The problem of channel estimation and tracking for MIMO time-varying frequency-selective channels is investigated based on training sequences.
本文主要研究了基于训练序列的多输入多输出（MIMO）时变频率选择性衰落信道的估计与跟踪问题。
Simulation results demonstrate the validity of the novel labeled-delay transmit diversity scheme and the performance of the blind estimation of frequency-selective channels.
仿真结果表明了上述标签延迟发射分集方法的有效性及其信道盲估计方法的性能。
The bandwidth efficiency and ability to combat the effects of frequency selective channels are critical issues in the design of wideband wireless digital communications system.
在宽带无线数字通信系统中，影响信息高速传输的最主要的一类干扰是由信道的多径效应所引起的频率选择性衰落。
In order to extend it to frequency-selective channels, a detection scheme for V-BLAST over frequency- selective channels, which is based on space-time MMSE criterion, is proposed.
提出了基于空时MMSE准则的频率选择性信道下V-BLAST检测方案，并给出了最佳均衡条件和两种自适应空时均衡算法。
The model of the MIMO-OFDM system in doubly-selective channels is derived and a lower bound of mean squared error(MSE) of the channel estimator using frequency domain pilot is presented.
基于双衰信道的频域响应，提出了一类双衰信道下多天线正交频分复用（MIMO-OFDM）系统的最优化频域导频设计方案。
And all ion channels are selective for a single type of ion, and we can think about how that selectivity takes place, and that's where this idea of atomic radius is going to become very important.
所有的离子通道都是仅对某一种离子具有选择性的，而我们可以来想一想这种选择性是如何发生的，这也就是原子半径这个概念将会变得，非常重要的地方。
With the 5.1 release, the enhancements to the Web Services Gateway include support for SOAP/HTTP, SOAP/JMS channels, and enhanced performance through selective parsing.
版本 5.1 对Web服务网关的提高包括支持SOAP/HTTP、SOAP/JMS通道和通过选择性解析提高性能。
Since you are very selective of your reading material, then what impression you get from the media channels on China?
正因为你对阅读材料这么挑剔，那么从这些媒体，你对中国得到了什么印象呢？
V-BLAST (Vertical Bell Laboratories Layerd Space-Time) can be combined with OFDM to achieve high data rate transmission in frequency selective fading channels .
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。
Paiker dry pavement installed heating system applies to 1216,1417,1620, 1214 models pipes . Paving the template can use six selective different channels.
派克干装系统适用1216、1417、1620、1214等型号管材，铺装万能模板提供了六种不同管道间距的使用选择性。
The tapped delay model of the multi-path frequency selective fading channels as well as the diversity receiver technique is introduced, and the principles of RAKE receiver are described.
本文首先讨论了移动通信信道的各种参数对信道估计的影响，介绍了频率选择性信道的抽头延迟线模型和分集接收技术，在此基础上阐述了RAKE接收机的原理。
Evaluation has been made of the existing flow measurement techniques. Selective and adoptive models which apply to the flow measurement techniques of different U-shaped channels have been given.
对已有U形渠道量水技术进行了比较评价，提出了适宜于不同规格U形渠道的量水技术与设施的选配模式。
Most of the TRP channels are voltage independent and non selective cation channels.
绝大多数TRP离子通道为非电压依赖性、非选择性阳离子通道。
MA method, a novel MPS (minimum power sum) approach based on a distributed NSCs is proposed after the frequency selective property of wireless channels is considered.
MA计算复杂度较高，在充分挖掘无线信道频率选择性特点基础之上，我们提出了一种新的分布式零载波的最小功率和方法。
Time-selective Rayleigh fading of channels is caused by Doppler shift and carrier frequency offset.
接收端的高速运动或者载频的偏移，会引起信道的时间选择性衰落。
In modern shortwave communication systems, the channels are mostly frequency-selective, multipath transmission causes the coherent attenuation and symbol interference.
现代短波通信系统，其信道大多数具有频率的选择性，多径传输产生了信号的相干衰落与符号干扰。
In the process of channels development, I will analyze how TTC Company decide the channel structure, design selective criteria of channel members, set offices and select channel members.
在渠道开发过程中，文中分析了TTC公司如何决定渠道的结构、设计渠道成员选择标准、建立办事处、选择渠道成员；
This paper proposes an Adaptive Joint Selective Repeat ARQ protocol for multiple wireless Markov channels.
文章提出了一种基于多个马尔可夫信道的自适应联合选择重发ARQ协议。
The selective permeability mechanism of HSM and the forms of the channels in the HSM were also discussed in this paper.
本文还对该选择性分离膜的选择透过性机制进行了探讨，分析了膜内可能存在的孔道形式。
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。
The selective toxicity of pyrethroids for insects probably resulted from configuration differences of the sodium ion channels in nerve cells between insects and mammals.
拟除虫菊酯类杀虫剂对昆虫的选择毒性很可能是因为昆虫神经元的钠通道结构与哺乳动物的不同。
The results showed that PTL-channels werecation selective.
结果表明，半夏凝集素形成的通道为阳离子通道。
In the future broadband wireless communications, there will be two severe challenges to be faced, which are frequency selective fading channels and bandwidth efficiency.
在未来宽带移动通信中，存在两个最严峻的挑战：多径衰落信道和带宽效率。
In this paper, we propose a diagonal space-frequency (DSF) block codes over frequency-selective Rayleigh fading channels and study performance of the code.
本文提出了频率选择性瑞利衰落信道中的对角空频分组码(DSF)，研究了码的性能。
This letter present a differential space-frequency coded orthogonal frequency-division multiplexing (OFDM) scheme over frequency-selective fading channels.
本文提出了频率选择性衰变信道中采用了差分空频编码的正交频分复用(OFDM)传输方法。
This letter present a differential space-frequency coded orthogonal frequency-division multiplexing (OFDM) scheme over frequency-selective fading channels.
本文提出了频率选择性衰变信道中采用了差分空频编码的正交频分复用(OFDM)传输方法。
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