Filtered-OFDM for Visible Light Communications

Yanyan Wang, Ying Wei, Wensheng Zhang, Cheng-Xiang Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In visible light communications (VLCs), adaptive Orthogonal Frequency Division Multiplexing (OFDM) systems can adjust the transmission parameters according to channel estimation results to improve the system performance. Filtered-OFDM (F-OFDM) is a new flexible and adaptive technology based on OFDM systems and can further improve the system performance. In F-OFDM scheme, the out-of-band emission of OFDM signal is greatly inhibited by using the filter and the guard interval of the two subbands is reduced to save the spectrum resources. In this paper, we creatively apply the F-OFDM technology to visible light OFDM systems and derive the specific signal expression. Simulation results show that as the number of quadrature amplitude modulation (QAM) increases, the bit error rate (BER) performance of the F-OFDM system gets worse. Compared with asymmetrically clipped optical OFDM (ACO-OFDM) and direct current biased OFDM (DCO-OFDM) in VLCs, F-OFDM has better BER performance in 4QAM, 16QAM, and 64QAM schemes.

Original languageEnglish
Title of host publication2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops)
PublisherIEEE
Pages227-231
Number of pages5
ISBN (Electronic)9781538670118
DOIs
Publication statusPublished - 28 Mar 2019
Event2018 IEEE/CIC International Conference on Communications in China - Beijing, China
Duration: 16 Aug 201818 Aug 2018

Publication series

NameIEEE/CIC International Conference on Communications in China
ISSN (Electronic)2474-9133

Conference

Conference2018 IEEE/CIC International Conference on Communications in China
Abbreviated titleICCC Workshops 2018
CountryChina
CityBeijing
Period16/08/1818/08/18

Fingerprint

Orthogonal frequency division multiplexing
Bit error rate
Visible light communication
Quadrature amplitude modulation
Channel estimation

Keywords

  • ACO-OFDM
  • DCO-OFDM
  • Filtered-OFDM
  • QAM
  • Visible Light Communication

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Wang, Y., Wei, Y., Zhang, W., & Wang, C-X. (2019). Filtered-OFDM for Visible Light Communications. In 2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops) (pp. 227-231). (IEEE/CIC International Conference on Communications in China). IEEE. https://doi.org/10.1109/ICCChinaW.2018.8674487
Wang, Yanyan ; Wei, Ying ; Zhang, Wensheng ; Wang, Cheng-Xiang. / Filtered-OFDM for Visible Light Communications. 2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops). IEEE, 2019. pp. 227-231 (IEEE/CIC International Conference on Communications in China).
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title = "Filtered-OFDM for Visible Light Communications",
abstract = "In visible light communications (VLCs), adaptive Orthogonal Frequency Division Multiplexing (OFDM) systems can adjust the transmission parameters according to channel estimation results to improve the system performance. Filtered-OFDM (F-OFDM) is a new flexible and adaptive technology based on OFDM systems and can further improve the system performance. In F-OFDM scheme, the out-of-band emission of OFDM signal is greatly inhibited by using the filter and the guard interval of the two subbands is reduced to save the spectrum resources. In this paper, we creatively apply the F-OFDM technology to visible light OFDM systems and derive the specific signal expression. Simulation results show that as the number of quadrature amplitude modulation (QAM) increases, the bit error rate (BER) performance of the F-OFDM system gets worse. Compared with asymmetrically clipped optical OFDM (ACO-OFDM) and direct current biased OFDM (DCO-OFDM) in VLCs, F-OFDM has better BER performance in 4QAM, 16QAM, and 64QAM schemes.",
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Wang, Y, Wei, Y, Zhang, W & Wang, C-X 2019, Filtered-OFDM for Visible Light Communications. in 2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops). IEEE/CIC International Conference on Communications in China, IEEE, pp. 227-231, 2018 IEEE/CIC International Conference on Communications in China, Beijing, China, 16/08/18. https://doi.org/10.1109/ICCChinaW.2018.8674487

Filtered-OFDM for Visible Light Communications. / Wang, Yanyan; Wei, Ying; Zhang, Wensheng; Wang, Cheng-Xiang.

2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops). IEEE, 2019. p. 227-231 (IEEE/CIC International Conference on Communications in China).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AU - Wei, Ying

AU - Zhang, Wensheng

AU - Wang, Cheng-Xiang

PY - 2019/3/28

Y1 - 2019/3/28

N2 - In visible light communications (VLCs), adaptive Orthogonal Frequency Division Multiplexing (OFDM) systems can adjust the transmission parameters according to channel estimation results to improve the system performance. Filtered-OFDM (F-OFDM) is a new flexible and adaptive technology based on OFDM systems and can further improve the system performance. In F-OFDM scheme, the out-of-band emission of OFDM signal is greatly inhibited by using the filter and the guard interval of the two subbands is reduced to save the spectrum resources. In this paper, we creatively apply the F-OFDM technology to visible light OFDM systems and derive the specific signal expression. Simulation results show that as the number of quadrature amplitude modulation (QAM) increases, the bit error rate (BER) performance of the F-OFDM system gets worse. Compared with asymmetrically clipped optical OFDM (ACO-OFDM) and direct current biased OFDM (DCO-OFDM) in VLCs, F-OFDM has better BER performance in 4QAM, 16QAM, and 64QAM schemes.

AB - In visible light communications (VLCs), adaptive Orthogonal Frequency Division Multiplexing (OFDM) systems can adjust the transmission parameters according to channel estimation results to improve the system performance. Filtered-OFDM (F-OFDM) is a new flexible and adaptive technology based on OFDM systems and can further improve the system performance. In F-OFDM scheme, the out-of-band emission of OFDM signal is greatly inhibited by using the filter and the guard interval of the two subbands is reduced to save the spectrum resources. In this paper, we creatively apply the F-OFDM technology to visible light OFDM systems and derive the specific signal expression. Simulation results show that as the number of quadrature amplitude modulation (QAM) increases, the bit error rate (BER) performance of the F-OFDM system gets worse. Compared with asymmetrically clipped optical OFDM (ACO-OFDM) and direct current biased OFDM (DCO-OFDM) in VLCs, F-OFDM has better BER performance in 4QAM, 16QAM, and 64QAM schemes.

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Wang Y, Wei Y, Zhang W, Wang C-X. Filtered-OFDM for Visible Light Communications. In 2018 IEEE/CIC International Conference on Communications in China (ICCC Workshops). IEEE. 2019. p. 227-231. (IEEE/CIC International Conference on Communications in China). https://doi.org/10.1109/ICCChinaW.2018.8674487