This paper investigates blind space-time interference suppression for MultiCarrier CDMA (MC-CDMA) system in frequency selective Rayleigh fading 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。
In this paper, a blind multiuser receiver for frequency-selective fading channel based on subspace tracking has been presented.
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。
The space-time channel estimation and multiuser detection algorithm for the uplink of multicarrier CDMA (MC-CDMA) system in frequency selective Rayleigh fading channel were investigated.
研究了频率选择性瑞利衰落信道中的同步MC-CDMA系统上行链路空时信道估计及多用户检测算法。
This paper investigates blind multiuser detection for asynchronous DS-CDMA in frequency selective Rayleigh fading channel.
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。
In particular, a large number of propagation paths between transmit and receive antennas can be utilized to combat channel fading effect and gain link reliability.
特别地，能够利用发送天线和接收天线之间的多径分量来抵抗信道衰落影响，并且改善通信链路可靠性。
Therefore a diversity gain can be obtained in a broadband fading channel.
因此，在宽带衰落信道中可获得分集增益。
There are lots of disadvantages in wireless environment, such as multi-paths fading, Doppler frequency shift and fast time varying of channel.
无线环境中存在多径衰落、多谱勒频移和信道快速时变等许多不利因素。
Because of the fading characteristic in troposcatter channel, the mechanism of traditional phase locked loop is difficult to achieve the effect in troposcatter communication.
由于对流层散射信道存在严重的衰落现象，故而传统的锁相环机制在散射通信中往往难以奏效。
The study shows that the algorithm can complete frequency offset tracking in AWGN channel and multipath fading channel.
研究表明，该算法既能在AWGN信道中也能在多径衰落信道中完成频偏跟踪工作。
Differential unitary space-time code(DUSTC) keeps good performance in rapidly fading channels when neither the transmitter nor the receiver knows the channel state information.
差分酉空时码不需要任何信道状态信息，在通信终端处于高速移动环境下的快变衰落信道中仍能保持较好的性能。
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。
In fact, the characteristics of the multipath fading channel in digital cellular mobile communications have become the research of academic analysis and field measure.
实际上，数字蜂窝移动通信中的多径衰落信道特性已成为许多理论分析和现场实测的课题，并已得出了许多有价值的结论。
It is a true blind detection algorithm in that it needs no knowledge of channel fading information as well as time domain and frequency domain spread spectrum codes.
该算法无需时域扩频码、频域扩频码和信道衰落信息，是一种真正意义上的盲的检测算法。
The fractal theory was applied to describe multipath fading channels, and a novel channel estimation scheme using fractal filter in the sense of minimum mean square error (MMSE) was presented.
本文将分形理论引入多径衰落信道的描述，提出了一种利用分形滤波进行最小均方误差意义下信道参数估计的方法。
In this paper, UWB indoor channel models were discussed in time and frequency domain. it's introduced path loss channels and several indoor channel models at small-scale fading.
对超宽带(uwb)室内信道模型在时域和频域进行了讨论，并介绍了在小范围衰落情况下的时域和频域的多种信道模型，以及较实用的路径损耗模型。
Thus the estimation accuracy can be improved distinctly in fast fading channel.
很好的改善快衰落信道估计的准确性。
In shortwave communication system, Intersymbol Interference is serious and signal is distorted extremely because of fading channel resulted in by the effect of multipath.
在短波通信系统中，由于多径效应常常引起信道衰落，直接结果是码间串扰非常严重。
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。
A combined channel estimation method of time-frequency-selective fading channels in MIMO-OFDM systems was proposed.
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。
Based on the propagation regularity of land mobile communication in Beijing, this paper gives the computer simulation model of M-distribution fading wave channel.
根据北京地区移动通信无线电传播规律，在信号快衰落幅度服从m衰落的基础上，给出了M衰落波形信道的计算机仿真模型。
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。
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。
In the wireless fading channel environment, cooperative relaying is an effective way to increase additional diversity gain, and network coding can be used to increase network throughput.
在无线衰落信道环境中，协作中继是一种增加额外分集增益的有效方法，而网络编码可以用来提高网络吞吐量。
In the fading channel with high noise, e. g. mobile communication channel and UWA channel, JSCC gets better performance than separated coding.
在严重噪声的衰落信道(移动通信信道、水声信道等)中，采用联合编码技术比采用分离编码技术更能获得令人满意的效果。
A novel approach is proposed for linear multi user detection in conjunction with transmit diversity to combat channel fading, multi user interference and inter symbol interference.
提出了一种将线性多用户检测与发射分集相结合的新方法，该方法能在克服信道衰落的同时抑制多址干扰和码间串扰。
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。
This paper studies the fading process of signal in the vector channel from the perspective of time domain and space domain.
研究了矢量信道在时域和空间域对信号的影响，即信号的快衰落特性。
With this model, the blind multiuser detection and iterative algorithm of MC-CDMA systems based on subspace projection are studied in the multipath fading channel.
由于其在对抗多径衰落方面具有显著的效果，它适合于在无线移动通信信道下使用，因而得到广泛的研究。
With this model, the blind multiuser detection and iterative algorithm of MC-CDMA systems based on subspace projection are studied in the multipath fading channel.
由于其在对抗多径衰落方面具有显著的效果，它适合于在无线移动通信信道下使用，因而得到广泛的研究。
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