共 5 条
PAM-DMT for Intensity-Modulated and Direct-Detection Optical Communication Systems
被引:188
作者:
Lee, Sian C. Jeffrey
[1
]
Randel, Sebastian
[2
]
Breyer, Florian
[3
]
Koonen, Antonius M. J.
[1
]
机构:
[1] Tech Univ Eindhoven, COBRA Res Inst, NL-5600 MB Eindhoven, Netherlands
[2] Siemens AG, Corp Technol, Informat & Commun, D-81739 Munich, Germany
[3] Tech Univ Munich, Lehrstuhl Nachrichtentech, D-80333 Munich, Germany
关键词:
Intensity modulation;
optical fiber communication;
orthogonal frequency-division multiplexing (OFDM);
OFDM;
D O I:
10.1109/LPT.2009.2032663
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:
A novel concept of pulse-amplitude-modulated discrete multitone modulation (PAM-DMT) is presented. It is shown that by pulse amplitude modulation of the subcarriers used, the resulting PAM-DMT time signal can be clipped asymmetrically to achieve a unipolar signal for transmission. The distortion resulting from this asymmetric clipping is orthogonal to the information signal itself, causing no additional penalty. Especially in intensity-modulated direct-detection optical channels, where a unipolar signal is to be transmitted, it is shown that this idea can improve system performance.
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页码:1749 / 1751
页数:3
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