A New DS/M-ary/SSMA Scheme Applicable in Unmanned Air Vehicle Data Link
YE Xiang-yang · Wireless Communication Technology · 2008
Anti-jamming technique is the crucial and hot issue in unmanned air vehicle data link.Based on the idea of M-ary spread spectrum(SS),direct sequence spread spectrum(DS-SS),frequency hopped SS(FH-SS) and orthogonal frequency division multiplex(OFDM),a novel anti-jamming draft,named DS/M-ary/SSMA,is proposed to improve anti-jamming and anti-multipath performance of Unmanned Air Vehicle data link.The anti-jamming system and its math model are presented first,and then the signal format of transmitter and receiver is deduced,and system processing gain is given and compared with traditional spread spectrum system.Theoretical research and simulation results show that the proposed scheme has lower BER,better anti-jamming and anti-multipath performance than traditional DS/FH SS system.