carrier synchronization是什么意思

网络释义

用法例句

A joint method of carrier synchronization and channel estimation in OFDM system;

OFDM系统中联合信道估计的载波同步算法的研究

Research on an improved BPSK carrier synchronization method;

一种改进的BPSK载波同步方法的研究

Research on Carrier Synchronization in OFDM System;

OFDM系统载波同步问题研究

Analysis of several carrier frequency synchronization algorithms for OFDM;

OFDM中的载波同步技术介绍

A scheme based on cyclic-shifted preamble sequences is proposed for carrier frequency synchronization in OFDM system.

提出一种基于循环移位前导序列的正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)系统载波同步方法,该方法根据离散傅里叶变换(Discrete Fourier Transform,DFT)的时移性质,构造循环移位前导序列,并设计了两个频偏估计器。

Therefore, high transmission performance of OFDM takes the time-frequency synchronization as a premise.

其次,研究了数据辅助型的载波同步算法。

The mixed structural algorithms of carrier frequency synchronization for OFDM in high speed mobile environment;

高速移动环境下OFDM系统载波同步的混合结构算法

Based on summarizing every typical method of the carrier frequency synchronization,in this paper a new frequency offset estimation algorithm on fast fading channels is presented.

在对OFDM系统各类典型的数据辅助的载波同步方法总结的基础上,提出了一种适于快衰落信道环境的载波频偏估计方法,算法分析及仿真结果表明该方法可以有效消除快衰落环境对载波频偏引起的误差,并可在多种移动环境下使用,此外,由于提出的算法相对较低的运算,可以适用于对功耗或体积有特殊要求的小型移动终端。

Based on analyzing OFDM signal model of carrier frequency offset, an efficient algorithm of carrier frequency synchronization using one OFDM preamble symbol is presented.

在分析OFDM系统载波频偏信号模型的基础上,提出了基于单OFDM前导符号载波同步的高效算法。

Algorithms of timing recovery loop and carrier recovery loop employed are analyzed and simulated.

根据QPSK信号的特点,对载波同步算法进行了简化。

In the paper, direct band pass sampling was used to QPSK signal with 70 MHz IF, and complete demodulation with FPGA which has carrier recovery and timing synchronization algorithms, using reconfigurable device.

本文就是对 70MHz的中频QPSK信号进行直接带通采样,然后送入已写入载波同步算法和定时同步算法的FPGA中,从而完成对QPSK信号的全数字化解调,由于采用了可动态配置的FPGA来实现QPSK信号的解调,因此只需通过软件对其参数进行适当的设置,就可以完成对多种数据传输率、多种中频载波的QPSK信号的解调。

Time synchronization and carrier wave synchronization are cruxes of receiver.

时钟同步和载波同步是接收机的关键问题,传统模拟解调可靠性、稳定性差,调试复杂。

Then the performance of the system was compared with the other systems, and a kind of time synchronization and carrier wave synchronization method was introduced.

分析了其调制原理,和体制性能,与其他体制作了简单比较,并针对解调结合现有算法,提出了载波同步和定时同步的实现。

Multi-carrier synchronization loop of CMMB is comprised of two parts: carrier frequency offset estimation part and carrier frequency correction part.

本课题针对CMMB接收机的多载波同步的算法及其硬件实现做了深入的研究。

The Smart Jamming on Carrier Synchronization of HF parallel System

对短波并行体制载波同步的灵巧干扰

Design of Symbol Synchronization and Carrier Synchronization for CMMB System

CMMB接收机符号同步与载波同步算法设计

The Research of Carrier Synchronization Technology on All Digital Receiver for MPSK Signal;

MPSK全数字接收机载波同步技术的研究

Reaearch and Implement of the Coding and Carrier Synchronization Technique for MT-DS-CDMA Communication

MT-DS-CDMA编码与载波同步研究与实现

A Code-Aided Carrier Synchronization Algorithm Based on APPA

一种基于APPA的码辅助载波同步算法

Phase Error Analysis on EBPSK Carrier Synchronization

EBPSK载波同步中的相位误差分析

Carrier synchronization for high rate 8PSK signals and implementation

高速率8PSK信号的载波同步及实现

Research of carrier synchronization for low SNR and high dynamic signals

低信噪比高动态信号的载波同步研究

Carrier Synchronization Method Based on FFT and Kalman Filter

基于FFT和卡尔曼滤波器的载波同步方法的研究

Under the condition of carrier phase changing slowly, its performance is independent with carrier state, so symbol timing-recovery doesn't care the state of carrier synchronization, and can be realized before carrier synchronization.

因此定时同步可以独立于载波同步状态,有利于采用载波开环的方法实现时钟同步。

The effect of the carrier phase error on the demodulator is actually measured.

实测了载波同步误差对解调器性能的影响。

Research and Realization of Carrier Synchronization System in Satellite Navigation Receiver;

卫星导航接收机载波同步系统研究与实现

Frame-synchronization-aided carrier recovery algorithm for DSSS signal synchronization

帧同步辅助载波恢复在DSSS信号同步中的应用

Resaerches in the No-Load Slot-Ripple EMF of Salient-Pole Synchronous Generators

凸极同步发电机空载齿谐波电势分析

Analysis of Load Electromagnetism of Synchronous Generator by the Third Harmonic Excitation;

谐波励磁同步发电机负载电磁场分析

Research on Timing and Carrier Frequency Synchronization in OFDM Systems;

OFDM系统定时与载波频率同步研究

Design and FPGA Implement of Synchronization for Multi-Carrier DS-CDMA System

多载波DS-CDMA系统同步的设计与FPGA实现

Optimal Design of No-Load Airgap Flux Density of Permanent Magnet Synchronous Motor

永磁同步电机空载气隙磁密波形优化