selective channel中文是什么意思

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中文翻译
造句

选择通道
选择性通路

selective adj. 1.选择的；挑选的；有选择性的；淘汰的。 2. ...
channel n. 〔常 pl.〕【航海】突出舷侧承扣支索的铁板。
channel selective mode 信道选择方式
selective channel filter 选择信道滤波器
selective channel input bus 选择通道输入总线
selective channel output bus 选择通道输出总线
be selective of 选择为..
selective adj. 1.选择的；挑选的；有选择性的；淘汰的。 2.【无线电】选择性的。 adv. -ly
a channel 左声道
a-channel 左声道; 通道
by-channel 支渠。
channel n. 1.水路，水道，渠，沟；海峡；河床，河底。 2.(柱等的)槽，凹缝；【机械工程】槽铁，凹形铁。 3.〔比喻〕路线，手段；媒介，脉络，系统，途径。 4.【无、电】波道；电路；信道；磁道；频道。 a talk channel通话线路。 a vision channel电视信道，视频信道。 the (English) C- 英吉利海峡。 C- fever 〔英国〕怀乡病。 channelof command [communication] 指挥[通讯]系统。 through a reliable channel通过可靠途径。 through the proper channel 经由正当途径[手续]。 vt. (〔英国〕-ll-) 1.在…开[形成]水道；在…上凿沟[凹缝]。 2.开(路)，开辟(途径)。 3.为…开辟途径，引导。 channel one's interests 对某人的兴趣加以引导。 vi. 形成水道[凹槽]。 n. 〔常 pl.〕【航海】突出舷侧承扣支索的铁板。
channel [a] 如果月亮有眼睛
in the channel 在途货物
s channel s通道
absorption selective 吸收光谱学
assembly selective 选择性组合
collective selective 集选
cox-selective 选择性环氧化酶2抑制剂
decoupling selective 选择性去偶
fabric selective 选择性组构
full selective 全集穴控制）
horizontally selective 水平选择的
reflection, selective 选择反射
selective abortion 选择性流产

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例句与用法

It combines the advantages of ofdm and cdma . it can convert the frequency selective channel propagation of the broadband to flat channel of the subcarrier
它结合了ofdm和cdma技术的优点，能够把宽带频率选择性衰落转化为每子载波的平坦信道。
The protoplasts of arabidopsis were isolated and the voltage - dependent k + - selective channels in the plasma membrane were recorded by whole - cell configuration
O 。的产生部位。我们分离了拟南芥保卫细胞原生质体并记录在不同处理条件下全细胞内向k ”电流的变化情况。
Causes small transmission delay , but computation is complex . the other is called dsova , which does not need to know csi , with low - computation complexity and small transmission delay , and is more suitable in the case when side information is unknown . these two algorithms effectively combine the ofdm technology and the sova algorithm in rayleigh channel , resulting in an efficient sova decoding under frequency - selective channel
另一种是不含信道估计的差分sova算法(简称dsova ) ，该算法不必知道csi ，计算复杂度低，传输时延小，适用于边沿信息( sideinformation ， si )未知的情况，这两种算法将ofdm技术和rayleigh信道下的sova译码算法有机的结合起来，很好地实现了频率选择信道下的sova译码。
So far , there is not much research on the signal detection of da - mimo system , and the general frequency selective channel is not taken into consideration . in chapter 3 of this dissertation , the coherent signal detection algorithms for da - mimo system under both flat fading and frequency selective fading channels are derived . and the analysis of the factors which affect the performance of the detection algorithms is also illustrated through computer simulations
针对分布mimo信号检测目前研究较少,并且没有考虑一般意义下的频率选择性信道的情况,本文在第三章分别推导了基于平坦衰落和频率选择性衰落信道环境的分布mimo信号相干检测算法,并通过计算机仿真,对影响算法检测性能的因素进行了分析讨论。
Space - time block codes ( stbc ) based on orthogonal design has attracts enough attentions in its applications in mimo - ofdm systems for its full diversity exploiting and low coding / decoding complexity . these applications include not only system performance improvement , but also reduction of the peak to average power ratio in mimo - ofdm systems . under these backgrounds , this paper first studies space - time block codes under the single carrier , flat fading situation , discusses the encoding / decoding principle and its performance under different channels . then , the author focused on the performance of space - time codes under time selective and frequency selective channels , uncovered the fundamental cause of how maximum doppler shift and power delay profile influences the performance of space - time codes through deduction and simulation
在上述背景下,本文以单载波,平坦衰落信道下的空时分组码为切入点,深入分析了其编译码原理和在不同信道情况下的性能;以此为基础,后文展开了对空时分组码在多载波,时间选择性和频率选择性衰落信道下的性能研究,通过理论推导和充分的仿真,揭示了空时/频分组码在时频选择性衰落信道中的性能变化的根本原因;在以上对多载波系统中空时分组码的研究的过程中,作者发现了空时分组码在降低系统峰平比方面应用的可行性,提出了一种降低峰平比的新方法。
Combined with the data - selected schemes proposed , the computational complexity of this method can be lowered . the performance of the presented rls method is analyzed by simulations , and it is shown that this method is interesting for application . 4 time - selective channel signal model based on multipath - doppler diversity representation is given in multi - path fast fading channel , and rls space - time receiver algorithm based on time - varied constraint condition is presented and the computational complexity of this method is analyzed
4 、针对多径快衰落信道下的ds - cdma系统，给出了基于多径-多谱勒观点描述的1百安电弓卜科东兔j忆学协士学位论文时间选择性信道的信号模型，提出了基于变约束条件下的递归最小二乘空时接收机算法并分析算法的运算量，最后通过仿真分析了所提出的方法的性能。
The following algorithms have been proposed and tested in the thesis : 1 frequency selective fading : combine the isomorphism between the input space and the output space and propose a new approach to blind equalization of the channel . compared with conventional methods , the new approach offers lower computational complexity , better performance , and more robust against the over - determination of the system order ; 2 time selective fading : a new approach to the equalization of time selective channel based on the zero - forced equalizer is proposed which is more simple in its structure of algorithm ; 3 time - varying channel : using the instantaneous mean value changes of the output signal to extract the information of channel variations and model it using ar model , kalman filter is then employed to track channel variations , it bears faster ability in tracking the variation of tv channels ; based on the isomorphism between the inputs and the outputs and some of the approaches using in mimo system , a new algorithm of equalization of simo time - varying channel is proposed , which also share the merits of being robust against the over - determination of the system order ; model the time - varying channel using the multi - resolution decomposition wavelets , and then a blind identification method based " on the model is proposed ; at last , a new model for equalization and identification of mimo system is proposed
主要工作在以下几个方面： 1 、针对频率选择性衰落信道：结合输入输出空间同构关系提出一种新的频率选择性信道均衡方法，与传统方法相比，该方法计算量更小，收敛速度更快，性能更优，且对系统阶次的过确定表现稳健，具有实际均衡应用价值； 2 、针对时间选择性衰落信道：提出一种基于迫零均衡的时间选择性信道均衡方法，算法结构简单； 3 、针对时变色散信道：利用瞬态均值曲线提取信道时变信息，对之ar建模，利用卡尔曼滤波器跟踪时变信道抽头变化，可以快速跟踪信道变化；基于输入输出空间之间的同构关系以及多输入多输出系统的处理方法，提出了新的单输入多输出色散时变信道均衡与识别算法，同样具有对信道阶次过确定保持稳健的优点；结合小波多分辨率分析提出一种基于小波模型的信道盲识别算法；研究时变的多输入多输出系统的盲均衡与盲反卷积问题，给出一种时变系统处理模型。

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Last modified time:Fri, 15 Aug 2025 00:29:56 GMT