摘要
选用Cost 231-Walfisch-Ikegami模型对手机无线信号传输模型进行了简化,通过仿真,分析了手机电视信号在直通视距和非直通视距下传输损耗的特点。在直通视距情况下,传播路径损耗随电波频率增加而增大,在非直通视距情况下,损耗随着基站高度增加而增大。接着给出了在非直通视距情况下,街道宽度和天线高度对损耗的影响,街道越窄衰减越大,发射天线高度越低衰减越大,指导了实际工程应用。
Cost 231-Walfisch-Ikegami Cost model is used to simplify the transmission model of mobile TV radio signal. The transmission loss of mobile TV signal is analyzed by simulation.In the case of LOS,the path loss increases with the increasing of the wave frequency,and it also increases with the increasing of the antenna station height in the case of NLOS. And then the influence of street width and antenna height on the loss is also presented in the case of NLOS.The more narrow the streets and the higher the transmission antenna,the greater the path loss is.This can guide the practical engineering application.
出处
《无线电通信技术》
2016年第3期76-78,97,共4页
Radio Communications Technology
基金
国家自然科学基金项目(6146053)
云南省教育厅基金(2014Y021)
云南省广播电视局合作项目联合资助
