多速率调制无线信道服务过程及信道建模

The Service Process and Modeling of Radio Channel in Multi-rate Wireless Networks

现代无线网络中,为克服复杂无线信道对系统服务质量影响,自适应调制编码是采用于物理层的有效技术手段之一。该文采用队列技术分析无线信道服务过程与业务流过程和物理层自适应调制编码技术关系,对自适应调制编码无线信道服务过程建模;并提出一种基于服务过程突发特性等效的自适应调制编码无线信道建模方法。该文采用数值方法分析自适应调制编码无线信道服务过程所表现的突发性,验证了所提出无线信道建模方法的可行性和有效性。

In modern wireless networks, Adaptive Modulation and Coding （AMC） is one of effective technologies adopted in physical layer to overcome complex wireless channel and improve quality of service of system. In this paper, the relation between wireless channel service process and traffic flow and AMC adopted in physical layer are analyzed, the wireless channel service process is modeled; and an equivalent burstiness characteristic AMC wireless channel modeling method is proposed. The burstiness character of AMC wireless channel and the feasibility and effectiveness of the proposed modeling method are proved with numerical analyses.