【作者】 高翔；

【导师】 孟利民；

【作者基本信息】 浙江工业大学 ， 电子与通信工程， 2007， 硕士

【摘要】 CDMA2000 1x EV-DO技术是对CDMA2000 1x网络在提供数据业务方面的一个有效的增强手段。通过对CDMA2000 1x EV-DO无线链路设计方面进行研究,网络技术人员能够更深入地了解EV-DO的网络设备,以达到更好地提供数据分组业务、增强网络覆盖质量的目的。本文对CDMA2000 1x EV-DO无线链路设计的研究内容分为三个部分。第一部分对EV-DO的物理层和空中接口进行介绍,包括前向信道结构、反向信道结构等,并且介绍了无线链路的性能计算方法。第二部分对EV-DO中速率控制和功率控制的理论部分进行总结和分析,着重分析速率控制算法和功率控制算法。主要内容包括:速率控制和功率控制的基本原理、控制流程、典型算法以及这两种控制手段对系统覆盖性能的影响。第三部分以浙江联通新昌分公司CDMA2000 1x网络为模拟网络,介绍了如何在当前网络上进行1x EV-DO前向链路预算和反向链路预算。并且通过对网络模拟结果的分析,讨论了前向链路、反向链路覆盖差异性的原因,给出了相应的解决方案。更多还原

【Abstract】 CDMA2000 1x EV-DO is an effective improvement for CDMA2000 1x wireless network in providing data service. By the study on the disign of EV-DO channel, it is helpful for network technicians to learn more about the EV-DO equipments. Therefore, those equipments can provide better data services and improve the quality of network overlay.In the thesis, the study on the disign of EV-DO channel is divided into three parts. The first part introduces the physical layer and air interface of EV-DO, including the forword channel structure, the reverse channel structure and the computing method on performance of wireless channel. In the second part, the theories of rate allocation and power distribution are concluded. And it pays more attention on the rate allocation algorithms and power distribution algorithms. The principle of rate allocation and power distribution is introduced in this part, including the control flow part, algorithms and the analysis on their influence of system overlay performance. In the third part, a practical EV-DO project is introduced. This project is carried on by the China United Telecommunications Corporation Xinchang Branch. In this part, the budgets of both forword channel and reverse channel are discussed. Moreover, by analysing the measure results, the reasons on the different overlay of forword channel and reverse channel are discussed. And the corresponding solutions are given.更多还原