基于FCME检测的脉冲干扰抑制方法

A FBMC Pulse-Interference Suppression Method Based on FCME Algorithm

针对FCME算法检测时间过长,且常规干扰处理方法抑制干扰后出现数据缺损的不足,文章研究了一种基于改进FCME检测的FBMC脉冲干扰抑制方法。该方法包括干扰检测和干扰消除2方面:干扰检测是对FCME检测算法中的初始门限计算进行改进,以误符号率最低的样本计算初始门限;干扰消除则是根据检测结果,结合压缩感知技术提纯脉冲干扰,再将原接收信号与脉冲干扰作差实现。仿真结果验证了改进的干扰检测方法在保证FCME检测性能的同时缩短了检测时间,且干扰抑制效果优于常规方法,提高了FBMC数据传输的可靠性。

In view of the long detection time of FCME algorithm and the data loss of conventional interference processing methods to suppress interference, a FBMC pulse interference suppression method based on improved FCME detection is studied in this paper. The method includes interference detection and interference cancellation. Interference detection is to improve the initial threshold calculation of FCME detection algorithm by calculating the initial threshold with the lowest symbol error rate sample;interference cancellation is to purify impulse interference based on the detection results, combined with compressed sensing technology, and then to purify the original received signal and impulse interference, and then the detected interference can be subtracted from the received signal. The simulation results show that the improved interference detection method not only ensures the detection performance of FCME, but also shortens the detection time, and the interference suppression effect is better than the conventional method, which improves the reliability of FBMC data transmission.