channel distortion
英 [ˈtʃænl dɪˈstɔːʃn]
美 [ˈtʃænl dɪˈstɔːrʃn]
网络 信道失真; 通道失真; 失真
双语例句
- The influence of FM channel linear distortion on Group-Frequency signals
调频通道的线性失真对群频信号的影响 - A Channel Distortion Estimation Model Based on MPEG-4 Coding Bit Stream
一种基于MPEG-4视频编码流的信道失真模型 - Channel equalization, used to eliminate inter-symbol interference and compensate channel distortion, is a filtering method which can correctly rebuild the sent signal in receving end.
信道均衡是用来消除码间串扰、对信道畸变进行补偿，从而在接收端正确的重建发送信号的滤波方法。 - Because of channel distortion and carrier frequency offset, both adaptive equalization and carrier recovery should be taken into account for high-order quadrature amplitude modulation ( QAM) demodulation.
高阶QAM解调时，由于信道失真以及载波频偏相互影响，自适应均衡与载波恢复需要同时考虑。 - Modern wireless communication, especially signal interception, which is characterized by low power and high transmission rate, urgently requires noncooperative receiving technologies with lower signal-to-noise-ratio threshold performance and better ability against serious channel distortion. Equalization and synchronization are key technologies for effective receiving of distorted signals.
现代无线通信技术高速、低功率的发展趋势以及信息截获本身固有的特点，对信噪比门限低、抗信道衰落和失真能力强的非合作接收技术提出了迫切的需求。 - By evaluating the channel distortion and source distortion of all macroblock modes, the optimal macroblock mode is selected adaptively to minimize transmission distortion.
通过估算不同宏块模式的信源失真和信道失真，自适应地选择最佳编码模式，使得视频序列的整体传输失真最小。模拟实验显示，相对于H。 - The non-linear decision feedback equalizer has well compensated channel distortion.
采用判决反馈模式的非线性均衡器，更好地补偿了信道畸变。 - The mathematic model of synchronization configuration is described, and numeric simulations are conducted to evaluate the synchronization performance when the adaptive controller is employed with constant and time-variant channel distortion considered.
给出了系统的数学模型，对恒定信道衰变和时变信道衰变两种非理想信道条件下的混沌Colpitts电路的自适应同步进行了数值仿真研究。 - Analytic Channel Distortion for Video over Wireless Network
无线网络中视频传输的信道失真分析 - Research on the Wireless Channel Distortion Based on Progressive Fine Granularity Scalability Coding
基于PFGS的无线信道失真度的研究 - More and more attention has been paid to OFDM technology in wireless data transmission systems because it is effective to suppress channel distortion.
正变频分复用（OFDM）技术因能有效抑制信道畸变而在无线数据传输中受到广泛的关注。 - In packet based wireless video communications, when best band distribution, not only source distortion should be considered, but also channel distortion caused by channel errors.
在基于包的无线视频传输中，最佳带宽分配时，不仅要考虑信源编码失真，也要考虑由于信道差错引起的信道失真； - Network Data Analysis of Channel Distortion for Video over Internet
基于Internet网络的视频传输失真分析 - Based on this model and the coding modes of the video encoder, the channel distortion of inter-coding and intra-coding due to burst error is deduced.
根据该模型和视频编码器的编码方式推导了突发性出错引起的帧内编码和帧间编码的信道失真。 - In multipath FIR channel transformation, the intersymbol interference caused by channel distortion is one of the main interferences which influence the performance of band-limited channels.
在多径信道传输中，由于信道畸变而造成的符号间干扰是影响带限通信信道性能的重要因素之一。 - Simulation results indicate that with adaptive controller synchronization performance between the drive and response system of the chaotic Colpitts circuit pair can be significantly improved under constant and slow varying channel distortion.
仿真结果表明，对于恒定或慢变化的时变信道衰变，自适应控制器可以有效的提高Colpitts电路响应部分和驱动部分（Drivesystem）的同步性能。 - The model for the wireless multimedia transmission was analyzed; the relationship among source coding distortion Ds, the channel distortion Dc, and the rate distortion of the transmission system D were discussed;
分析了多媒体无线传输模型，并讨论其中的信源编码失真度DS、信道传输失真度DC、系统总体失真度D及其相互的关系。 - Simulation results show that the presented DFE structure can deal with serious channel distortion and frequency offset.
仿真结果证明，在信号经过恶劣信道且具有较大频差的情况下，该DFE结构的均衡性能令人满意。 - With introduction of cross-correlation items between outputs of different equalizers in the cost function, channel distortion is compensated, ISI and MUI are restrained.
通过在代价函数中引入不同均衡器输出的互相关项，在一定程度上补偿了信道畸变，抑制了ISI和MUI，接收端能够有效恢复发射天线的发送信息。 - Channel distortion and multipath will create inter-symbol interference ( ISI), then the validity and reliability of data transmission is greatly reduced, affecting the quality of data transmission, usually through equalization to compensate for ISI.
信道畸变和多径效应会使信号产生码间干扰（ISI），使数据传输的有效性和可靠性都大大降低，影响数据传输的质量，一般通过均衡技术对ISI进行补偿。 - Two major factors that limit the performance of DS-CDMA systems are multipath channel distortion and multiple-access interference ( MAI).
对于DS-CDMA移动通信系统，信道的失真与多址干扰是限制系统性能的主要因素。 - It can conveniently overcome channel distortion including multi-path-fading to achieve very good performance by channel estimation and equalization.
QOTDM不存在峰值平均功率比太高和对载波频偏敏感的缺点，并且便于通过信道估计与均衡，克服包括多径衰落在内的信道失真的影响，达到良好的性能，具有很好的发展前景。 - The severe inter-symbol interference, caused by multi-path effects and channel distortion of sound propagation, degrades the reliability and decreases the rate of the propagation, is the chief obstacle of high speed underwater sound correspondence.
水声通信中广泛存在的多径衰落和信道失真导致的码间干扰大大降低了水下数据的可靠性和传输速率，是高速水声通信的主要障碍。 - The error pattern designed in this model overcomes the defect of uneven MB lost, and the quadratic relationship between packet loss-rate and channel distortion decreased the estimation errors of other packet loss-rate.
本文设计的模板克服了宏块丢失不均匀的缺点，丢包率与传输失真之间的二次关系也减少了其余丢包率下的传输失真估计误差。 - In this model, specific packet loss-rate channel distortion is calculated by a few specially-designed channel simulators which according to the error pattern to simulate video transmission at encoder firstly.
模型在编码端采用多个仿真信道模拟视频传输，根据特别设计的丢包模板，计算出某个特定丢包率下的信道误差，再用信道误差来计算传输失真。 - The inter-speaker variation, channel distortion and background noise result in the mismatch between the training condition and the testing condition. The mismatch degrades significantly the performance of the speaker-independent continuous speech recognition system.
说话人差异，信道失真和背景噪声导致训练环境和测试环境不匹配，严重影响了非特定人连续语音识别系统的性能。 - The advantage of this algorithm lies in the secondary to compensate for channel distortion and improve the balanced performance of the underwater acoustic channel.
该算法的优点在于二次补偿信道畸变，提高水声信道的均衡性能。 - There exists multipath effect in the wireless communication systems, which causes channel distortion and intersymbol interference.
无线通信中的多径效应会引起信道失真导致码间干扰（ISI）。 - When the high rate data is transmitted through bandlimited channels in mobile communications, the intersymbol interference ( ISI) caused by channel distortion and multipath propagation will bring decoding error. It needs to adopt appropriate techniques to remove or reduce this kind of interference.
当在带限信道上传输高速数据时，会因为信道畸变和多径效应产生的码间干扰而产生误码，这就需要采用适当的技术来消除或减少这种干扰。 - Meanwhile, combining with OFDM technology, it can effectively enhance the efficiency of frequency spectrum and restrain channel distortion.
同时，与正交频分复用（OFDM）技术相结合，可有效提高频谱利用率和抑制信道损伤。