DCT-OFDM tabanlı görünür ışık haberleşmesi

Name: DCT-OFDM tabanlı görünür ışık haberleşmesi
Author: Narmanlıoglu, Ömer, Uysal, Murat

İsim	DCT-OFDM tabanlı görünür ışık haberleşmesi
Yazar	Narmanlıoglu, Ömer, Uysal, Murat
Basım Tarihi:	2016
Tür	Belge
Dil	Türkçe
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	978-1-5090-1679-2
Kayıt Numarası	f55ca467-e2e4-4b2b-9d44-00fbd11a1db6
Lokasyon	Electrical & Electronics Engineering
Tarih	2016
Notlar	Istanbul Kalkınma Ajansı
Örnek Metin	Visible light communication (VLC) is a short-range wireless transmission technique in which light emitting diodes (LEDs) are used as data transmitters. Because of non-coherent characteristics of LEDs, only intensity can be used in transmission, therefore, the signal driven to LEDs should be real valued and non-negative. The output of inverse discrete Fourier transform (IDFT) process in conventional orthogonal frequency division multiplexing (OFDM) is complex-valued. In VLC systems, to make the output of IDFT block real valued, Hermitian symmetry is applied at the input. This reduces spectral efficiency to half. In this paper, to prevent the decrease in spectral efficiency of VLC systems, discrete cosine transform (DCT)-based OFDM structure with real valued outputs is proposed. The error rate performance of the proposed system is compared with DFTbased OFDM system over indoor realistic VLC channel models.
DOI	10.1109/SIU.2016.7495792

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DCT-OFDM tabanlı görünür ışık haberleşmesi

Yazar Narmanlıoglu, Ömer, Uysal, Murat

Basım Tarihi 2016

Tür Belge

Dil Türkçe

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 978-1-5090-1679-2

Kayıt Numarası f55ca467-e2e4-4b2b-9d44-00fbd11a1db6

Lokasyon Electrical & Electronics Engineering

Tarih 2016

Notlar Istanbul Kalkınma Ajansı

Örnek Metin Visible light communication (VLC) is a short-range wireless transmission technique in which light emitting diodes (LEDs) are used as data transmitters. Because of non-coherent characteristics of LEDs, only intensity can be used in transmission, therefore, the signal driven to LEDs should be real valued and non-negative. The output of inverse discrete Fourier transform (IDFT) process in conventional orthogonal frequency division multiplexing (OFDM) is complex-valued. In VLC systems, to make the output of IDFT block real valued, Hermitian symmetry is applied at the input. This reduces spectral efficiency to half. In this paper, to prevent the decrease in spectral efficiency of VLC systems, discrete cosine transform (DCT)-based OFDM structure with real valued outputs is proposed. The error rate performance of the proposed system is compared with DFTbased OFDM system over indoor realistic VLC channel models.

DOI 10.1109/SIU.2016.7495792