3-5GHz短距离超宽带广义信道的测量与性能分析

Measurement and performance analysis of short range UWB generalized channel from 3 to 5 GHz

在收发天线距离较近的情况下,对3-5GHz超宽带广义信道进行了频域测量,对所测数据进行了后期处理,得出其时域冲激响应,并且在基于多带UWB提案设计的仿真平台上进行了性能分析。实验表明,采用不同的收发天线对系统的性能有明显的影响,因此,本文提出的测试方法可以用于超宽带天线的性能评估与优选。

In this paper, frequency domain characteristic of short range LIWB generalized channel from 3 to 5GHz was measured using vector network analyzer. Based on these results, impulse response of the generalized channel was achieved and used as the channel model in a multi - band - based OFDM simulator. From measured and simulated results, it is observed that the performance of UWB system is sensitive to the transimission and receive antenna pair. Thus the method proposed in this paper may be useful for the performance evaluation and the optimal choice of UWB antennas.