The incoming 3g could not only support the existing mobile operations, but also broad band video operations high quality voice packet data transmission and real time video communication.
Algorithms currently used for high speed data transmission over voice-band channels can be based on following three principles: on LMS criterion, on ls criterion or on artificial neural network.
高速数据传输中信道均衡算法大致分为三类：即基于LMS准则、LS准则和人工神经网络的自适应算法。
3
Because of its convenient, flexible and of low cost, the voiceband modem is widely adopted in digital data transmission, especially in access-loop.