Pocsag Code Wireless Led Platform And Transmission Characteristics Of Study

The main task of the project, the wireless LED information platform basing on POCSAG code and the research of wireless transmission characteristic , is to research the POCSAG code,consisting of the code structure,coding&decoding theory and relative arithmetics. According to the electric wave'transmission characteristic in wireless communication,it analyses the effect of the landform, multipath and shadowing in the wave transfering in cities then it carrys on the analysis and estimate of its values.On the basis of these, using the technology of electronic design and software, we develop a wireless transfer system which is composed of the LED display and the POCSAG coding equipments to form a wireless information declaration platform involves hundreds of displays.By measuring the intensity of its actual coverage ,we determine the slope curve of path loss;at the same time ,we make the system intensity coverage figure using the GIS application tools.It not only validates the design of the system,but also provides a scientific resolvent for the layout of the radio station and the distributing of the radio spectrum.