Mbius数字基带通信系统的性能仿真

Performance Simulation of Digital Base-Band Communication System by Mbius Transform

在一定信噪比的前提下,通过计算机仿真和编程计算,对Mbius数字基带通信系统中偶对称三角波、奇对称三角波、偶对称方波、奇对称方波和锯齿波这5种常用的调制解调函数族及其逆变换进行仿真1万次,观察错误概率(Pb)的波动范围.仿真结果表明,系统是完全可行的.对系统在不同信噪比情况下的错误概率进行计算,绘制错误概率曲线.结果表明,新型Mbius数字基带通信系统比传统系统性能卓越,可降低系统的初始投资及提高系统的性价比.

Under certain ratio of signal-to-noise （S/N） and through the computer simulations and calculations, the performances in Mobius digital base band communication system of five often used modem function set, those are the even and odd symmetrical triangle wave, even and odd symmetrical square wave and saw-tooth wave and their inverse transforms, are simulated 10 000 times, and the fluctuation ranges of the error rate （Pb） are observed. The simulation results show that the system is completely feasible. The error rates in different ratio of signal-to-noise are calculated and the figures of error rate to signal-to-noise are plotted out. The figures of error rate to signal-to-noise show that the new type system of Mobius digital base band communication system has much more excellent performance than the traditional system and it can decrease the initial investment and increase the cost performance.