标题:A Novel Optical Index Modulation Aided DCO-OFDM Scheme for VLC Systems
作者:Li, Haodong; Sun, Jian; Zhang, Wensheng; Wang, Cheng-Xiang
通讯作者:Zhang, Wensheng;Zhang, WS
作者机构:[Li, Haodong; Sun, Jian; Zhang, Wensheng] Shandong Univ, Sch Engn, Sch Informat Sci & Engn, Inst Sensors Signals & Syst, Jinan 250100, Shandong, Peopl 更多
会议名称:10th European-Alliance-for-Innovation (EAI) International Wireless Internet Conference (WiCON)
会议日期:DEC 16-17, 2017
来源:WIRELESS INTERNET (WICON 2017)
出版年:2018
卷:230
页码:328-337
DOI:10.1007/978-3-319-90802-1_29
关键词:Visible light communication; Optical index modulation; DC-biased optical; OFDM; PAM
摘要:In this paper, a novel optical index modulation (OIM) aided direct-current (DC) biased optical OFDM (OIM-DCO-OFDM) scheme for visible light communication (VLC) systems is proposed. Different with traditional index modulation schemes, the proposed OIM-DCO-OFDM scheme uses index bits to determine which subcarrier transmit original signals and which subcarrier transmit conjugate signals. The constellation of traditional phase-shift keying (PSK) and quadrature amplitude modulation (QAM) is symmetrical about the real axis. It means that we cannot distinguish the original signals and conjugate signals. In order to recover index bits at the receiver, we propose a unipolar pulse amplitude modulation (PAM) scheme for the modulation of constellation bits, and design a zero-forcing (ZF) based detector. Compared with dual-mode index modulation aided DCO-OFDM (DM-DCO-OFDM) scheme, the proposed scheme has 1 dB and 2 dB performance gain at the bit error rate (BER) level of 10(-4) when the spectral efficiency is 1.21 bits/s/Hz and 2.18 bits/s/Hz, respectively. The proposed OIM-DCO-OFDM scheme can achieve 80% spectral efficiency improvement than the DM-DCO-OFDM scheme at the modulation order of M = 4.
收录类别:CPCI-S;EI;SCOPUS
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048049097&doi=10.1007%2f978-3-319-90802-1_29&partnerID=40&md5=616a61e5d6515e121bb8b245127b71d0
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