摘要
在介绍基本速率用户 网络接口的基础上 ,设计了一种用于基本速率用户 网络接口的传输电路 ,对其性能进行了分析。消除侧音采用了回波相消技术。该技术精确地模仿回波信号 ,然后有效地抑制回波 。
User Network Interface is introduced and a transmitting circuit used in the User Network Interface is delineated. The performance of the circuit is analyzed. ECH(Echo Canceller Hybrid System) is used to remove side tones. This system can imitate the echo signal and get rid of it without interfering with the received information.
