Gota Research On Key Technologies Of Power Control And Simulation

CDMA is the mainstream technology in the future telecommunication, power control technology is one of the key techniques of CDMA, It is significant to employ power control for diminishing the interference of users, guaranteeing the quality, and increasing system capacity.GoTa is the first national digital trunking group standard based on CDMA1x. In the current GoTa system, the BS transmits the signal with the maximum power, to meet the requirements of all the trucking group users'communication in a cell, which results in the unnecessary energy consumption, at the same time, generates the interference to other users, affects the system capacity .The power control of users in a GoTa group has never be mentioned before. The effects to CDMA system is being researched after GoTa is introduced in CDMA system. In this thesis, the main job is just concentrate on discussing preliminarily the power control problem of users in GoTa group.According to the GoTa system's technology characteristics, the objects of power control include listenning users and speaking user, their power control consists of forward and reverse power control .The thesis consists of the following several part contents:1. For power control of listening users, forward power control method are introduced based on full, multichannel, filtered report, and collision method etc.The full report method has redundancy report information, and its real-time performance is bad, multichannel report is introduced to improve the real-time performance, and filtered report is introduced to eliminate the redundancy information, finally the collision method introduced can not only get higher real-time performance but also diminish the redundancy information; 2. In order to meet the requirements of making the dynamic simulation of trunking group system, the MS's random move equation is brought forward, the simulation of MS's distribution is done and the integrated channel model are presented;3. The smart predicative model of power control is introduced to overcome the delay and track the change of the complicated network, with this model, the power control's performance is greatly improved. the adoption of neural network...