你的信号相当弱，信号衰落了。
提出了一种在有固定中继的蜂窝网络中使用信号衰落差值进行移动定位的方案。
This paper proposed a positioning scheme based on differences of signal fading in cellular system with fixed relays.
许多通常的多媒体信号处理，如剪切、滤波、感知编码等，引起了水印信号衰落状的偏倚。
Many common multimedia signal processing, including cropping, filtering, and perceptual coding, make watermark signal fading-like modification.
由于无线网络中存在高误码、信号衰落、切换等原因，使得传统TCP的应用受到了挑战。
The application of TCP over wireless networks is a challenging work due to high bit error rates and fading and handoff.
其中主要为无线衰落信道中的多径传播和散射引起的信号衰落，以及大的多径时延而引起的符号间干扰。
The problems mainly exhibit to be multi-path propagation in the wireless fading channel, signal fading caused by the scattering and Inter-Symbol Interference caused by the long multi-path time delay.
TTIB（透明带内导音）及FFSR（前馈信号再生）技术是一种可抗无线信道中多径时延及多谱勒频移引起的信号衰落的技术。
Transparent tone-in-band(TTIB) and feedforward signal regeneration(FFSR) is a technology to combat the effects of multipath propagation delay and doppler effect in wireless channels.
采用琼斯矩阵法分析了法拉第旋转镜消除偏振诱导信号衰落的原理，阐述了基于磁致伸缩的光纤迈克耳孙干涉型磁场传感器基本原理。
The principle that Faraday rotator mirror eliminates polarization-induced fading was analyzed by means of Jones matrix. And the basic principle of the sensor was described.
介绍了BCCH载波与TCH载波的频率配置、信号衰落算法、干扰原理、动态功率控制的调节思路，以及提高网络质量，改善小区登陆与切换性能的措施。
I introduce the frequency allocation between BCCH carrier frequency and TCH, signal fading arithmetic, interference theory and the adjusting thinking of dynamic power control.
在市场看来，这些救援是贝尔斯登衰落的信号，而不会给人带来希望。
The rescue was seen in the market as a sign of weakness rather than one of hope.
还是美国衰落的信号？
对实测数据的分析结果表明，分形模型与传统的统计模型相比能更精确地描述多径衰落信号。
Simulation results from practical measured signals demonstrate that the fractal model can describe multipath fading signals more accurately compared to the conventional statistical models.
本文提出了一种基于改进的神经网络(MNN)的自适应闭环功率控制算法，该方法平滑了移动信道衰落的影响，使基站接收到的小区中所有用户的信号功率相等。
In this paper, a Modified Neural Network (MNN) based power controller is proposed to smoothen out the fast fading and keep the received signal power from each user constant at the base station.
作为实例，给出了高斯信道和衰落信道上的一些TCM信号序列的自由空间距离的计算结果。
As some examples, the results of some TCM signal sequence on additive Gaussian white noise (AWGN) channel and fading channels have been presented.
在实际通信系统中当信号处于深衰落时，最小均方误差(MMSE)检测器经常失去对信号的相位跟踪。
It is noted that the minimum mean square error (MMSE) detector often loses phase to lock a desired signal when the desired signal dips into a deep fade.
在宽带信道模型的基础之上，从理论上分析了电波信号通过电离层信道所经受的衰落影响。
Based on the ITS channel model this paper theoretically discusses the fading effect of the ionosphere to the signal which is reflected by the ionosphere.
分析表明，角度扩展和阵元间距是影响接收信号空间衰落相关性的主要因素。
The resulting analysis indicates that the angular spread and spacing between elements are main factors effecting on spatial fading correlation of received signals.
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.
在平坦衰落假设基础上，分析了QPS K信号通过移动卫星信道的非线性性能。
The performance of QPSK signal transmitted through nonlinear mobile satellite channel is analyzed based on presumed frequency non-selective fading.
如果各次发送的时间间隔足够大，那么各次发送信号所出现的衰落将是彼此的。
If the time interval among the transmissions is long enough for each time, the fading presented by the transmission of the signal will be mutual for each time.
空时编码采用多发送天线设计信道编码，联合考虑分集、编码与调制，从而提高信号在无线衰落信道中传输的可靠性。
The design of channel codes for improving the reliability of communications over fading channel using multiple transmit antennas is considered.
分析了莱斯衰落信道中FSK信号的非相干接收机误码率。
The BERs of a noncoherent receiver for FSK signal in Rician fading channels is given.
在此基础上提出了一种新的无线信道模型；结合分形插值方法，对多径衰落信号的重构进行了研究。
Then a novel channel model is proposed and fractal interpolation is applied to reconstruct the signals.
利用FPGA作为数字信号处理平台来实现可调的衰落带宽以及多径延时。
The adjustable fading bandwidths and additional long delays were implemented by using the relative new signal processing technologies of FPGA device.
仿真结果表明，在AWGN加性高斯白噪声和相关瑞利衰落信道下，系统性能均有显著改进，并能有效克服GMSK信号所固有的严重符号间串扰ISI。
Simulation results show an evident improvement in AWGN and correlated Rayleigh fading channels. The severe intersymbol interference (ISI) of GMSK signals is also effectively suppressed.
针对衰落信道中广泛存在的多普勒频移现象，本文提出了一种MPSK信号数字化识别解调的方法。
A new method for digital identification and demodulation of MPSK signals is presented under the condition of the Doppler frequency shift of channel attenuation.
通过仿真，研究了这一系统在移动通信环境下的性能，包括信道衰落、信号角度扩散及同频干扰用户等对DOA估计的影响。
We studied the performances of this system by simulations, including the impacts of channel fading, angle spread and co-channel interference on DOA estimation.
考虑到阴影衰落和快衰落对于接收信号的影响，接收到的有用信号和干扰信号是随机变量，相应的载干比也是随机的。
Considering the effect of the shadow fading and fast fading on the receive signal, the received useful signal and interference signal should be random variables which change continuously.
对设备的测试结果表明：模拟的衰落信号的包络统计与理论统计特性和实验观察基本一致。
Envelope fading distributions statistics produced by this device show close agreement with theoretical statistics and documented experimental data.
给出了该方案的OFDM系统仿真结果，验证了OFDM信号的白噪声特性和OFDM通信系统较强的抗频率选择性衰落特性。
Finally the simulating result is presented, which validates white noise characteristic of the OFDM signal and the characteristic of anti-attenuation of frequency-selected of OFDM communication system.
本文研究多径衰落信号的多重分形性质，分析并指出了信号多重分形维数是描述无线信道传播特性的重要参数；
Fractal characteristic of multipath fading signal is studied in the paper which shows that multifractal dimension is a key parameter for describing the signal propagation in wireless channels.
应用推荐