Propagation characteristics in corridor scenario about typical radio wave

摘要

Corridor radio-wave propagation is of interest for some applications, such as personnel orientation and wireless communication, which are used in wireless sensor network (WSN). In corridor, the wireless signal transmission is influenced by distance, antenna height and antenna angle. 433MHz is a typical radio wave used in the WSN. Therefore, the paper presents a comprehensive measurement of path loss, the influence of antenna height and antenna angle to receive power in the 433MHz band. Our measurement results show that while antenna heights is less than or equal to 1.25 meter, the path loss is fit for the law of logarithmic attenuation with all antenna angles. And the variance of the path loss n and the antenna height h can be defined in a quadratic function. While the antenna height h is more than 1.25 meter, the path loss model is similar to local free-space propagation model. The path loss coefficient n1 in the model is logarithmically related to the propagation distance x. This has as a result that the loss model obtained in this experiment is suitable for 433MHz wireless signal transmission characteristic in the corridor environment, which has important significance for research and application of the indoor WSN.