A Channel Estimation scheme for HACO-OFDM system-based visible light communications

被引：0

作者：

Wang, Tao ^{[1
,2
]}

Hou, Yonghong ^{[1
]}

Zhang, Haoyuan ^{[1
]}

Chen, Shanji ^{[2
]}

机构：

[1] Tianjin Univ, Sch Elect & Informat Engn, 92 Weijin Rd, Tianjin 300072, Peoples R China

[2] Qinghai Nationalities Univ, Sch Phys & Elect Informat Engn, 3 Bayi Middle Rd, Xining 810007, Qinghai, Peoples R China

来源：

17TH INTERNATIONAL CONFERENCE ON OPTICAL COMMUNICATIONS AND NETWORKS (ICOCN2018) | 2019年 / 11048卷

关键词：

Visible light communications; HACO-OFDM; channel estimation; least square;

D O I：

10.1117/12.2522834

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：

For the first time, a channel estimation method for hybrid ACO-OFDM (HACO-OFDM) based visible light communications systems is proposed. The channel characteristics carried on the ACO-OFDM subcarriers are estimated by the least square (LS) method, and the channel response on the PAM-DMT subcarriers can be obtained by linear interpolation of which on the ACO-OFDM subcarriers. While considering the multipath channel in the paper, the simulation results show that the proposed scheme is able to estimate the channel effectively for HACO-OFDM system. After equalization based on the results of the channel estimation, the average BER on the ACO-OFDM branch will be lower than 10(-3) when SNR>18.2dB, the average BER on the pulse-amplitude-modulated discrete multitone (PAM-DMT) branch will be lower than 10(-3) when SNR> 19.4dB.

引用

页数：6

共 9 条

[1] Using specific and adaptive arrangement of grid-type pilot in channel estimation for white-lightLED-based OFDM visible light communication system [J].