基于DSP和交换芯片的中频软件无线电接收控制系统设计

Design of IF Software Radio Receiving Control System Based on DSP and Switching Chip

摘要:

软件无线电是无线通信方式之一，为了精准接收中频软件无线电信号，确保中频软件无线电信号接收控制效果，设计了基于DSP和交换芯片的中频软件无线电接收控制系统。加设数字信号处理芯片和交换芯片，通过振荡器、滤波器、混频器等元件的连接，设计无线电接收机，通过调整逻辑控制电路优化接收控制器，生成并执行接收控制指令。在系统硬件的支持下，利用DSP技术采集并处理中频软件无线电信号，校准无线电信号的不平衡程度，通过调制样式识别、解调以及分类存储等步骤，实现系统的接收控制功能。系统测试结果表明，在此次设计系统的控制下，无线电接收信号的平均信噪比高达47.4dB，能够精准接收中频软件无线电信号，具有较好的中频软件无线电信号接收控制效果，有效扩大无线电的接收范围。

Abstract:

Software radio is one of the wireless communication methods. In order to accurately receive IF software radio signals and ensure the reception and control effect of IF software radio signals, an IF software radio reception and control system based on DSP and switching chip is designed. Add digital signal processing chip and switching chip, design the radio receiver through the connection of oscillator, filter, mixer and other components, optimize the receiving controller by adjusting the logic control circuit, and generate and execute the receiving control command. With the support of the system hardware, DSP technology is used to collect and process IF software radio signals, calibrate the imbalance of radio signals, and realize the system's reception control function through modulation pattern recognition, demodulation and classification storage. The system test results show that under the control of the design system, the average signal-to-noise ratio of the radio received signal is up to 47.4dB, which can accurately receive the IF software radio signal, has a good IF software radio signal reception control effect, and effectively expands the radio reception range.