The way of pure pilot-frequency is one that adopts dedicated-channel generator to simulate pure pilot signal.
纯导频方式是采用专门的信道发生器模拟出纯粹的导频信号。
As the plane crossed state lines neither pilot realized the jet no longer was on the correct radio frequency and that controllers were growing worried about their failure to stay in contact.
飞机随后飞越了州界，两位飞行员都没有意识到飞机已经不在准确的无线电频率上，而地面塔台也对无法与飞机保持联系感到越来越担忧。
It has the higher switching speed and frequency and can be used as the pilot valve for a larger flow rate valve, or as a direct control valve for small flow rate hydraulic loop.
该阀具有很高的切换速度和频率，可以用来作为大流量高速开关阀的先导控制阀，也可以在小流量回路中直接作为控制阀使用。
When processing digital base-band, the signal of pilot-frequency was taken out from normal carrier channel and it would be used for transmitting pseudo pilot-frequency.
在数字基带处理时，从正常载频信道中提取出导频信号，用于伪导频的发射。
In the frequency domain pilot channel estimation, this thesis studies the pilot subcarrier and data subcarrier channel estimation algorithms.
在基于频域导频的信道估计中，研究了导频子载波处的信道估计方法和数据子载波处的信道估计方法。
Based on characteristics of the proposed pilot, an improved frequency domain least squares channel estimation method is proposed.
根据该导频的特性，提出了一种改进的频域最小二乘信道估计算法。
Meanwhile the second pilot specifies the flight route, connection frequency etc.
同时，副驾驶负责确定航班路线、联络频率等事项。
Based on joint time and frequency offset estimation, a reliable signal detection scheme is obtained by modulated pilot symbols using an m-sequence.
方案利用时频联合估计来得到可靠的信号检测，并从导频符号估计时间和频率偏移。
In this paper, the pilot subcarriers on two consecutive OFDM symbols are utilized for joint frequency offset correction and channel estimation.
基于连续OFDM符号上的导频子载波，给出了联合频率偏移纠正和信道估计方法。
A multiple carrier frequency offsets (CFOs) estimation algorithm for multiple Input multiple Output Orthogonal frequency Division Multiplexing (MIMO-OFDM) systems based on pilot symbols was proposed.
提出了一种基于导频符号的多输入多输出正交频分复用(MIMO - OFDM)系统多频偏估计算法。
The model of the MIMO-OFDM system in doubly-selective channels is derived and a lower bound of mean squared error(MSE) of the channel estimator using frequency domain pilot is presented.
基于双衰信道的频域响应，提出了一类双衰信道下多天线正交频分复用（MIMO-OFDM）系统的最优化频域导频设计方案。
And by the reduction of pilot Numbers, frequency resource of the system is increased. In addition, with singular value decomposition, the algorithm computational complexity can be simplified.
通过简化导频数提高了系统频带利用率，利用奇异值分解进一步简化了算法复杂度。
The MIMO-OFDM channel estimation method is researched based on the system design, and a space-frequency domain optimal pilot-tones design algorithm is presented.
从系统设计角度研究了MIMO-OFDM系统的信道估计方法，提出一种基于空频域的最优导频设计算法。
It compares the pilot distance protection with power line carrier (PLC) in the single or double frequency and the differential protection with optical fiber in the loop or chain connection.
比较单频率与双频率载波通道的纵联距离保护和环状与链状连接光纤通道的差动保护方案。
Various existing synchronization algorithm to estimate symbol timing offset and carrier frequency offset can be classified into blind and pilot-aided methods and algorithm based on cyclic prefix.
目前，估计载波频率偏差和符号定时偏差的算法主要有数据辅助的方法和非数据辅助的方法以及基于循环前缀的算法。
Apply high voltage pilot arc and high frequency stable arc with constant current properties, prevent influence from unstable voltage of power grid.
采用高压维弧和弱高频稳弧，同时具有恒流特性，不受电网电压波动的影响。
The two cases of pilot modulated data and random modulated data were theoretically analyzed, and the calculating method was also presented when the frequency offset existed.
分析了在相同数据和随机数据扩频调制条件下接收信号信噪比估计的计算方法，并对于有频差情况下的计算方法进行了说明。
This algorithm combines the block Pilot-aided LS channel estimation algorithm with a phase tracking algorithm, which can compensate the phase rotation caused by the residual carrier frequency offset.
该算法在传统的基于块状导频的Ls信道估计算法的基础上，加入了相位跟踪算法，补偿了由残余频偏带来的相位旋转。
This algorithm combines the block Pilot-aided LS channel estimation algorithm with a phase tracking algorithm, which can compensate the phase rotation caused by the residual carrier frequency offset.
该算法在传统的基于块状导频的Ls信道估计算法的基础上，加入了相位跟踪算法，补偿了由残余频偏带来的相位旋转。
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