并行多信道软件无线电接收机仿真

Simulation of Multichannel Software Radio Receiver Based on IQ DDC

讨论了软件无线电接收机的基本理论:信道划分和解调算法。在此基础上研究了下变频技术和低通滤波技术在并行多信道接收机中的应用,提出了采用软件无线电中的FM和AM解调方式解调信号,并完成了软件无线电接受机的系统仿真。

This paper introduces first the basic theory of software radio receiver, namely, the division of channel and the demodulation algorism, based on which the application of the down digital converter and the sampling of low-pass is discussed. Frequency-demodulation and amplitude-demodulation are used to demodulate the signal. The system simulation of the Software Radio Receiver is also made.