Measurements and Characterization of Ultra Wideband Propagation Channels in a Passenger-Car Compartment
Measurements and Characterization of Ultra Wideband Propagation Channels in a Passenger-Car Compartment
复制标题
客车车厢内超宽带传播通道的测量和表征
DOI：
10.1093/ietfec/e89-a.11.3089
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Takehiko Kobayashi
中科院分区：
文献类型：
--
作者：
Takehiko Kobayashi
超宽带（UWB）的信号传播进行了测量，并与窄带在车厢内的比较，其特征在于，以适应新的无线设备的设计，为乘客的安全和舒适。UWB和窄带路径增益，延迟分布，并在车厢内的延迟扩展的空间分布来自频域响应（从3.1到10.6 GHz）与矢量网络分析仪测量。窄带信道会导致许多死点（深衰落点），而UWB则不会，尽管有些频率分散是不可避免的。从链路预算的角度分析了超宽带系统的衰落深度与占用带宽的关系，表明超宽带系统优于窄带系统。在给定多径分量数的情况下，与其它两种环境下的接收能量进行了比较
Ultra wideband (UWB) signal propagation was measured and characterized in comparison with narrowband in a passenger-car compartment, to accommodate a design of new wireless devices for the safety and comfort of passengers. Spatial distributions of UWB and narrowband path gain, delay profiles, and delay spreads within the compartment were derived from frequency-domain responses (from 3.1 to 10.6 GHz) measured with a vector network analyzer. Whereas narrowband channels resulted in a number of dead spots (deep fading points), UWB yielded none, though some frequency dispersion was inevitable. Fading depth versus occupied bandwidth was also derived, which indicated superiority of UWB over narrowband systems from the viewpoint of link budget. Comparison with two other environments was also made in the received energy contained in a given number of multipath components