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Proceedings Paper

Generation of a 16-star/square quadrature amplitude modulation (QAM) signal in radio over fiber system
Author(s): Yanzhi Wu; Tong Ye; Liang Zhang
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Paper Abstract

Radio-over-fiber (RoF) system, which is a promising integration solution of wireless and optical systems, has been attracting increasing attention for its significance in providing broadband wireless access with increased capacity and mobility of the access network and reduced cost of the system. 16-Star and 16-Square QAM signals, carrying four information bits by a single symbol, are attractive modulation format in radio over fiber system because of high spectral efficiency and low symbol rate. In this paper, using a quad-parallel Mach-Zehnder modulator followed by a single-drive Mach-Zehnder modulator, we propose a scheme to generate a 16-Star/Square QAM radio frequency (RF)-signal in radio-over-fiber system. The RF carrier is obtained by quintupling the frequency of the employed local oscillator signal, thus our proposal is cost-effective.

Paper Details

Date Published: 1 December 2009
PDF: 6 pages
Proc. SPIE 7632, Optical Transmission Systems, Switching, and Subsystems VII, 76321T (1 December 2009); doi: 10.1117/12.852234
Show Author Affiliations
Yanzhi Wu, Shanghai Jiao Tong Univ. (China)
Tong Ye, Shanghai Jiao Tong Univ. (China)
Liang Zhang, Shanghai Jiao Tong Univ. (China)

Published in SPIE Proceedings Vol. 7632:
Optical Transmission Systems, Switching, and Subsystems VII
Dominique Chiaroni, Editor(s)

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