CAJ | 학술논문

介绍了采用高精度信道测试设备进行室外100 MHz宽带无线信道测试;针对传统多径衰落无线信道测量模型中易忽略的漫散射效应,提出了包含漫散射指数衰落特性的宽带无线信道扩展模型;基于实测数据提取了相应的扩展模型参数和更准确的时延特性,验证了宽带扩展模型的有效性和必要性.宽带移动通信信道扩展模型能够高精度地描述宽带信道衰落特性,对第四代宽带移动通信系统的设计乃至实际散射环境下的现场试验均有重要意义.
개소료채용고정도신도측시설비진행실외100 MHz관대무선신도측시;침대전통다경쇠락무선신도측량모형중역홀략적만산사효응,제출료포함만산사지수쇠락특성적관대무선신도확전모형;기우실측수거제취료상응적확전모형삼수화경준학적시연특성,험증료관대확전모형적유효성화필요성.관대이동통신신도확전모형능구고정도지묘술관대신도쇠락특성,대제사대관대이동통신계통적설계내지실제산사배경하적현장시험균유중요의의.
This paper studies the diffuse scattering mechanism based on the highresolution radio channel measurement with 100 MHZ bandwidth.An extended broadband wireless channel model was proposed in terms of an exponential fading component with the normal distribution.The parameters of the extended model in additional to the statistical delay characteristics were estimated from the measurement data.It has been turned out that the observation results of the measurement can be predicted by the extended model precisely,which is significant for the optimization of the fourth generation broadband mobile communication systems in the real scattering environment.