quadrature partial response keying (QPRK)

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。

CCK-OFDM is an optional standard of Wireless LAN criterion (IEEE802.

补码键控-正交频分复用(CCK-OFDM)技术是无线局域网标准IEEE802。

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。