【摘要】 通过对几种数字波形进行逆变换,把逆变换的结果应用到数字基带通信系统的设计上,对输入的二进制数字信号进行调制,并在接收端用数字波形进行解调.用Matlab软件对系统进行计算机仿真,仿真结果显示,甚至在信噪比很低的情况下,都能很好地还原出原数字信号,具有高保真与强抗噪性能.最后对滤波出来的结果进行误码分析.更多还原

【Abstract】 The inverse transforms of some digital waves were applied in the digital base band communication system.The input binary normal signal was modulated on the waves of the inverse transforms of some digital waves and demodulated by the digital waves in the receiving end.The process was simulated on the computer by using Matlab and the results show that even in the case of very low signal-to-noise ratio,the system can restore the original binary signal well and have an excellent performance on high fidelity and anti-noise.Finally,the error rate of the output was analyzed.更多还原