Network Sorting Algorithm for Multi-frequency Hopping Signals with Adaptive SNR

Abstract

Aiming at the multi-FH signal sorting under undetermined condition, this paper put forward a SNR-adaptive sorting algorithm. Firstly, sorting model is established under undetermined condition; then the SNR adaptive pivot threshold setting method is used to find the TF single source. The mixed matrix is estimated according to the TF matrix of single source; lastly, signal sorting is realized through improved subspace projection combined with relative power deviation of source. Simulation result shows the effectiveness of this method under low SNR condition.