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
相关论文
共 22 条
[1]  
[Anonymous], 2013, IEEE PHOTON J, DOI DOI 10.1109/JPHOT.2013.2238618
[2]   Bidirectional 16-QAM OFDM in-building network over SMF and free-space VLC transport [J].
Chen, Chia-Yi ;
Wu, Po-Yi ;
Lu, Hai-Han ;
Lin, Ying-Pyng ;
Wen, Jian-Ying ;
Hu, Fu-Chih .
OPTICS LETTERS, 2013, 38 (13) :2345-2347
[3]  
Choi J., 2014, OPT QUANT ELECT
[4]   Background Optical Noises Circumvention in LED Optical Wireless Systems Using OFDM [J].
Chow, C. W. ;
Yeh, C. H. ;
Liu, Y. F. ;
Huang, P. Y. .
IEEE PHOTONICS JOURNAL, 2013, 5 (02)
[5]   Adaptive scheme for maintaining the performance of the in-home white-LED visible light wireless communications using OFDM [J].
Chow, C. W. ;
Yeh, C. H. ;
Liu, Y. F. ;
Huang, P. Y. ;
Liu, Y. .
OPTICS COMMUNICATIONS, 2013, 292 :49-52
[6]   Channel estimation techniques based on pilot arrangement in OFDM systems [J].
Coleri, S ;
Ergen, M ;
Puri, A ;
Bahai, A .
IEEE TRANSACTIONS ON BROADCASTING, 2002, 48 (03) :223-229
[7]   Performance of indoor optical femtocell by visible light communication [J].
Cui, Kaiyun ;
Quan, Jinguo ;
Xu, Zhengyuan .
OPTICS COMMUNICATIONS, 2013, 298 :59-66
[8]   Performance improvement of color space based VLC modulation schemes under color and intensity variation [J].
Das, Pankaz ;
Park, Youngil ;
Kim, Ki-Doo .
OPTICS COMMUNICATIONS, 2013, 303 :1-7
[9]   100-Mb/s NRZ Visible Light Communications Using a Postequalized White LED [J].
Le Minh, Hoa ;
O'Brien, Dominic ;
Faulkner, Grahame ;
Zeng, Lubin ;
Lee, Kyungwoo ;
Jung, Daekwang ;
Oh, Yunje ;
Won, Eun Tae .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2009, 21 (15) :1063-1065
[10]   Visible light wireless communications based on predistorted OFDM [J].
Lee, Daechun ;
Choi, Kyungmook ;
Kim, Ki-Doo ;
Park, Youngil .
OPTICS COMMUNICATIONS, 2012, 285 (07) :1767-1770
123