基于OPNET的3G-ALE多址接入协议仿真分析

Analysis on MAC of 3G-ALE based on OPNET simulation

摘要:

由于短波资源有限，研究短波网络多址接入协议尤为重要。介绍了第3代短波自动链路建立协议(3G-ALE)所采用的新技术，然后对3G-ALE协议多址接入算法进行了分析。在OPNET网络仿真平台，独立设计完成了3G-ALE节点模型、相关进程模型及网络模型，对自动链路建立过程进行了仿真，并进行了不同情况下节点建链成功率的仿真分析。结果表明，信道误码率对节点建链成功率影响最明显，信道数量和网络节点数次之，节点业务量对建链影响最小。

Abstract:

It is significant to explore the Multi-access(MAC) protocol of HF due to the poor bandwidth of HF. In this study，the protocol of Multi-access for 3G-Automatic Link Establishment(ALE) was researched. Then based on OPNET Modeler, the networks model, node model and process model of the 3G-High Frequency(HF) were designed. The process of automatic link establishment was simulated. Simulations for successful ratio of link establishment were executed under different conditions. The results show that the Bit Error Rate(BER) has the most important effect on the ratio，while the number of channels and network nodes are following, and the traffic of nodes has the least impact.