Performance of Dynamic Spectrum Anti-jamming Systems Under Partial-Band Noise Jamming
Lu Jianxun · Dianzi xuebao · 2011
In order to evaluate the performance of the new dynamic spectrum anti-jamming(DSAJ) system in anti-jamming communications,channel capacity and bit error rate(BER) of DSAJ systems under partial-band noise jamming are studied via theoretical analysis and simulations.Capacity and BER of both DSAJ systems and conventional frequency hopping(FH) systems are compared.Results show that within a wide range of partial-band jamming factor values,DSAJ systems achieve larger capacity than FH systems.Even without jammer state information(JSI),DSAJ systems still achieve larger capacity than FH systems with JSI.At medium to high signal-to-jamming ratios(SJR),DSAJ systems achieve smaller BER than FH systems under worst-case partial-band jamming.Moreover,error correction coding can further improve the performance of DSAJ systems.