【摘要】 研究室内移动通信优化问题,无线电波的均匀全向传播是室内无线通信系统正常工作的重要保障。由于电磁波传播折射造成衰减,使传统室内天线辐射出的电磁波无法均匀传播到室内空间各个角落。为了解决上述问题,提出一种用泄漏同轴电缆代替传统天线的解决方案。将时域有限差分方法与射线追踪法相结合,对泄漏同轴电缆在室内空间中的辐射场进行仿真,仿真结果表明泄漏同轴电缆在室内空间中的辐射场比较均匀,达到了全向辐射,弥补了传统天线存在通信盲区的缺点,在移动通信中可以很好地发射和接收信号,具有广阔的应用前景。更多还原

【Abstract】 The omni-propogation of electromagnetic wave is very important to the mobile communication system in the buildings.To solve the problem that the electromagnetic wave of traditional antennas can not transmit everywhere in indoor space,the leaky coaxial cable is used to replace the traditional antenna.The radiation field of leaky coaxial cable in indoor space is simulated by using finite difference time domain(FDTD) and ray-tracing method.The simulation results show that the radiation field is equally distributed and the leaky coaxial cable do not have the disadvantage of communication blind zone because of its omni-radiation,so it can work well in mobile communication and will be applied widely in the future.更多还原