数字图像在时间选择性衰落信道下传输，难以获得满意效果。
The received image is not satisfactory over time-selective fading channel.
由多径色散及多普勒频移造成的频率—时间选择性衰落是城市移动无线信道的一个重要特性。
The frequency time selective fading resulted from multipath dispersion and Doppler frequency shift is an important characteristic of urban mobile radio channel.
提出了一种适用于时间频率选择性衰落信道的MIMO - OFDM系统的组合信道估计方法。
A combined channel estimation method of time-frequency-selective fading channels in MIMO-OFDM systems was proposed.
同时具有时间和频率选择性衰落的信道，我们称之为双衰落信道。
The time- and frequency- selective fading channel is so-called doubly selective fading channel.
接收端的高速运动或者载频的偏移，会引起信道的时间选择性衰落。
Time-selective Rayleigh fading of channels is caused by Doppler shift and carrier frequency offset.
时变色散信道则是同时存在频率和时间选择性衰落的信道。
A time-varying disperse channel is a channel that contain both frequency selective fading and time selective fading.
时变色散信道则是同时存在频率和时间选择性衰落的信道。
A time-varying disperse channel is a channel that contain both frequency selective fading and time selective fading.
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