基于IT++的QAM调制解调算法的实现

An Implementation of QAM Modulation/Demodulation Algorithm Based on IT++

信息传输的核心问题是有效性和可靠性,正交幅度调制(QAM)作为一种新的调制技术因其具有很高的频带利用率而得到广泛应用。IT++是基于C++语言的信号处理和通信方面的仿真库函数工具。本文分析和研究了M-QAM调制在IT++平台中的实现方法,并比较了不同M值的QAM的性能。仿真结果与理论分析一致,与MATLAB相比极大地提高了仿真速度。

Efficiency and reliability are the critical issues for information transmission.As a new modulation technique,quadrature amplitude modulation （QAM） is widely used because of its high bandwidth effficiency.IT＋＋ is an open- source C＋＋ library aimed at research in the field of signal processing and communication.This paper analyses and studies the implementation of M-QAM based on IT＋＋.Lastly, it compares the performances of QAM with different M values.The simulation results are correspond with theoretical analysis.Besides,compared with MATLAB,IT＋＋ is helpful to greatly compress the simulation time.