Generation of arbitrary quadrature signals using one dual-drive modulator

被引：71

作者：

Ho, KP ^{[1
]}

Cuei, HW

机构：

[1] Natl Taiwan Univ, Inst Commun Engn, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Dept Elect Engn, Taipei 106, Taiwan

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2005年 / 23卷 / 02期

关键词：

differential quadrature phase-shift keying (DQPSK); external modulator; quadrature amplitude modulation; spectral efficiency;

D O I：

10.1109/JLT.2004.838855

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Regardless of the number of constellation points, all quadrature-amplitude modulation (QAM) signals can be generated using a single dual-drive Mach-Zehnder modulator. When the general method is applied to quadrature-phase-shift-keying (QPSK) signals, three different QPSK transmitters are shown with drive signals having four, three, or two levels. The usage of only one dual-drive modulator greatly simplifies the design of QAM and QPSK transmitters.

引用

页码：764 / 770

页数：7

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