表层传播一般都有频率选择性。
The superficial layers are often frequency selective to transmission .
表层传播一般都有频率选择性。
The superficial layers are often frequency selective to transmission.
频率选择性衰落信道采用了两径模型。
A two-ray model is used for the frequency selective fading channel.
且耦合电容具有频率选择性。
织物对声波的衰减作用具有频率选择性。
The decline effect of fabric on sound wave has the chractaristic of frequency alternative.
频率选择性是神经元具有的内在特性之一。
Frequency preference represents an intrinsic property of neurons.
新的方向滤波器组具有良好的方向和频率选择性。
The new DFB can provide good directional and frequency selectivity.
一般的，信道既是频率选择性的又是时间选择性的。
Generally the channel is both frequency selective and time selective.
并针对频率选择性信道采用了多符号平均改善算法性能。
In order to improve performance of this method over frequency selective channel, we average over several symbols.
跳频同址干扰具有频率选择性，是典型的长脉冲响应干扰。
Frequency-selective frequency hopping(FH) cosite d interference is a typical long impulse response interference.
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。
The new coded strategy can achieve full space-time-frequency diversity over frequency selective fading channel.
它具有频率选择性好，通带插损低，对陷波频点抑制较高的优点。
It is characterized by good frequency selectivity, low insertion loss and high attenuation of specified frequency.
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.
对于无线通信系统，无线信道不仅是频率选择性的，而且是时变的。
However, for the wireless mobile communication systems, the radio channel is frequency selective and time-varying.
频率选择性快衰落信道的精确估计对接收机性能的提高起着重要作用。
The receiver performance can be greatly improved by precisely estimating frequency-selective fast-fading channel information.
因此在频率选择性衰落信道中，采用分集接收可以改善系统的捕获性能。
Therefore, system acquisition performance can be improved if diversity receiver is adopted for the frequency-selective fading channel.
其次，我们对适合频率选择性衰落信道的空频码提出了一些独创性的想法。
We derive the condition of the space-frequency codes to achieve maximum achievable diversity gain.
在新一代移动通信系统中，频率选择性信道是系统所要面对的一个关键问题。
Frequency selective channel is one of the important problems in new generation mobile communications, and equalization technologies are applied to combat the influence of this channel.
该文研究在频率选择性瑞利衰落信道中MC-CDMA系统的盲空时干扰抑制。
This paper investigates blind space-time interference suppression for MultiCarrier CDMA (MC-CDMA) system in frequency selective Rayleigh fading channel.
为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。
Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
提出一种基于信号子空间估计，用于频率选择性衰落信道的盲多用户自适应接收机。
In this paper, a blind multiuser receiver for frequency-selective fading channel based on subspace tracking has been presented.
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。
In this thesis, we study equalization techniques for OFDM over the frequency selective fading channel and doubly selective fading channel respectively.
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。
V-BLAST (Vertical Bell Laboratories Layerd Space-Time) can be combined with OFDM to achieve high data rate transmission in frequency selective fading channels .
该文研究了频率选择性瑞利衰落信道中的异步ds - CD MA系统盲多用户检测。
This paper investigates blind multiuser detection for asynchronous DS-CDMA in frequency selective Rayleigh fading channel.
他能有效地对抗多径效应，消除符号间干扰，对抗频率选择性衰落，而且信道利用率高。
It can waken the multipath effect availably, eliminate symbol interference and fight against frequency select fading. Moreover, the channel utilization rate is high.
该文着重研究MCV - BLAST系统在下行频率选择性衰落环境中的解码问题。
This paper explores the decoding problem of the MC V-BLAST system under the downlink frequency-selective fading environment.
提出了一种适用于频率选择性衰落信道，新的下行多用户MIMO系统预处理传输方案。
A new transmission scheme, which combines transmit preprocessing with multiuser MIMO downlink system over frequency-selective fading channel is proposed.
重点分析了实现信道特性仿真的两种算法：慢衰落的相关性整形和频率选择性多径衰落。
Two simulation algorithms of realization channel characteristic are analyzed emphatically: shaping of slow fading with correlation and generation of frequency-selected multipath fading.
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cd MA网络上行链路的性能。
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.
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.
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