3G短波网络物理层仿真算法设计与分析

Design and Analysis of Simulation Algorithm of the 3G HF Network Physical Layer

针对3G(第三代)短波网络物理层特性,提出一种短波网络物理层仿真算法。该算法采用Walnut Street模型对信道传播特性进行模拟,实现仿真过程中的信噪比序列重放,通过搭建波形性能模型模拟调制波形的信噪比-误码特性。结合模型解算流程,提出将上述模型分别嵌入到OP-NET仿真器无线Pipeline Stage和Modulation Curve中进行仿真实现,给出了具体仿真流程。仿真结果表明,该算法具有高效、精确的特点,可为短波网络研究提供一个良好的仿真平台。

A simulation approach is presented according to characteristics of the 3rd generation（3G） HF network physical layer. The channel propagation process is simulated through Walnut Street channel model, by regenerating SNR values during network simulation. The waveform performance model is built to simulate the bit error performance of channel waveform. Corporated with parameters calculation,these models are then embedded into Wireless Pipeline Stage and Modulation Curve in OPNET network simulation environment,a specific simulation process is provided too. Simulation results show that this approach can simulate HF network efficiently and precisely,which provides a good platform for HF network research.