1) varitation from rated system frequency
额定频率偏差
2) timing and frequency offset
定时和频率偏差
1.
It can improve the weakness of the primary iterative ML algorithm in the estimation of timing and frequency offset in AWGN noise channel and establish accurate synchronization in the multi-path fading channel.
在考虑多径衰落信道的影响下,改进了基于循环前缀的最大似然(ML)同步迭代算法,弥补了原ML迭代算法只在高斯白噪声信道背景下才能得到准确的定时和频率偏差估计的不足,实现了多径衰落信道下的同步估计。
4) frequency offset
频率偏差
1.
Impact on system performance produced by timing and frequency offset in OFDM system;
定时和频率偏差对OFDM系统性能影响
2.
Theoretical analysis and simulation results show that this scheme has low complexity and good performance to complete the frequency offset and sampling clock frequency offset estimation.
本文结合中国移动多媒体广播(CMMB)信道帧结构、调制及其信道的特征,提出了适用于CMMB系统基带接收机的频率和采样时钟同步设计方案,通过理论分析和仿真结果表明该方案不仅具有较低的复杂度,而且能准确地完成频率偏差和采样时钟频偏的估计。
3.
To reduce the impact of carrier frequency offset in OFDM system,this thesis designs a new carrier frequency offset estimation scheme for OFDM system.
为了减小正交频分复用系统受频率偏差的影响,在OFDM系统中设计了一种新的载波频偏估计算法。
5) frequency deviation
频率偏差
1.
The basic concept of the deviation of voltage and frequency, the harm in power system which result from their deviation, the national criterions of voltage and frequency deviation in china and the ways to adjust the voltage and frequency in power system were introduced.
介绍了电力系统电压与频率偏差的基本概念及产生原因,阐述了电力系统电压与频率偏差所造成的影响、危害。
2.
The voltage deviation,voltage fluctuation,flicker,harmonics and frequency deviation are main aspects of power quality problems.
文章分析了风电场闪变和谐波产生的原理,根据IEC和其它相关标准计算了系统连续运行情况下新疆电网达坂城地区风电场的电压变动、电压偏差、闪变、谐波和传递至电网负荷节点后的闪变值,分析了风电场因故切除后的系统频率偏差,同时指出制定风电发展规划时需对电网传输功率、无功功率和电压控制方式、机组组合方式和系统稳定性等方面进行分析。
3.
My attention in this thesis is focused on frequency deviation, voltage fluctuation and wind power penetration.
本文主要研究如何评估大型风电场接入电力系统后频率偏差、电压波动和风电穿透功率的问题,还将对风电的频率特性进行研究。
6) time synchronization and frequency offset estimation
定时及频率偏差估计
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条