Experimental Research on Adaptive 128/64QAM DFT-Spread IFFT/FFT Size Efficient OFDM With a High SE in VLLC System

Qinghui Chen; Jing He; Rui Deng; Ming Chen; Fangliu Zhang; Min Dai; Fengting Long; Lin Chen

doi:10.1109/JPHOT.2016.2639786

IEEE Photonics Journal (Jan 2017)

Experimental Research on Adaptive 128/64QAM DFT-Spread IFFT/FFT Size Efficient OFDM With a High SE in VLLC System

Qinghui Chen,
Jing He,
Rui Deng,
Ming Chen,
Fangliu Zhang,
Min Dai,
Fengting Long,
Lin Chen

Affiliations

Qinghui Chen: College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
Jing He: College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
Rui Deng: College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
Ming Chen: College of Physics and Information Science, Hunan Normal University, Changsha, China
Fangliu Zhang: College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
Min Dai: College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
Fengting Long: College of Computer Science and Electronic Engineering, Hunan University, Changsha, China
Lin Chen: College of Computer Science and Electronic Engineering, Hunan University, Changsha, China

DOI: https://doi.org/10.1109/JPHOT.2016.2639786
Journal volume & issue: Vol. 9, no. 1
pp. 1 – 8

Abstract

Read online

In this paper, an adaptive inverse fast Fourier transform and fast Fourier transform (IFFT/FFT) size efficient orthogonal frequency division multiplexing (OFDM) modulation scheme with 128/64-quadrature amplitude modulation (QAM) and discrete Fourier transmission-spread (DFT-spread) is proposed and experimentally demonstrated in a visible laser light communication (VLLC) system with a cost-effective 450-nm blue-light laser diode. The experimental results show that the 5.95 Gb/s adaptive IFFT/FFT size-efficient OFDM with the spectral efficiency of 4.76 b/s/Hz transmission over 5-m free-space can be successfully achieved.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

About the journal

Abstract

Keywords