实时实现的近端信号抵消通信

Real-time Near-end Signal Cancellation Communication

空气声信道通信一直是通信领域中的热点问题,自干扰抵消是其中的关键内容之一。本文针对空气声信道提出了运用全双工的通信方式,进行关于自干扰抵消的研究。在研究过程中,为解决全双工通信方式中存在的近端发送信号会被近端接收设备接收的问题,采用了自适应滤波器。其中,滤波器采用了LMS和RLS算法。通过验证LMS算法在实际中的操作,可以完成实时实现近端信号抵消通信的目标。

Absrtact:Air-acoustic channel communication has always been a hot issue in the communication field, and self-interference cancellation is one of the key contents. In this paper, a full-duplex communication method is proposed for the air acoustic channel, and the research on self-interference cancellation is carried out. In the research process, in order to solve the problem that the near-end transmitted signal will be received by the nearend receiving device in the full-duplex communication mode, an adaptive filter is used. Among them, the filter adopts LMS and RLS algorithm. By verifying the operation of the LMS algorithm in practice, the goal of real-time near-end signal cancellation communication can be achieved.