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调制质量参数是无线通信领域评价信号质量最重要的参数。对调制质量参数的测量是无线信号测量的关键。以蓝牙信号为例提出了一种基于软件无线电的调制质量参数测量方法。在该方法中,硬件设备仅用于测量最基本的时域信号。滤波、解调和调制质量参数的计算均通过可自定义的软件实现。与传统的利用专用芯片完成信号测量相比,本方法以软件分析为核心,利用软件的灵活性最大程度地扩展了现有仪器的功能。最后,通过实验验证了本方法的准确性。
Modulation quality parameters are the most important parameters for evaluating signal quality in the field of wireless communications. Measurement of modulation quality parameters is the key to wireless signal measurement. Taking Bluetooth signal as an example, a modulation quality parameter measurement method based on software radio is proposed. In this method, the hardware device is only used to measure the most basic time-domain signals. Filter, demodulation and modulation quality parameters are calculated by customizable software. Compared with the traditional method of signal measurement using dedicated chips, this method takes software analysis as the core, and utilizes the flexibility of software to maximize the functions of the existing instruments. Finally, the accuracy of this method is verified by experiments.