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

被引：20
作者：
Lin, Wan-Feng [1 ,2 ]
Chow, Chi-Wai [1 ,2 ]
Yeh, Chien-Hung [3 ]
机构：
[1] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30010, Taiwan
[2] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 30010, Taiwan
[3] Feng Chia Univ, Dept Photon, Taichung 40724, Taiwan
来源：
OPTICS COMMUNICATIONS | 2015年 / 338卷
关键词：
Visible light communication (VLC); Optical wireless communication (OWC); Orthogonal frequency division multiplexing (OFDM); Pilot channel estimation; PERFORMANCE; MODULATION; SCHEME; VLC;
D O I：
10.1016/j.optcom.2014.09.080
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Orthogonal frequency division multiplexing (OFDM) is a promising candidate for light emitting diode (LED)-based optical wireless communication (OWC); however, precise channel estimation is required for synchronization and equalization. In this work, we study and discover that the channel response of the white-lightLED-based OWC was smooth and stable. Hence we propose and demonstrate using a specific and adaptive arrangement of grid-type pilot scheme to estimate the LED OWC channel response. Experimental results show that our scheme can achieve better transmission performance and with some transmission capacity enhancement when compared with the method using training-symbol scheme (also called block-type pilot scheme). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：7 / 10
页数：4
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