论文部分内容阅读
空时频码多域联合抗干扰技术是未来军用通信抗干扰较为明显的发展趋势。文章提出了具有空时频联合分集效果的Alamouti结构空时慢跳频(space-time slow frequency-hopping Alamouti,STFH-Alamouti)通信系统,该系统采用了STFH编码算法和独立相干滤波补偿(Independent coherent filtering compensation,ICFC)译码算法,综合了多输入多输出(Multiple Input Multiple Output,MIMO)技术抗衰落性好和跳频技术抗干扰性强的优势且译码复杂度低。通过建立软件平台,仿真验证系统在宽带干扰下的抗干扰性能,并与常规Alamouti系统和跳频系统性能进行对比分析,仿真结果证明该系统抗干扰性能明显提升,可获得跳频增益约10dB,分集复用增益约14dB。
Space-time code multi-domain anti-jamming technology is the future of military communications more obvious anti-jamming trend. A space-time slow frequency-hopping Alamouti (STFH-Alamouti) communication system with space-time-frequency joint diversity effect is proposed. The STFH-Alamouti communication system uses the STFH coding algorithm and the independent coherent filter compensation filtering compensation (ICFC) decoding algorithm combines the advantages of good anti-fading performance and anti-interference ability of multiple input multiple output (MIMO) technology with low decoding complexity. By establishing a software platform, the anti-jamming performance of the system under broadband interference is verified by simulation and compared with the performance of the conventional Alamouti system and the frequency hopping system. The simulation results show that the anti-jamming performance of the system is obviously improved and the frequency hopping gain is about 10dB. Diversity multiplexing gain of about 14dB.