In the model communications system, the modulation process also is loaded the digital signal in the carrier scope value, the carrier frequency or on the carrier phase.
在典型的通信系统中，调制过程是数字信号加载在载波的幅度值、载波的频率或者载波的相位上。
The system uses time-frequency tracking loops to extract phase errors from data subcarriers with frequency interpolation to compensate for the estimated carrier frequency offsets.
该方法使用了时频同步跟踪环路，从数据子载波提取相位误差，并利用频域插值补偿多个用户的估计频偏。
Carrier frequency synchronization is one of the key techniques of OFDM system.
载波同步是正交频分复用系统的一项关键技术。
Carrier frequency offset is one of the key problems in OFDM system.
载波频率偏移是OFDM系统实现的关键问题之一。
A new symbol timing and carrier frequency synchronization scheme applicable to orthogonal frequency division multiplexing (OFDM) system was presented.
针对正交频分复用(OFDM)系统提出了一种新的符号定时和载波频率同步算法。
The offset of carrier frequency can cause interference between subchannels in a multicarrier system.
对于多载波系统，载波频率的偏移会导致子信道之间产生干扰。
In a digital communication system, usually there exist carrier frequency offset between the sender and the receiver.
在数字通信系统中，发送端和接收端的载波往往存在一定的频差。
Aiming at the uncertainty of weights selection in the weighting orthogonal frequency division multiplexing system, a performance analysis method for carrier blind synchronization is proposed.
针对载波加权正交频分复用系统中权值选择的不确定性，提出了一种载频盲同步的性能分析方法。
In wireless communication system, there is a large frequency bias between carrier frequency and local oscillating frequency. AFC is contributed to eliminate it.
在无线移动通信中，接收机的本地振荡频率和载波频率之间往往存在较大的频率偏差，AFC用于克服此频偏。
This paper describes a novel joint acquisition algorithm of timing and carrier frequency for burst orthogonal frequency division multiplexing (OFDM) transmission system.
提出了一种新的正交频分多路（OFDM）传输系统定时和载波频率捕获联合算法。
The simulation for QPSK shows that the algorithm can estimate the carrier phase and frequency offset accurately and reduce the system BER effectively.
结果表明，用该算法可以精确估计载波相位和频差，有效地降低系统的误码率。
This paper introduces the theory of Single Carrier Frequency-Domain Equalization (SC-FDE), and compares the SC-FDE system with Single Carrier Time-Domain Equalization (SC-TDE) system and OFDM system.
介绍了单载波频域均衡技术的原理，与单载波时域均衡以及多载波ofdm系统进行了比较。
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。
The advantages of this system are that the equipment used is simple, that the carrier frequency is stable and that no affects of phase-error accumulation exist.
该方法的特点是所用设备简单，载波频率稳定和无相位误差积累影响。
For high requirement of transmitting carrier in TV transmitter, frequency synthesizer as one of the most important parts in transmitting system is researched in this paper.
就电视发射机对发射载波的高要求，论文对电视发射系统中关键部件之一的频率合成器进行了研究。
A method and apparatus for performing uplink transmission in a multiple-input multiple-output (MIMO) single carrier frequency division multiple access (SC-FDMA) system are disclosed.
公开一种在多输入多输出(MIMO)单载波频分多址(SC -FDMA)系统中用于执行上行链路传输的方法和设备。
The automatic carrier frequency tracking scheme is accomplished by two steps in our system.
自动载波频率跟踪部分的设计分了两个主要阶段。
As a method of the adjustment of time offset, power information and carrier frequency offset in the uplink, ranging plays an important role in the system.
测距作为上行链路调整时间偏置、功率信息和载波频率的一种方法，对系统起了很大的作用。
We propose new carrier frequency acquisition and channel estimation algorithms based on the time-domain analysis of OFDM system.
本文根据OFDM系统特点，分析了OFDM系统的时域载波频率捕获和信道估计方法。
The invention relates to a method and a system for compensating a carrier frequency offset in an orthogonal frequency division multiplexing (OFDM) receiver.
本发明涉及在正交频分复用（OFDM）接收机中补偿载波频率偏移的方法和系统。
The frequency reuse factor and the capacity of cellular systems are derived by analyzing and calculating the carrier to interference power ratio in the cellular radio system.
通过对蜂窝系统的载干比的分析，计算了各种蜂窝系统的频率复用系数和系统容量。
This paper focuses on carrier frequency offset estimation (CFO) and multiuser interference elimination in uplink OFDMA system based on generalized carrier assignment schemes.
本文针对上行链路任意分配子载波重点研究了载波频偏估计和多用户间干扰消除的方法。
At a repetition rate nearly equal to the carrier frequency of the reticle system, the jamming source will disturb the target's signal received by the seeker, and make the seeker lose the target.
而重复频率近似等于调制盘系统调制波形载频的光脉冲会干扰导引头接收到的目标信号，使导引头失去目标。
But because of the sensitivity to the carrier frequency-offset, very small frequency offset will destroy the performance of the OFDM system, badly.
但是，OFDM对载波频偏非常敏感，很小的载波频偏都会严重影响OFDM系统性能。
The carrier phase shift technique based parallel back-to-back PWM converter is used on the direct-drive wind power system, with a switching frequency as low as 1 kHz.
直驱型风力发电系统需要全功率变流器，在现有器件功率水平以及开关频率等诸多因素制约下，变流器直接并联的方式具备结构简单、模块化设计、易扩展的优点。
This paper introduces the system of single carrier frequency domain equalization (SC-FDE) and the frequency-domain block least-mean-square (FBLMS) algorithm for SC-FDE.
介绍了单载波频域均衡(SC -FDE)系统以及SC - FDE所常用的频域块最小均方(FBLMS)算法。
OFDM system performance is more sensitive to frequency offset and timing error than single-carrier systems.
OFDM系统中频偏和定时误差的存在，对系统性能有很大的影响。
In the fourth chapter, it illuminates the theory of TV carrier frequency precision control in TV transmitter, the design scheme and system configuration are also introduced.
第四章阐明了电视发射机中电视载频精密偏置的原理，介绍了具体设计方案以及系统框图。
In this paper, a new carrier generation system-PLC frequency synthesizer is presented.
本文提出一种新型载频供给系统——频率合成器。
In this paper, a new carrier generation system-PLC frequency synthesizer is presented.
本文提出一种新型载频供给系统——频率合成器。
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