The Research And Design For Fixed WirelessAccess Of Countryside

Orienting the problem of building communication network in rural area, the paper firstly analyze the presently communication requirements from rural area of our country, and gives the definition of Wireless Access and states its developing history and some application technologies. According to the current stipulated Wireless Access frequency, this paper proposes that 450MHz wireless access technology is the most mature and vast applied solution for composing system network. The research contents and achievements of this paper are as following.1. Studying on the developing of wireless access technologies and requirements of building rural area communication network in our country, this paper points that it is a good choice to use FDMA in building FDD-wireless access system. This technologies are suitable for large area network building and has large area-coverage ability and easy to connect with switchboard and provide voice, facsimileand data transmitting services.2. This paper analyzes the typical 450MHz wireless network, including its basic functions network composing applications, hardware and software structure features Some principles, specifications, system interface and configurations of base depots and base depots controllers are deeply studied about.3. Using 450MHz wireless access system technologies, we designed the solution of local wireless communication network for Anshan communication Corporation. In this paper, we analyze the coverage of wireless access network, network structure, system capacitance. We also discussed some problems, for example, wireless coverage forecasting and frequency planning. This paper summarizes the features of 450MHz无wireless network system project.. At the end of this paper, we describe the system testing conclusions and propose some suggestions for building wireless network in rural area.