QDPSK Quadrature Differential Phase C Shift Keying

用法例句

The principle and simulation of optical DQPSK modulation formats;

文章简单介绍了光差分正交相移键控(DQPSK)调制格式的调制和解调方式,对光DQPSK的预编码也进行了必要的说明。

This article theoretically derives the formulas for the principles of Carrier-Suppressed Return-to-Zero(CSRZ) and Differential Quadrature Phase Shift Keying(DQPSK) modem,presents the specific processes of their implementation and obtains by simulation their spectra after modulation and eye diagrams after demodulation.

文章从理论上推导出了载波抑制归零(CSRZ)码和差分正交相移键控(DQPSK)的调制解调原理公式,给出了实现的具体过程,以及仿真得到的调制后的频谱图和解调后的眼图。

And an all-optical regenerator design scheme for quadrature phase-shift keying(QPSK) and differential quadrature phase-shift keying(DQPSK) signals was investigated through numerical simulations.

对适用于正交相移键控和差分正交相移键控信号的全光再生器进行了仿真。

Differential Quadrature Phase Shift Keying(DQPSK) has higher spectral efficiency and greater robustness to chromatic and polarization mode dispersion than On-Off Keying(OOK).

40 Gbit/s波分复用系统已开始商用,在这种系统中,差分正交相移键控(DQPSK)比开关键控有更高的谱效率并且对色散和偏振模色散等有更高的鲁棒性。

A combination of differential phase-shift keying(DPSK) modulation format with dispersion managed soliton(DMS) transmission technique can depress the noise and nonlinear damage,and gives additional innovative advantage in densely spaced channels at high bit rates(40 Gbit/s and more) systems.

差分相移键控(DPSK)调制方式和色散管理孤子传输方式的结合能抵制噪声和非线性损伤,在高速(40 Gbit/s以上)多信道系统中具有突出的优点。

Analysis on transmission characteristics of differential phase shift keying signal of continuous pressure wave in drilling fluid channel

钻井液连续压力波差分相移键控信号的传输特性分析

Performance Research on 40 Gb/s DPSK Format Against Polarization-mode Dispersion

40Gb/s差分相移键控格式抗偏振模色散的性能研究

frequency differential phase shift keying demodulator

频率差分移相键控解调器

quarter phase-shift-keying modulator

二相移相键控调制器

Differential code shift keying for meter reading system based on low-voltage power line

差分码移键控在低压电力线抄表中的应用

phase comparison sinusoidal frequency shift keying

相位比较正弦移频键控

Analysis of the Transmission Performance of Octal Differential Phase-Amplitude-Shift Keying in High Speed Optical Fiber Communication System

高速光传输系统中八进制差分相位幅度键控性能分析

frequency shift keying

键控频移频移键控频移键位

Zero-error Low Frequency Three-phase Phase Shift Signal Generator

零误差低频程控三相相移信号发生器

Feature Extraction of MPSK Signal;

相移键控信号（MPSK）特征提取研究

Research on Carriere Stimation and Recovery of MPSK;

相移键控信号（MPSK）载波估计及恢复研究

Analysis and testing for phase-shifting error of a spatial phase-shifting interferometer

空间移相干涉仪的移相误差分析和测试

Design of PSK-based Low Speed Digital Communication System;

基于相移键控方式的低速数字通信系统的设计

Research on Trellis-Coded Chaotic Shift Keying Communications;

基于网格编码的混沌移相键控通信研究

Frequency-domain equalization for continuous phase frequency shift keying

连续相位频移键控信号的频域均衡算法

Modeling and designing based on FPGA for digital QPSK modulator and demodulator

基于FPGA的四相移键控调制解调器的建模与设计

An Improved Approach of Hybrid Differential Chaos Shift Keying with BER Performance Analysis

一种改进的混合差分混沌键控及性能分析

Analysis on System Character of General Differential Chaos Shift Keying

通用差分混沌键控通信系统及其性能分析