Generalized Time Slot Index Modulation for Optical Wireless Communications

被引：11

作者：

Purwita, Ardimas Andi ^{[1
]}

Yesilkaya, Anil ^{[1
]}

Safari, Majid ^{[1
]}

Haas, Harald ^{[1
]}

机构：

[1] Univ Edinburgh, Inst Digital Commun, Sch Engn, LiFi Res & Dev Ctr, Edinburgh EH9 3JL, Midlothian, Scotland

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2020年 / 68卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

Indexes; Modulation; Wireless communication; Adaptive optics; Ultrafast optics; Optical pulses; Light emitting diodes; PAM; frequency domain equalization; index modulation; optical wireless communication; ORIENTATION; EFFICIENCY; SPACE;

D O I：

10.1109/TCOMM.2020.2979845

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 modulation scheme for an indoor optical wireless communication (OWC) system referred to as generalized time slot index modulation (GTIM) is proposed for single-carrier frequency domain equalization (SC-FDE) systems. This scheme is further referred to as SC-GTIM. In SC-GTIM, information bits are flexibly encoded onto both the amplitudes and positions of pulses. A set partitioning algorithm is proposed to construct a codebook for the SC-GTIM system. In this paper, SC-GTIM will be compared with the conventional pulse amplitude modulation-based SC-FDE (SC-PAM) and time slot index modulation-based SC-FDE (SC-TIM). By considering a multipath optical wireless channel and the limited dynamic range of a light emitting diode (LED), a considerable bit error ratio (BER) gain can be achieved by SC-GTIM. It is concluded that SC-GTIM is a promising technique for low to medium spectral efficiency transmission and uplink schemes.

引用

页码：3706 / 3719

页数：14

共 41 条

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