瞬态检测理论在抗限带干扰中的应用

APPLICATION OF THE INSTANTANEOUS DETECTION METHOD(IDM) IN THE SUPPRESSION OF BAND LIMITED INTERFERENCE

本文介绍基于瞬态检测理论的实验性基带数字通信终端系统。在信道带宽3000Hz,传信率2400bps,输入峰值信噪比不小于-10dB条件下,实现了检测误码率小于10^(-4)。实验结果表明,瞬态检测方法具有极强的抗限带干扰和码间互扰的能力,其检测效果优于一般的统计检测方法。因此,可以实现高速数字通信,或者提高系统的抑制干扰能力。

This paper introduces a digital communication system based upon the Instantaneous Detection Method(IDM). Under the condition: bandwidth(BW)3000Hz, data rate 2400bps and input SNR at least-10 dB, the bit error rate (BER) achieved is less than 10E-4. The experimental data has shown that IDM is effective for suppression of both band limited noise and intersymbol inetrference, and has superiority over conventional detection method. Using IDM, we can realize high-speed digital communication on the voice band or improve the capability of a system to suppress noise.