A New Modified MPPM for High-Speed Wireless Optical Communication Systems

被引：9
|
作者：
Rouissat, Mehdi [1 ]
Borsali, Riad A. [1 ]
Chikh-Bled, Mohammad E. [1 ]
机构：
[1] Abou Bekr Belkaid Univ, Dept Elect, Lab Telecommun LTT, Tilimsen, Algeria
来源：
ETRI JOURNAL | 2013年 / 35卷 / 02期
关键词：
MPAPM; MPDAWM; MPPM; optical wireless communications; PWM; performance analysis;
D O I：
10.4218/etrij.13.0112.0196
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：
Previous work proposed combining multipulse pulse position modulation (MPPM) with pulse amplitude modulation to form multipulse amplitude and position modulation (MPAPM), which is a hybrid modulation that results in an improvement in bandwidth efficiency but a degradation in power efficiency. In this paper, to achieve greater power efficiency and a better data rate, we propose multipulse dual amplitude-width modulation, based on MPAPM and pulse width modulation. The proposed scheme shows a remarkable improvement in data rate and a 1.5-dB improvement in power efficiency over MPAPM, while sustaining the bandwidth efficiency. After introducing symbol structure, we present the theoretical expressions of spectral efficiency, the power requirements, and the normalized data rate, as well as the results of comparing the proposed modulation to MPPM and MPAPM.
引用
收藏
页码：188 / 192
页数：5
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