梳状的

a scheme of channel estimation using cyclic prefix based on the measurement of the low-voltage power line channel model is presented.after obtaining the frequency response of pilot sub-channel under the state of comb-type pilot,the data sub-channel response is obtained by interpolating the frequency response in frequency direction.in the pilot-free data period,the estimation of the channel is carried out by using cyclic prefix in order to improve the performance of system error rate.

摘 要：通过实际测量给出低压电力线的信道模型，在此基础之上提出了利用循环前缀对信道进行估计的方法，即在梳状导频模式时，使用导频获得导频子信道频率响应后，对其在频域方向进行插值得到数据子信道响应，在其后没有导频的序列的数据周期内，使用循环前缀对信道进行估计，从而起到改善系统误比特性能的目的。

This paper analyzes the frequency characteristics of comb filter and the principle of using comb filter as decimation filter.

文章分析了梳状滤波器的频率特性及其作为抽取滤波器的原理，特别指出了此种滤波器具有对Σ－△调制器成型的量化噪声的频谱形状保持不变的特性。

We researched the pre-processing algorithm of mapping signal: A comb filter was designed according to the property of the electromagnetic environment in operation room and the spectrum of EPM signal The Zero-Phase property has been achieved by using bi-direction IIR filter during off-line data processing.

研究了心外膜标测信号预处理算法：针对在手术室环境下电磁干扰强的特点和除极信号频谱分析的结果，设计了梳状数字滤波器，利用数据离线分析的特点进行双向IIR滤波，在减少计算量的同时实现了零相位特性。

After a description of the basic principle of vertical ultrasonic guided wave, this paper has made an analysis on the variation of the displacement offset of vertical mode variant with frequency; it has also presented an approach by which a pectinate symmetrical transducer be used to effectively detect pipeline flaws.

在纵向超声导波基本原理的基础上，分析了两种纵向模式位移分量随频率的变化而变化的情况，给出了一种梳状对称换能器对管道缺陷的有效检测。

Based on the analysis of the Doppler effect of the mobile channel, the performance of two MIMO-OFDM systems (STTC-OFDM and SFBC-OFDM) in the fast-moving environment is studied. Then, the algorithm for channel estimation based on the training sequence is extended into the fast-moving environment by introducing the space-frequency coding, the method of the equal-interval pectinate pilot-inserting, and the complete Maximum-Likelihood space-frequency decoding.

针对快速移动环境中存在的多普勒效应，研究了两种多输入多输出正交频分复用系统在快衰落信道中的误码性能，采用空频编码梳状等间隔导频插入方式，以及完全最大似然空频分组码解码算法，使用导频与接收信号进行信道参数估计，将一般多输入多输出正交频分复用系统中的基于训练序列的最小均方误差信道估计算法推广到了快衰落信道环境中。

Numerical calculation for sinusoidal signal, Gaussian periodic signal and square periodic signal is performed. The results show that zero-broadening slow and fast light is achieved using this optimized Brillouin comb gain for the three types of periodic signals, and the validity of the universal formula is proved.

通过对正弦信号、周期性高斯信号和周期性方波信号的数值计算，结果表明，利用该优化的梳状布里渊增益谱可实现这三种周期信号在零展宽下的快慢光，证实了所得普适公式的正确性。

A circumferential array of cleats, which each have the form of a comb, support and guide the terminal leads circumferentially, spaced from one another, to a certain location at the top from which the leads are taken and connected to terminals above.

布置成圆周形阵列的梳状线夹（35）在周向上支撑和引导端子引线（34），使端子引线的顶部彼此间隔开一定的距离，从顶部引出的引线连接到上面的端子上。

The electrodes consist of improved interdigital structures, and the polypyrrole is coated on the interdigital electrodes. The sensing principle of the sensor is based on the dielectric constant change when the sensing film absorbs or desorbs vapor.

湿度感测器的电极为改良式的梳状结构，并将聚吡咯滴覆於电极间，当成介电层，其感测原理为当聚吡咯吸附及释放水汽时，会造成材料内部介电系数的改变，使电容产生变化。

The shielded rectangular cross section slab line with cylindrical inner conductors is of great importance to microwave engineering and design.

在具有圆柱内导体的叉指滤波器和梳状滤波器工程设计中，对屏蔽矩形板线特性阻抗的计算至关重要，只有通过计算，才能确定滤波器中各导体的自电容和耦合电容值。

The report says more than 1,000 fist-sized comb jellies can be found in a cubic yard of Black Sea water during a bloom.

而在旺期的黑海，1立方米的水体中就有超过一千只拳头大小的梳状水母。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。