收发同时技术中的数字相消技术研究

在电子系统中,有时需要在同一平台上实现同时进行信号的接收和发射。收发同时条件下对强耦合干扰信号相消需要更短的数据和更高的相消效果,而一般因果对消器相消性能较差。文章提出了采用非因果滤波器进行数字对消的技术。首先建立了非因果滤波器数字对消模型,然后对数字对消进行了仿真分析。仿真说明了数字相消的优异特性,并表明了在相同滤波器阶数的情况下,非因果滤波器数字对消法有更好的对消效果。 

The Research on Digital Cancellation in Simultaneous Transmission and Reception Technology

In the electronic system, it occasionally needs to accomplish the simultaneous transmission and reception of signal in the same platform. In the circumstance of simultaneous transmission and reception, strong coupling interference signal need shorter data and higher cancellation effectiveness, while the cancellation effectiveness of normal cause and result canceler is poor. The technology of using non-causal filter to realize digital cancellation is proposed in the theme. The model of non-causal filter digital cancellation is built at first, then the digital cancellation is simulated analysis. With simulation approach proposed, the digital cancellation have advantages, in the circumstance of same filter degree, non-causal filter digital cancellation has better cancellation effectiveness.