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将几种常用数字波形的陈-Mbius逆变换作为四路载波数字通信系统数字输入信号的编码波形函数族,由其对二进制输入信号进行调制后,直接叠加在一个物理信道上进行传输.在接收端,用与各调制编码波形对应正交的数字波形对各路信号进行同步相干解调,从而构成新的相干调制解调系统.应用MATLAB平台对系统进行性能仿真,并与传统的相干调制解调系统的仿真结果相比较.结果表明,该系统具有更优异的抗强噪声与抗干扰的性能,可实现多路载波数字通信的直接叠加,大大节省系统的初始投资与运行费用.
Chen-Mbius inverse transform of several commonly used digital waveforms is used as a coded waveform function family of digital input signals of a four-channel carrier digital communication system. The binary input signals are modulated and directly superposed on a physical channel for transmission. At the receiving end, the digital signals orthogonal to each modulation and coding waveform are used to perform synchronous coherent demodulation on each signal to form a new coherent modulation and demodulation system. The performance of the system is simulated by MATLAB platform and compared with the traditional coherence The results show that this system has more excellent anti-strong noise and anti-jamming performance, which can realize the direct superposition of multi-carrier digital communication and greatly save the initial investment and running cost of the system.