英汉例句

• with mcm techniques, system performance in ber can be improved remarkably over frequency selective fading scenarios when high data rate is required.

  在频率选择性衰落信道中，mcm技术可以大幅度提高系统的误比特率（ber）性能，特别是在高速数据传输的场合。

• 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。

• in addition, there will be frequency selective fading in the future broadband mimo wireless communication systems, and the traditional high-performance equalizer will become extremely complicated.

  另外在未来宽带mimo无线通信系统中，通常面临频率选择性衰落信道，传统高性能均衡器就会变得异常复杂。

• a two-ray model is used for the frequency selective fading channel.

  频率选择性衰落信道采用了两径模型。

• mimo-ofdm utilizes stc or sfc (space-frequency code) to introduce the frequency diversity, so better performance will be achieved in the frequency selective fading channels.

  ofdm采用空时编码或者空频编码，就可以在频率上也引入分集，从而在频率选择性衰落的信道上也取得较好的性能。

• in this thesis, we study equalization techniques for ofdm over the frequency selective fading channel and doubly selective fading channel respectively.

  本文的研究内容就是频率选择性衰落信道和双衰落信道下的ofdm信道均衡技术。

• the paper introduces the effect of i/q imbalance about ofdm receiver in awgn and frequency selective fading channel firstly;

  本文首先介绍了射频i/q不平衡时对高斯以及频率选择性信道下ofdm接收机性能的影响；

• in this paper the performance of uplink in the cellular cdma network, based on the reception of smart antenna, is analyzed in the frequency selective fading channel.

  本文分析了在频率选择性信道中基于智能天线阵接收的蜂窝cdma网络上行链路的性能。

• using ofdm technology, drm system improves the frequency band utility, decreases the frequency selective fading caused by multi-path effect, and wakens the doppler shift.

  drm采用ofdm信道调制技术，提高了频带利用率，降低了多经效应引起的频率选择性衰落，多普勒频移等干扰。

• the time- and frequency- selective fading channel is so-called doubly selective fading channel.

  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。

• v-blast (vertical bell laboratories layerd space-time) can be combined with ofdm to achieve high data rate transmission in frequency selective fading channels .

  技术可以和ofdm技术结合以便在高的频率选择性衰落信道下提供高数据率的传输。

• ofdm, which can resistant to frequency selective fading and impove the transmission rate, is a multi-carrier modulation technique.

  ofdm技术能有效对抗频率选择性衰落，提供高速率传输，其实质是一种多载波调制技术。

• then, we proposed a maximum doppler spread (mds) estimation algorithm for ofdm systems with the comb-type pilot pattern in doubly selective fading channels (dsfc).

  本文介绍正交频分复用系统（ofdm）在双选择性衰落信道中的参数化信道估计以及信道统计量分析等若干问题。

• the new coded strategy can achieve full space-time-frequency diversity over frequency selective fading channel.

  在频率选择性信道中，新编码策略可以获得空时频全分集增益。

• 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。