Abstract:

Aiming at the chirp-like interference that may appear in the direct sequence spread-spectrum (DSSS) system, an effective algorithm of interference suppression based on matched signal transform (MST) is presented, which is the peek-value holding algorithm. This algorithm is developed according to the fast scheme of MST as well as the masking anti-jamming algorithm. The simulation results indicate that this algorithm can effectively suppress linear or non-linear chirp-like interference in DSSS system. Compared with some other anti-jamming algorithms, the proposed algorithm predominates in bit-error rate, robustness, calculation complicacy and implementation, so it has a wide application prospect.