摘要
针对当前商用无线多径信道测量设备结构复杂、价格昂贵、灵活性不够的问题,提出了一种基于PCIe接口的软件化无线信道实时测量设备设计方法。该方法利用PCIe接口对接收到扩频测量信号进行获取,并利用多线程方式进行相关处理,具有实时测量的能力,可对无线信道多径特性开展实时测量,具有结构通用性好、测量算法改变灵活、信息存储量内容丰富和实时性较好的特点。给出了一个实际的研制案例,测试结果表明,该设计方法对于较低带宽的测量信号具有良好的适用性。
Aiming at the shortcomings of current commercial wireless multi-path channel sounder,such as complexity on structure,costliness and lack of agility,a design method of wireless multi-path channel sounder based on PCIe is proposed here. The proposed method captures the spectrum-spread signal and correlates it with local signal via multithreading method,so the method is universal on structure,agile for altering algorithm,rich on measurement information and has good real-time characteristic. Finally,an actual development case is given,and measurement results show that the proposed method is feasible and suitable for narrow-band signals.
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