Research On Networking Technology Of Centralized Network Based On CDMA

Ad Hoc Network is a combination network of mobile communication and computer network which contains unset or unused infrastructure (such as base station, AP), but it can supply the intercommunication among terminals. Currently it's mainly used in military communication, mobile meeting, radio transducer network and so on. How to design an Ad hoc Network in order to guarantee the high quality and stability of communication is a very important research point in military communication.This paper mainly contains 2 parts:network protocol simulation and distribution simulation system. In the network protocol simulation part, we design the network protocol of centralized network and data transmission based on CDMA, and then combines them into an integrated network protocol. Finally, we use OPNET to finish the simulation. This network protocol process is periodical, in which we choose a central node to communicate with others. In the data transmission process, the central node has a data merging with other nodes, which is in charge of data collection and data distribution in order to share the information.In the distribution simulation system part, we design the distributed simulation system based on HLA (High Level Architecture). The core concepts of HLA are interoperability and reutilization. The simulation application and support environment can be separated by the universal and independent procedures which are supplied by RTI. The details are concealed in order to develop each several part independently. We can combine the OPNET and other simulation tools by HLA technology in order to form a huge complex simulation system, which favors the extension of every simulation subsystem and the cooperation with them.