英汉例句

• therefore, ofdm technique can convert a wideband rayleigh fading channel to a series of narrowband flat fading channels, which makes the equalization for a high speed rate system simpler.

  正交频分复用（ofdm）技术可以把宽带频率选择性衰落信道变为多个窄带平坦衰落信道，有效地降低高数据速率通信系统均衡的复杂度。

• on this basis, the space-time trellis codes and decoding principle and flat fading channel coding guidelines are introduced.

  在此基础之上介绍了空时网格码的编译码原理和平坦衰落信道下的编码準则。

• the changes of flat fading and in band amplitude dispersion with the atmospheric conditions are oh tamed by computer radom simulation. meanwhile, some new and important conclusions are abc given.

  利用计算机随机模拟了平衰落与带内色散及相关系数随气象条件的变化关系，得到了一些新的、较为重要的结论。

• 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。

• the channel of uav los datalink is mainly an interferometric flat fading channel, in which frequency selective fading and time selective fading can occur.

  无人机视距数据链的信道类型主要是一个干涉型平衰落信道，但也可能发生频率选择性衰落、时间选择性衰落。

• 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。

• this paper presents a baseband discrete-time state-space model for generation of rayleigh md(multiplicative distortion) in a frequency flat fading channel.

  本文首先提出了在插入无调制片和匹配滤波接收机条件下，频率衰落信道的瑞利乘性畸变的简单基带离散模型。

• by means of user-defined m files in matlab modeling typical flat fading channel such as rician fading channel and rayleigh fading channel are derived, comprising with and without doppler shift.

  首先解释移动信号多径传播和因此造成的衰落的基本特性，然后重点对常见的瑞利衰落和莱斯衰落进行仿真。