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snr gain
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  信噪比增益
     The character of high speed light pulse distortion and the fluency of the amplified spontaneous emission on the SNR gain under high power signal and pumper are analyzed.
     同时进一步分析了在大信号、高泵浦功率条件下高速光脉冲信号放大过程中的各种畸变特性以及放大的自发辐射对系统信噪比增益的影响。
短句来源
     Compared with Barker codes,the longer optimal binary sequences provided higher SNR gain,while similar range sidelobe level was remained.
     与Barker码相比,使用增加长度的最优序列进行编码激励可以获得更高的信噪比增益,同时保持与Barker码相近的距离旁瓣水平。
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     Simulation results show that more than 0.2dB SNR gain can be achieved under AWGN channel and with BER of 10~ -3 ,without extra consumption in power,bandwidth efficiency and complexity.
     仿真结果表明,新的映射方案在AWGN信道下,误码率为10-3时,可获得大于0.2dB的信噪比增益,而这一增益的获得并没有牺牲频谱效率和增加系统的复杂性。
短句来源
     The simulation results show that with QPSK,the combination of STBC and OFDM modulation provides the date-rate of 1.73Mbit/s under the bandwidth of 1MHz. Compared to the OFDM system,the proposed system may obtain up to 3dB SNR gain with BER of under Raleigh channel.
     结果表明,采用QPSK调制方式,双天线发射,单天线接收STBC与OFDM调制相结合,可以在1MH z带宽下得到1.73M b it/s的码速率,在瑞利信道下,该系统相对于无编码的OFDM系统,在误码率为1-0 3时,可获得3dB的信噪比增益
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     We analysed the reason and proposed two new decode combination scheme to eliminated the error floor and the performance of STBC on time-selective fading channel is improved. And also compared the two scheme’s complication and SNR gain.
     实际的信道是时变的,分析了空时块码在时间选择性衰落信道中产生误差地板效应的主要原因是存在码间干扰(ISI),在此基础上提出了两种能消除误差地板效应的译码合并方案,并对这两种方案的复杂度和信噪比增益进行了比较。
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  “snr gain”译为未确定词的双语例句
     Simulation results showed that the adaptive OFDM scheme exhibited more than 7.5 dB SNR gain for a target BER of 10~-4 relative to non-adaptive Turbo coded modulation for the same throughput.
     仿真表明,在目标BER为10-4下,此自适应OFDM方法与相同吞吐下的固定Turbo编码调制相比,有7.5dB以上的信噪比(SNR)增益。
短句来源
     Monte Carlo simulations show that the 4dB relative SNR gain is gained for the 2×2 MIMO OFDM systems without adaptation at the average BER of 10-5.
     蒙特卡罗仿真表明在10-5的误码率条件下在2×2MIMOOFDM系统中该算法相对于不采用自适应技术有大约4dB的相对增益。
短句来源
     Analysis and simulations show the large SNR gain achieved by using LOD non-linear function in RAKE correlator in low and moderate SNR situations.
     理论分析和模拟结果表明,本文提出的非线性RAKE接收机在较低信噪比下的性能明显优于线性RAKE接收机。
短句来源
     Based on the limitation of classical processing method in case of nonstational signal a practical noise removal algorithm is presented by using of the defference of WT modulus masima evolution behaviors between singular signal and random noise in multiscale space The simulation results show this method is effective in processing a class of nonstational signals with a useful SNR gain while having a good resolution in irregulraity information
     本文基于传统信号处理方法对非平稳信号的局限性,利用子波变换下奇异信号和随机噪声在多尺度空间中不同的模极大值传播特性设计了一种实用的子波消噪方法,对不同信号的仿真结果表明该方法既能提取一定的信噪比改善增益,同时又能保持对突变信息的良好分辨率,适合于一类非平稳信号进行时变处理.
短句来源
     A nonlinear single neuron is demonstrated to exhibit stochastic resonance by theoretical analysis and numerical simulations. This single neuron is used for noisy periodic signal transmission, and significant performance of raising input output SNR gain can be achieved.
     利用理论分析和数值仿真的方法证明了一种简单的非线性神经元存在随机共振现象 ,并将该神经元用于含噪声方波脉冲信号的传输 ,结果表明该方法可以有效提高信号传输系统的输入输出比增益 ,从而大大地抑制了信号中的噪声 .
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  相似匹配句对
     Research of gain and SNR of EBCCD
     EBCCD的增益及信噪比研究
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     LOSS AND GAIN
     得与失
短句来源
     Signal similarity was assured, and simultaneously the gain of SNR washighly improved after filter.
     应用Daubechies小波对信号滤波,在保证信号相似性的前提下,最大限度的提高了信噪比增益。
短句来源
     The Gain and Loss of Nanchizi
     南池子的得与失
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     The neurons and gliocytes of the SNr were counted.
     SNr神经细胞和胶质细胞数的变化。
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  snr gain
Verified by thesimulation results, the combined system achieves an averagetransmission rate less than 8 kb/s as well as an average 2 dBsignal-to-noise ratio (SNR) gain over the conventional equal errorprotection system.
      
When OFDM-FDMA with adaptive subcarrierallocation is applied, the SNR gain amounts to 12.5 dB(BER of 10-2).
      
It is shown that SWAD offers the advantage of a significant reduction in computational complexity at the cost of a slight reduction in SNR gain.
      
The HTS coil was a five-turn transmission-line resonator operated at 77 K, affording a signal-to-noise ratio (SNR) gain of about ninefold as compared to a similar, room-temperature copper coil.
      
When the coil was form-fitted to the phantom surface, a maximum SNR gain of 2 was achieved with respect to identical but plane RF coil.
      
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The ADPCM is a better method to compress the transmission code-rate of digital speech signals. It can notice both the transmitted quality and the complexity of equipment. In this paper,,several adaptive techniques for the ADPCM system,their principles,the basic algorithms and the designs will be discussed. A few algorithms are simulated on a digital computer. As far as certain specific speech frames are concerned, the adaptive quantizer with forward (AQF) transmission of step size has about segmental SNR...

The ADPCM is a better method to compress the transmission code-rate of digital speech signals. It can notice both the transmitted quality and the complexity of equipment. In this paper,,several adaptive techniques for the ADPCM system,their principles,the basic algorithms and the designs will be discussed. A few algorithms are simulated on a digital computer. As far as certain specific speech frames are concerned, the adaptive quantizer with forward (AQF) transmission of step size has about segmental SNR gains of 3 to 6dB compared to the fixed quantizer.

本文介绍了几种用于ADPCM编码系统的自适应技术及其原理、算法和设计,并通过微机模拟作了比较。就某些特定的语音帧而言,前馈自适应量化器与固定量化器相比较,大约可得到 3~6dB的分段(帧)信噪比增益。对于自适应预测器,若采用基于MMSE准则的自相关法确定最佳预测系数(包括反向自适应),系数是稳定的。但如果用梯度法确定最佳预测系数,则需要仔细地选择公式中的一些参数,否则,对某些特定的语音帧,可能使系统不稳定。

A Non-linear RAKE Correlator is derived from the locally optimum criterion for suppression of strong industrial impulsive interference and providing maximum ratio combining simultaneously. Its asymptotical performance is analyzed,and is simulated on computer under different situations. Also channel coefficients estimation using linear predictor is proposed and simulated. Analysis and simulations show the large SNR gain achieved by using LOD non-linear function in RAKE correlator in low and moderate SNR...

A Non-linear RAKE Correlator is derived from the locally optimum criterion for suppression of strong industrial impulsive interference and providing maximum ratio combining simultaneously. Its asymptotical performance is analyzed,and is simulated on computer under different situations. Also channel coefficients estimation using linear predictor is proposed and simulated. Analysis and simulations show the large SNR gain achieved by using LOD non-linear function in RAKE correlator in low and moderate SNR situations.

针对多径衰落信道中出现强工业脉冲干扰时通信系统受到的严重影响,从信号枪测的局部最佳(L0)准则出发,导出了非线性RAKE接收机结构。分析比较了线性和非线性接收机的渐近性能,以及非线性函数对信道参数估计误差的影响。提出了采用线性预测器结构估计信道参数的方法和改进的自适应算法。理论分析和模拟结果表明,本文提出的非线性RAKE接收机在较低信噪比下的性能明显优于线性RAKE接收机。

Based on the tracking-before-detection strategy, a recursive indicating method for theweak moving target is proposed. The expression for SNR gains is derived and the effect ofvelocity mismatching on SNR gains is discussed.Simulation results reported show that,withthis method,the detecting ability on the weak moving target is improved and less memoryand amount of computing work are required.

基于先跟踪再检测策略,提出了一种递推的运动弱目标检测方法,导出了其信噪比增益的表达义,并分析了速度失配对信噪比增益的影响。实验证明能有效地提高对运动弱目标的检测能力,并且需要的存贮量、计算量较小。

 
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