无线通信系统仿真中的性能指标的测量

面向3G和4G的下一代无线通信系统复杂性远高于传统系统，基于经验法则的传统设计方法具有较大的局限性，理论仿真支撑的网络规划和系统仿真显得尤为重要。近年来计算机软件仿真技术和无线通信数学模型已渐趋成熟，目前无线通信系统的设计标准化流程一般是从软件仿真开始。特别是对于3G和4G无线系统，由于系统复杂性的提高，在系统设计和规划阶段必须首先在仿真环境中测量各项系统性能指标。本文首先介绍基于MATLAB的无线通信系统仿真技术和无线通信仿真系统的常用测量指标，然后通过搭建基于DCA算法的无线通信仿真系统在软件环境中测量了相关的性能指标。文章最后利用该测试手段结合DCA算法在不均衡用户分布环境中的性能表现的实例给出了软件仿真结果和仿真数据分析。

Performance measurement of wireless system simulations

The future wireless communication systems, the 3G and 4G technology, bring us the new aspect of exchanges as well as ultimate complexity of system design and implementation.It becomes impossible to construct a system at the very beginning, refine it, and reconstruct it, which is the routine of traditional system designs.With the simulation tools as MATLAB and the development and maturity of simulation method and theory, it becomes a standardized process in the wireless systems design to implement a simulation system at the very first, and measure the key parameters within the software environment..The author briefly introduces the background of MATLAB, wireless communication systems and its simulation methods. Then the key performance evaluation parameters within these scenarios are introduced, while the author constructs a software simulation system based on DCA algorithm to get the measurement of these parameters.Finally, the performance simulation results are analyzed and evaluated.