该方法首先通过修正后的TST - MUSIC算法估计多径的传播时延和角度。
In the algorithm, the propagation delays and the angles of multipath are firstly estimated by a modified TST-MUSIC algorithm.
本文从提高无线移动传输系统传输速率和对抗多径的角度,研究OFDM调制技术在无线移动通信中的应用。
The thesis researches the application of OFDM modulating technology on mobile communication based on improving transfer effect in limited band broad and overcoming Multi_path fading.
由于UWB主要应用在密集多径的室内环境,所以研究多径效应造成的码间干扰对于设计高速uwb系统非常重要。
For UWB is mostly applied in dense multipath indoor circumstance the study on Inter Code Interference (ICI) caused by multipath is very importance for designing a high rate UWB system.
由于UWB主要应用在密集多径的室内环境,所以研究多径效应造成的码间干扰对于设计高速uwb系统非常重要。
UWB is mostly applied in dense multipath indoor circumstance. The Inter Chip Interference (ICI) caused by multipath is very important for designing a high rate UWB system.
本文针对多径的影响,分析了多径情况下的信号模型,并采用基于高阶累积量的方法来解决多径情况下的DOA估计。
In this paper, we analysis signal model of multi-path environment, and use high order cumulant method, together with some general DOA estimating method, to estimate DOA of multi-path accurately.
通过TD-SCDMA智能天线移动终端接收特性的数值模拟,对智能天线算法进行了分析,并深入分析了智能天线对多径的抑制作用。
Presents an overall link level simulation of mobile terminal receiver structure with smart antenna for TD-SCDMA. Three smart antenna algorithms are simulated and compared.
我们还分析了在多用户多径分集方案中如何支持可变质量可变速率的多媒体业务。
We also analyze how to provide multimedia services with the variable quality and variable information rate in the proposed system.
但是电力线信道上存在的各种噪声、衰减和多径传播等问题,这些都大大提高了通信的难度。
But the noises, the attenuation and the multipath propagation inhering in the powerline make it very difficult to realize such kind of communication system.
但是这种正交性却被多径衰落信道破坏,产生了多码道干扰,严重影响了系统高速传输数据的性能。
The orthogonality, however, is impaired by multipath fading channels, thus causing multicode interference (MCI) and deteriorating the system's performance at high data transmission rates.
第二章分析了无线信道的多径效应和小尺度衰落效应。
The second chapter of this paper analyzes the multipath effects and fading effects of wireless channel.
该方法能准确地进行多径传输情况下的时间延时估计,有效地抑制干扰和噪声的影响。
Multi path time delays are estimated precisely with this approach, and disturbances and noises can be refrained effectively.
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.
提出的辅助判决均衡器在用于滤波多音调制系统时,可克服判决反馈均衡器在多径信道下的地板效应。
For the FMT system, a decision-aided equalizer could overcome the floor effect of the decision feedback equalizer which is caused by the multi-path channel.
径向轴径轴承的种类为多楔径向轴径轴承。
GPS接收机的误差受多种因素影响,多径干扰便是其中一项。
The GPS error is influenced by a lot of factors, one of them is multipath effect.
脉冲超宽带(IR - UWB)信号在密集多径环境中存在严重的时间弥散,会产生波形失真。
In dense multipath environments, IR-UWB (impulse Radio-Ultra Wideband) signals suffer from severe time dispersion which distorts the impulse wave.
其次,提出了电力线噪声信道和多径信道的神经网络优化建模方法。
Secondly, power line noise channel and multi-path channel optimization modeling techniques based on artificial neural network are proposed.
众所周知,水下声信道是相干多途信道,信号在信道中的多径传播使得接收信号序列复杂化,因而极大地增加了信号处理的难度。
It's well known that underwater acoustic channel is a coherent multi-path channel, which brings difficulties in signal processing because of the complexity of the received signal sequence.
这对于在移动数字通信中,改善由多径效应引起的误码率增高而严重影响通信的传输质量,具有非常重要的指导作用。
It is an important action to improve the propagation quality of communication suffered from rising the BER on multipath propagation in digital mobile radio communication.
超宽带信号经多径信道传播会产生严重的时间弥散。
In multipath environments, ultra-wide band signals suffer from severe time dispretion.
正交频分复用(OFDM)是一种新型调制技术,特别适合在多径传播的无线移动信道中高速传输数据。
OFDM (Orthogonal Frequency Division Multiplexing) is a new modulation technology, it is suitable to high-data-rate transmission in the wireless transfer channel with multi-path transmission.
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.
仿真结果表明,与ML算法相比,该算法大大提高了系统的同步性能,尤其是在多径信道中的性能得到了很大提高。
Results of simulation and analysis show that, in comparison with ML algorithm it is of better synchronization performance, and its performance is considerably raised especially in multipath channels.
提出了一种能够抑制多径干扰的基带波形设计方法,该方法是通过保持传输信息速率不变,在成形滤波器第二个零点叠加信号来实现的。
A waveform design method that can restrain the multipath effect was proposed. It was achieved by placing signal on the second zero point of waveform filter and keeping the information rate.
接下来论述了激光通信中多径效应的特殊性。
Then this paper discusses particularity of multipath effect of laser.
在稳态时,此方法还具有对多径信号分集接收的潜力。
In the stable state, this method has the potential of diversity reception for multi-path signals.
井下无线信号的传输属于有限空间的信号传输,多径效应的影响是比较严重。
Underground wireless signal transmission belongs to the transmission of limited space, and its multi-path effects are more serious.
当采用相关法估计时间延迟时,多径时延的分辨率受到相关函数主(?)宽度的限制。
Multipath time delay estimation is constrained by the width of the signal correlation function when using correlation method.
当雷达在低仰角跟踪时,降低多径误差的阵列天线波束的形成技术,可消除或降低低仰角跟踪目标时的测量误差。
During radar tracking target in low elevation, the measuring error of tracked target was removed or reduced with array antenna beam forming technique that can reduce the multi-path error.
仿真结果表明,在低信噪比的多径信道下,该算法可通过选择合适的训练符号,使错检概率低于常规算法。
The simulation results indicate under multipath channel for low SNR, the new algorithm has lower probability of failure than the conventional algorithm by adopting proper training symbols.
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