软件天线中的环境分类与识别

在智能天线技术的基础上，近期提出了一种新型的天线——软件天线。它能根据所处的环境选择合适的波束形成算法，动态地调整波束形状。实现软件天线的关键技术之一是环境的分类与识别。结合CDMA系统讨论了环境的分类以及环境识别的准则，提出了一种空间平滑的方法来实现环境的识别。模拟计算结果表明，该方法是一种较为有效的方法。

Classification and identification of radio environments in software antenna

Based on the smart antenna technology, a new concept of software antenna has been proposed recently. It can recognize the status of the radio environments and appropriately select an algorithm to dynamically reconfigure itself by the recognized environment. One of the key technologies to realize software antenna is the classification and identification of the radio environments. In this paper, we discuss the categorization of the radio environments and the criteria of identification in CDMA systems Finally a spatial smoothing method to realize the identification of radio environment is proposed. Simulations have been conducted which demonstrated the effectiveness of this approach.