Capacity Analysis of M-PAM Inverse Source Coding in Visible Light Communications

被引：53

作者：

Ahn, Kang-Il ^{[1
]}

Kwon, Jae Kyun ^{[1
,2
]}

机构：

[1] Yeungnam Univ, LED IT Fus Technol Res Ctr, Gyongsan 712749, South Korea

[2] Yeungnam Univ, Dept Elect Engn, Gyongsan 712749, South Korea

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2012年 / 30卷 / 10期

关键词：

Dimming capacity; dimming coding; inverse source coding (ISC); M-ary pulse amplitude modulation (M-PAM); visible light communication (VLC);

D O I：

10.1109/JLT.2012.2185780

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：

We previously proposed inverse source coding (ISC) to maximize the transmission rate in visible light communications with dimming capability using ON-OFF keying. First, this paper extends the proposed ISC approach to M-ary pulse amplitude modulation and obtains the optimal probability distributions. Then, dimming capacity is used to compare the existing analog dimming approach, the extended ISC approach, and the hybrid of these approaches. We conclude that ISC is the best approach, and threshold values for adaptive modulation are derived depending on signal quality and dimming target.

引用

页码：1399 / 1404

页数：6

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