高数据传输速率以及终端的高速移动，导致无线通信信道具有时间选择性与频率选择性两个特征。
High data transmission rates and high mobility give rise to time - and frequency - selectivity in wireless communication channels.
呼之欲出的第三代(3 G)移动通信不仅能提供现有的各种移动电话业务，还能提供高速率的宽带视频业务，支持高质量的话音、分组数据业务以及实时的视频传输。
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.
码间干扰被认为是在移动无线通信信道中传输高速率数据时的主要障碍。
Inter symbol interference is regard of transporting the high rate data main obstacle in the wireless mobile channel.
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