OFDM transforms frequency-selective multipath fading channel into flat channel in the frequency domain and reduce the effect of multipath fading.
OFDM技术通过将频率选择性多径衰落信道在频域内转换为平坦信道，从而减小了多径衰落的影响。
Design of a dispersing system based on a multi channel detector and a flat field holographic concave grating.
采用平场凹面全息光栅和多通道检测器设计了一个小型的色散系统。
The phase information of wavelet transform used in the algorithm is invariant with respect to flat fading, and can resist multipath fading of frequency-selecting channel in quite a few degree.
算法所用的小波变换相位信息特征对平坦衰落信道具有衰落不变性，对频率选择性衰落信道也具有很强的抗多径能力。
The feature used in the algorithm is invariant with respect to flat fading, and can resist multipath fading of frequency-selecting channel in quite a few degree.
算法所用特征对平坦衰落信道具有衰落不变性，对频率选择性衰落信道也具有很强的抗多径能力。
Channel bottom is welded into the frame, steel structure for the flat panel, and its size corresponds with the mold box.
底板是以槽钢焊接成框架，钢板为面板的平板结构，其尺寸与模框相对应。
The training sequence of channel estimation in frequency domain should have flat spectrum, which can estimate channel fast and exactly.
作为频域信道估计的训练序列要求具有平坦的频谱特性，可以快速准确地对信道进行估计。
The combination of MIMO and OFDM greatly increases the system capacity in the sense that OFDM and MIMO can respectively provide flat fading channel and spatial gain.
多天线和OFDM的结合极大地提高了系统容量，OFDM能为系统提供平坦衰落信道，而多天线则提供空间增益。
OFDM has the ability of transforming the frequency-selective channel into a collection of parallel flat-fading subchannels and therefore can be adopted in MIMO systems to combat multi-path effects.
OFDM技术可以把频率选择性衰落的信道转化成一组正交的平坦衰落的信道，因此可将OF DM技术应用在MIMO系统中来克服多径衰落的影响。
Simulation results show that the system can get satisfactory image communication performance in the very high spectral efficiency situation over the flat fading channel.
仿真结果表明，在慢衰落无线信道图像传输中，系统能获得满意的图像传输质量和很高的频谱利用率。
Like in an infinite flow, we find that laminar boundary layer, transition region and turbulent boundary layer also exist along a flat plate in open channel flow boundary layers.
试验研究发现明流光滑平板边界层中，与无限边界绕流平板边界层一样，沿平板有层流边界层，转捩区和紊流边界层三部分。
On seismic profile cross-cut the channel, it generally presents as a lenticle with flat top and concave bottom and has the character of infilling in reflection.
河道砂岩体在横切河道的地震剖面上一般表现为充填反射状的顶平底凹的单透镜体；
The problems of carrier frequency offset estimation under the condition of the AGWN channel, frequency flat-fading channel and frequency selective-fading channel are studied in detail respectively.
本文仔细研究了在高斯白噪声信道下、频率平坦衰落信道下和频率选择性衰落信道下高精度估计信号载频偏差的问题，并对相应算法提出了一些改进办法。
Place the gauge on a horizontal, flat , non-slip surface . Stir the sample homogeneous with small palette knife , and the pour sufficient liquid into the deep end of the gauge channel.
将刮板放置在水平的平面上，用小调漆刀将待测样品搅拌均匀，然后在沟槽最深部分滴入试样数滴，以能充满沟槽而略有余为好。
Our centre channel speakers are designed to be suspended from the wall, and have the same depth as a flat-screen TV.
我们中间的那个喇叭是用来悬挂在墙上的，它和平面电视一样长。
Bending all kinds of steel pipe, channel steel, flat steel, Angle, I-beam, such as steel rails.
弯制各类钢管，槽钢，扁钢，角钢，工字钢，钢轨等型钢。
We produce and sell shaped stainless steel like stainless bars, Angle steel, channel steel, flat steel bars, steel wire, steel billet.
我厂主要生产不锈钢棒、六角棒、方棒、角钢、槽钢、钢带、扁钢、工字钢、钢丝、钢锭等异型材。
We produce and sell shaped stainless steel like stainless bars, Angle steel, channel steel, flat steel bars, steel wire, steel billet.
我厂主要生产不锈钢棒、六角棒、方棒、角钢、槽钢、钢带、扁钢、工字钢、钢丝、钢锭等异型材。
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