无线传播信道回放模型建模方法及应用

Wireless channel playback modeling and its applications

介绍了一种确定性无线信道建模方法——回放模型建模方法,该方法以实时高速的实际无线传播环境测量为基础,能精确复制无线环境的传播特征。首先给出回放模型的建模思路以及对无线信道测量方法和测量仪器的要求;然后重点介绍处理实际外场测量数据形成回放模型的主要步骤和方法,并给出一些典型无线环境的测量和数据处理结果;实际测量和应用例子表明回放模型相对统计模型能更加精确的描述典型无线环境的传播特征,从而在WCDMA等无线系统尤其是物理层系统设计和优化过程中发挥重要的作用。

A deterministic wireless channel modeling method - playback channel modeling and its applications was presented. The general method of playback channel modeling was introduced and the requirement on the wireless channel measurement was analyzed briefly. The method and steps of processing practical measurement results for forming the playback model was described in detail. Finally an application example of the playback model in WCDMA physical layer design and optimization was presented. Through wideband high-speed real-time wireless channel measurement and post-processing, the time-variant wireless channel impulse response with high SNR can be obtained based on which the wireless playback channel model is able to duplicate exactly the practical wireless channel propagation characteristics.