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.
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。
Secondly, power line noise channel and multi-path channel optimization modeling techniques based on artificial neural network are proposed.
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。
Compared with single channel single - path routing scheme and multi - path routing scheme, the results of simulation show that this model has better network performance.
仿真结果表明，相对单通道单路径路由及多路径路由本模型能更好的改善网络性能。
Simulation shows co-channel interference and maximum multi-path delay spread have significant impact on the BER performance and PDMRC gives the best performance in most common environment.
仿真表明同信道干扰与最大多径延迟扩展对系统性能影响很大，在通常情况下采用PDMRC具有最好的性能。
A dual path and multi channel fast measuring system for object color are described in this paper.
介绍一种用于物体色快速测量的双光路多通道系统。
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.
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。
The first chapter introduced the characteristics of the wireless channel, the small-scale fading model, multi-path fading model and WSSUS channel model.
本文第一章绪论首先分析了无线信道的特性，介绍了小尺度衰落模型，多径衰落模型以及WSSUS信道模型。
Therefore, how to enhance the transportation performance of the system is closely related to the scheme adopted for countermining the channel multi-path effect.
因此，如何提高系统的传输性能和采用何种方案对抗信道的多径效应是很有关系的。
OFDM has the ability of transforming the frequency-selective channel into a collection of parallel flat-fading subchannels and therefore can be adopted in MIMO systems to combat multi-path effects.
OFDM技术可以把频率选择性衰落的信道转化成一组正交的平坦衰落的信道，因此可将OF DM技术应用在MIMO系统中来克服多径衰落的影响。
Based on the characteristic of multi-path frequency selective channel, the algorithm combines rapid table lookup and Lagrange-multiplier method to iteratively search the optimal bit allocation scheme.
算法根据多径信道选择性衰落的特性，结合查表法和拉格朗日乘子的混合迭代搜索法，最优地分配各个子载波的传输比特数。
There are two serious challenges in the future broadband wireless communication systems: multi-path fading in the wireless channel and spectral efficiency.
在未来的宽带无线通信系统中，存在着两个严峻的挑战：无线信道的多径衰落和频谱效率。
In wireless link, Packet loss may caused by the high channel bit error rate and nodes mobile, and multi-path routing and node switching will lead to reorder.
对于无线网络，信道的高误码率和节点移动等会导致丢包，多路径路由和节点移动切换等会导致乱序。
The subject of this paper mainly focuses on the research of new algorithms and proposes the channel estimation principle explicitly: separate the estimation of multi-path amplitude and delay.
本文主要致力于研究新的信道估计算法，明确提出了将多径信道的时延估计和幅度估计分开的信道估计方案。
The theoretical and simulation analysis about acoustic signal processing in multi-path channel and the engineering software design are given in the dissertation.
该系统采用主动工作方式，本文系统地研究了在多途信道中对声学信号进行处理的理论研究和仿真分析及工程软件设计。
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.
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。
The transmitting environment of MIMO system is always a mobile and multi path environment, so the receiver must get rid of the inter symbol interference and the inter channel interference.
MIMO系统的传输环境是移动的多径衰落环境，因此接收端必须消除接收信号的符号间干扰利通道间干扰。
OFDM is a high transmission technology in the wireless propagation environment. It is fitted to transmit high-speed data in the wireless channel which has multi-path delay and Doppler frequency shift.
OFDM是一种无线传播环境下的高速传输技术，适合在多径传播和多普勒频移的无线信道中传输高速数据。
This paper will introduce the channel models for UWB, which include path loss models and multi-path fading models obtained by large measurements and statistical analysis.
本文主要介绍由实验测量和统计分析方法得到的UWB信道模型，包括UWB系统的路径损耗模型和多径衰落模型。 u。
Then mathematic model of multi-path Rayleigh fading channels are presented based on the discussion of mobile fading channel characteristics. At last, the simulation results and analysis are given.
然后在分析移动信道衰落特性的基础上，分析了多径瑞利信道的数学模型，并对基于这种模型的各种信道估计性能进行了仿真分析。
The system works in active mode. The theoretical and simulation analysis about acoustic signal processing in multi-path channel and the engineering software design are given in the dissertation.
该系统采用主动工作方式，本文系统地研究了在多途信道中对声学信号进行处理的理论研究和仿真分析及工程软件设计。
The mixture matrix of multi-path channel can be estimated using a fast fixed-point algorithm, and then the delay information of channel can be obtained.
该方法采用固定点ica算法来估计多径信道的混合矩阵，从而提取信道的延迟信息。
The MB-OFDM UWB systems can capture multi-path energy more efficiently than DS-UWB. Much work has been done on the channel estimation of traditional narrow-band OFDM.
与直接序列扩频的方案相比，基于多频带OFDM的UWB系统能更有效地捕获多径能量。
The wireless channel is usually unreliable, and it mainly suffers from time-varying fading due to multi-path propagation.
它具有由于时变多径传输产生的衰落、时间延迟扩展等有害影响。
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.
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。
A multi-path routing and interface assignment is proposed for multi-interface multi-channel MANETs.
针对多接口多信道MANET网络环境，提出了一种多径路由以及相应的接口分配策略。
A multi-path routing and interface assignment is proposed for multi-interface multi-channel MANETs.
针对多接口多信道MANET网络环境，提出了一种多径路由以及相应的接口分配策略。
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