath Rejection Technique Based on FFT

比较现有各种BOC信号同步算法的特点及优缺点,提出一种适用于BOCCos(15,2.5)信号同步的方法。对采用的单边带方法进行改进,用FFT代替滤波器,降低实现难度且有利于软件接收机的实现。将消除多径效应的HRC方法应用于BOCCos(15,2.5)信号,取得良好的抗多径效果。采用Monter-Carlo方法进行仿真,试验结果验证了该算法的有效性。

The existed BOC acquisition techniques' characteristics are listed and compared is this paper.A Modified sideband technique for the BOCCos(15,2.5) acquisition based on FFT is proposed,which is suitable for the software receiver.The HRC algorithm is also introduced to the BOCCos(15,2.5) signal,and it obtains a good performance in the multipath rejection.Simulation results prove the availability of the proposed method by means of the Monter-Carlo method.