Cdma2000 1xev-do Data Throughput Of The Wireless Internet Access System And Software Implementation

The system of cdma2000 Ix EV-DO, which is one of the mainstream projects of the third generation mobile communication system, provides high rate packet data service for users. Instead of that of the speech service, the purpose of the data service is to maximize the data throughput of the system. How to increase the forward/reverse link data throughput of the base station system has become the key technology of system research.The research actuality of the data throughput of the 2G and 2.5G mobile communication systems, and the data service characteristics of cdma2000 Ix EV-DO system, are analyzed detailed in this paper. On the base of that, the paper puts forward the realization project of increasing the forward/reverse link data throughput of the system: the data schedule arithmetic on forward link, and the data rate control arithmetic on reverse link.The characteristics of the data schedule arithmetic on forward link is that, considering fair, the system provides service for the user who applies the highest data rate, in order to increase the system throughput on the forward link. The characteristics of the data rate control arithmetic on reverse link is that, under the condition of ensuring reverse power unoverload, the system controls users to transmit data rate as high as they can to communicate with base station, in order to increase the system throughput on the reverse link.After putting forward the realization project, the paper demonstrates this project in detail, and codes in C program to carry out, which proves the rationality and the feasibility of this project.At last, the paper gives the results of a great deal of contrast system imitations. The particular data analysis shows that, after using the data schedule arithmetic on forward link and the data rate control arithmetic on reverse link, cdma2000 IxEV-DO system increases the data throughput evidently, which testifies the validity of this project.The mathematics have been using in real Ix EV-DO base station system, and got a good effect. The system data throughput has got the standard of 3G carried by 3GPP2,...