查询词典 orthogonal

Despreading the array receiving signal with the spread spectrum sequence being orthogonal to user's, and the coefficients of the channel FIR filter are then adjusted by CM algorithm adaptively to compensate the errors.

在天线阵列附近，发射扩谱序列正交于用户信号的同频辅助信号，用辅助信号对阵列接收信号解扩，采用恒模算法自适应的调节阵列通道滤波器参数，达到补偿阵列误差的目的。

In chapter five, the base band signal process of CDMA base station simulator system is introduced, including channel coding and decoding, interleave and disinterleave, PN sequence generator, orthogonal spread spectrum and quadrature Spreading, scrambling code, power control, digital forming filter, the capture and track of PN code, dispreading and demodulation, etc. Some FPGA design graphic and waveform simulation of base band transmitter module is given and realization algorithm of base band receiver is discussed in detail.

第五章介绍了CDMA基站仿真系统的基带信号处理过程，包括信道编译码、交织与去交织、PN码发生器、正交扩频与四相扩频、扰码、功率控制、数字成形滤波器、PN码的捕获与跟踪、解扩与解调等，并给出了基带发射机模块的部分FPGA设计原理图和波形仿真，详细论述了基带接收机模块的实现算法。

No additional data for frequency tracking are need, but higher estimation accuracy and low computational complexity can be obtained. Finally, a kind of optimizing joint algorithm for symbol timing, frequency synchronization and channel estimation is proposed. The false alarm probability and miss detect probability of the symbol timing are derived. We proved that the time－frequency offset domain random sequence sliding in the frequency offset direction is orthogonal with the original random sequence, and proposed a new integer frequency offset estimation algorithm. The coarse estimation methods for fractional frequency offset both in AWGN and multipath channels are proposed too.

最后，提出了一种优化的符号同步、频偏估计和信道估计的联合算法，推导了符号同步方法的虚警概率和漏检概率，给出了随机序列在时间－频率偏移域沿频率偏移方向滑动后与原序列近似正交的证明，提出了一种新的在时间－频率偏移域沿频率偏移方向进行滑动相关估计整数频偏的方法，提出了在AWGN信道和多径信道下进行小数频偏粗估计的方法，给出了小数频偏细估计的ML估计结果和利用频域PN序列取值特性的简洁的信道估计结果。

The result of orthogonal experiment showed that the sequence of the factors affecting extraction ratio of the LPC was flocculation method, solid-liquid ratio and the amount of adding salt. The optimal combination condition was solid-liquid ratio 1:7, salt concentration 0.3% and ethanol precipitation method.

对固液比、盐浓度、凝絮方法3因素3水平正交试验结果表明，影响聚合草叶蛋白提取率的因素依次为凝絮方法＞固液比＞加盐量，最佳条件组合为固液比1：7、盐浓度0.3%、乙醇法沉淀。

By range analysis of the orthogonal designing scheme, the sequence affecting pump head and efficiency of the four main factors were obtained, the number of short-blade, the deflection angle, the bias angle in peripheral direction, the radial inlet position and the number of short-blade, the radial inlet position, the bias angle in peripheral direction, and the deflection angle, meanwhile the best design scheme of short-blade was given.

通过对正交设计方案结果的极差分析，得出各因素水平对扬程和效率影响的主次顺序分别为短叶片数、偏转角、周向偏置度、径向进口的相对位置和短叶片数、径向进口的相对位置、周向偏置度、偏转角，从而得到超低比转速高速离心泵复合式叶轮短叶片的最佳设计方案。

Methods: 17 healthy volunteers underwent axial conventional DWI and DWI with fluid attenuated inversion recovery by use of the single shot echo planar diffusion weighted MR sequence in three orthogonal directions on 3.0T MR imager.

17名健康志愿者在3.0T MRI上行常规轴位DWI和FLAIR-DWI扫描，分别测量两侧半卵圆区、扣带回、丘脑及胼胝体膝部和压部的ADC值及DWI信号强度，同时测量基底节层面的DWI信号强度作为噪声，计算以上5个部位DWI图像的信噪比。

Turbidity of outflow reached the lowest level when ration of PAM towards sludge and water together equaled 1∶1. According to the orthogonal experiments, the sequence for four main factors of this technology influencing turbidity could be expressed as: poly-ferric chloride dosage, rotational speed of mechanical blender, activated sludge dosage, and PAM dosage.

同时，采用正交实验考察了不同因素对高效絮凝沉淀工艺的处理效果的影响程度，分析得出影响试验出水浑浊度的显著性顺序依次为：聚合氯化铁投加量＞机械絮凝搅拌转速＞活性污泥投加量＞PAM投加量。

The optimum synthesizing conditions of phosphonoarboxylic acid cotelomer are determined by a series of orthogonal experiments.

通过正交实验确定了膦酰基羧酸共调聚物的最佳合成工艺条件。

Kernel, spline, and orthogonal series methods.

核，样条，和正交序列方法。

Orthogonal test ; polycarboxylic series of water reducer ; synthesizing ; high performance

正交试验；聚羧酸系减水剂；合成；高性能

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。