The co-site interference exists in kinds of communication systems, especially in digital communication systems, also is one of the biggest threats ＂in electromagnetic compatibility （EMC） designation of the systems....The co-site interference exists in kinds of communication systems, especially in digital communication systems, also is one of the biggest threats ＂in electromagnetic compatibility （EMC） designation of the systems. Analyzing the co-site interference is an important process in achieving EMC performance of the system. Under the situation, the co-site interference simulation analysis of a vehicular digital communication system based on interference margin （IM） prediction method by bit error ratio （BER） was proposed in the paper. In the simulation analysis, some physical models of the vehicular communication system were established on SIMULINK environment, the upper limit of BER level for audio signals was defined as the IM, three different types of co-site interference was analyzed respectively, and the simulation results were obtained in the form of system interference bandwidth. From these results, the EMC performance evaluation of the vehicular communication system was predicted based on the IM prediction method. By comparing with the actual test results, the correctness of the simulation results was validated and the simulation analysis method can be used for reference by other communication systems was indicated.展开更多
水泥基材料的应用广泛,需求量大,已成为当今人类社会不可缺少的人造材料。但是,由于矿产资源相对匮乏、环境问题日趋恶化,新型高性能节能环保水泥材料的研究发展已成为一种趋势。EMC(Energetically Modifi ed Cement)材料凭借着强度高...水泥基材料的应用广泛,需求量大,已成为当今人类社会不可缺少的人造材料。但是,由于矿产资源相对匮乏、环境问题日趋恶化,新型高性能节能环保水泥材料的研究发展已成为一种趋势。EMC(Energetically Modifi ed Cement)材料凭借着强度高、耐久性好、成本低、节能环保等优势,适应于当前形势的需求,具有很大的市场发展潜力。展开更多
基金supported by EMC&EMB Lab of Beijing University of Posts and Telecommunications and Beijing Institute of Astronautic System Engineeringthe National Natural Science Foundation of China(61171051)
文摘The co-site interference exists in kinds of communication systems, especially in digital communication systems, also is one of the biggest threats ＂in electromagnetic compatibility （EMC） designation of the systems. Analyzing the co-site interference is an important process in achieving EMC performance of the system. Under the situation, the co-site interference simulation analysis of a vehicular digital communication system based on interference margin （IM） prediction method by bit error ratio （BER） was proposed in the paper. In the simulation analysis, some physical models of the vehicular communication system were established on SIMULINK environment, the upper limit of BER level for audio signals was defined as the IM, three different types of co-site interference was analyzed respectively, and the simulation results were obtained in the form of system interference bandwidth. From these results, the EMC performance evaluation of the vehicular communication system was predicted based on the IM prediction method. By comparing with the actual test results, the correctness of the simulation results was validated and the simulation analysis method can be used for reference by other communication systems was indicated.
文摘水泥基材料的应用广泛,需求量大,已成为当今人类社会不可缺少的人造材料。但是,由于矿产资源相对匮乏、环境问题日趋恶化,新型高性能节能环保水泥材料的研究发展已成为一种趋势。EMC(Energetically Modifi ed Cement)材料凭借着强度高、耐久性好、成本低、节能环保等优势,适应于当前形势的需求,具有很大的市场发展潜力。
