JTIDS(Joint Tactical Information Distribution System)即联合战术信息分发系统,是美国陆海空三军为了应对联合作战而开发的具有相对导航、敌我识别、任务管理、武器协同、目标监视、保密话音和指挥控制能力的一种大容量、保密、抗干...JTIDS(Joint Tactical Information Distribution System)即联合战术信息分发系统,是美国陆海空三军为了应对联合作战而开发的具有相对导航、敌我识别、任务管理、武器协同、目标监视、保密话音和指挥控制能力的一种大容量、保密、抗干扰、时分多址的战术信息分发系统。为了应对未来不可预知的战争,对JTIDS数据链系统的干扰技术进行研究是势在必行的。本文介绍了JTIDS的系统特点和关键技术,通过对两种通信干扰技术的比较,最后得出对JTIDS的干扰通过对其同步段信号实施多频点阻塞式干扰将具有较高的可行性。展开更多
This paper presented a scheme of two-hop cellular network with fixed relay nodes (FRN). Based on this scheme, co-channel interference and signal interference ratio(SIR) received by base station(BS) and FRN were analyz...This paper presented a scheme of two-hop cellular network with fixed relay nodes (FRN). Based on this scheme, co-channel interference and signal interference ratio(SIR) received by base station(BS) and FRN were analyzed. Both the theoretical analysis and simulation results show that the SIR can be improved significantly when relays are employed in the network. The higher spectral efficiency can be obtained due to the improved two-hop link quality through the use of adaptive modulation and coding (AMC). The antenna height of FRN and the cell radius of BS and that of FRN influence SIR received by BS and FRN and the system spectral efficiency greatly. The proper antenna height of FRN and cell radius of BS and that of FRN were also given to get the highest spectral efficiency.展开更多
文摘JTIDS(Joint Tactical Information Distribution System)即联合战术信息分发系统,是美国陆海空三军为了应对联合作战而开发的具有相对导航、敌我识别、任务管理、武器协同、目标监视、保密话音和指挥控制能力的一种大容量、保密、抗干扰、时分多址的战术信息分发系统。为了应对未来不可预知的战争,对JTIDS数据链系统的干扰技术进行研究是势在必行的。本文介绍了JTIDS的系统特点和关键技术,通过对两种通信干扰技术的比较,最后得出对JTIDS的干扰通过对其同步段信号实施多频点阻塞式干扰将具有较高的可行性。
基金National Science Fund for Creative ResearchGroups (No. 60521002) Chinese NationalKey Technology R&D Program(No. 2005-BA908B02)Science Foundation of ShanghaiMunicipal Commission of Science and Tech-nology(No.05dz05802)
文摘This paper presented a scheme of two-hop cellular network with fixed relay nodes (FRN). Based on this scheme, co-channel interference and signal interference ratio(SIR) received by base station(BS) and FRN were analyzed. Both the theoretical analysis and simulation results show that the SIR can be improved significantly when relays are employed in the network. The higher spectral efficiency can be obtained due to the improved two-hop link quality through the use of adaptive modulation and coding (AMC). The antenna height of FRN and the cell radius of BS and that of FRN influence SIR received by BS and FRN and the system spectral efficiency greatly. The proper antenna height of FRN and cell radius of BS and that of FRN were also given to get the highest spectral efficiency.
