Multirate Optical CDMA Systems Combining Generalized Modified Prime Sequence Code and Bi-Orthogonal Code

被引：0
|
作者：
Ono, Kyohei [1 ,3 ]
Matsushima, Tomoko K. [2 ]
Yamasaki, Shoichiro [1 ]
Tanaka, Hirokazu [1 ]
机构：
[1] Hiroshima City Univ, Grad Sch Informat Sci, Hiroshima 7313194, Japan
[2] Yokohama Coll Commerce, Dept Management Informat, Yokohama, Kanagawa 2308577, Japan
[3] Japan Org Employment Elderly Persons Disabil & Job, Chiba 2618558, Japan
来源：
IEEE ACCESS | 2024年 / 12卷
基金：
日本学术振兴会;
关键词：
Codes; Adaptive optics; Multiaccess communication; Visible light communication; Optical transmitters; Optical receivers; Internet of Things; Bi-orthogonal code; generalized modified prime sequence code; multirate transmission; optical code division multiple access; visible light communication; DS-CDMA; SPREADING CODES; GENERATION; LINK;
D O I：
10.1109/ACCESS.2024.3385376
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Recently, visible light communications (VLCs) have attracted attention as a complement to wireless communications by radio frequency. In addition, the demand for Internet of Things (IoT) communications has increased in the last decade, and VLC-based IoT systems are being considered. Because IoT devices operate at various data rates, multirate transmission is required. Herein, we propose a scheme that supports multirate data transmission for synchronous optical code division multiple access systems. This scheme employs a generalized modified prime sequence code and multiple extended bi-orthogonal codes. The proposed scheme realizes multirate transmission with an arbitrary number of data rate levels by superimposing spreading codes of different codelengths. In addition, the proposed scheme eliminates not only interference between users with the same data rate, but also interference between users with different data rates. Furthermore, we investigated the bit error rate performance and energy efficiency of the proposed scheme, considering the effects of background light, dark current, and PIN photodiode noise including shot noise, and thermal noise.
引用
收藏
页码：56789 / 56798
页数：10
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