Journal ArticleDOI
Comparison of Asymmetrically Clipped Optical OFDM and DC-Biased Optical OFDM in AWGN
TLDR
ACO-OFDM requires less optical power for a given data rate than DCO- OFDM for all but the largest constellations and is better suited to adaptive systems as the same structure is optimum for all constellation.Abstract:
We present theoretical and simulation results for the performance of asymmetrically-clipped optical OFDM (ACO-OFDM) and DC-biased optical OFDM (DCO-OFDM) in AWGN for intensity-modulated direct-detection systems. Constellations from 4 QAM to 1024 QAM are considered. For DCO-OFDM, the optimum bias depends on the constellation size which limits its performance in adaptive systems. ACO-OFDM requires less optical power for a given data rate than DCO-OFDM for all but the largest constellations and is better suited to adaptive systems as the same structure is optimum for all constellations.read more
Citations
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Journal ArticleDOI
OFDM for Optical Communications
TL;DR: In this paper, the authors give a tutorial overview of OFDM and highlight the aspects that are likely to be important in optical applications, and discuss the constraints imposed by single mode optical fiber, multimode optical fiber and optical wireless.
Journal ArticleDOI
LED Based Indoor Visible Light Communications: State of the Art
TL;DR: This paper provides a comprehensive survey on VLC with an emphasis on challenges faced in indoor applications over the period 1979-2014.
Journal ArticleDOI
Comparison of ACO-OFDM, DCO-OFDM and ADO-OFDM in IM/DD Systems
TL;DR: ADO-OFDM is shown to be more optically power efficient than conventional ACO-TODM and DCO- OFDM, for some bit rate/normalized bandwidths.
Journal ArticleDOI
Wireless Myths, Realities, and Futures: From 3G/4G to Optical and Quantum Wireless
TL;DR: In this paper, the authors evaluate both the operational 3G as well as the emerging fourth-generation (4G) wireless systems and demonstrate that there is a substantial difference between their theoretical and their practically attainable performance.
Book
Principles of LED Light Communications: Towards Networked Li-Fi
Svilen Dimitrov,Harald Haas +1 more
TL;DR: This book provides a comprehensive analysis of information rate-, spectral- and power-efficiencies for single and multi-carrier transmission schemes, and a novel analysis of non-linear signal distortion, enabling the use of off-the-shelf LED technology.
References
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Book
Wireless Infrared Communications
Joseph M. Kahn,John R. Barry +1 more
TL;DR: The use of infrared radiation as a medium for high-speed short-range wireless digital communication, and several modification formats, including on-off keying (OOK), pulse-position modulation (PPM), and subcarrier modulation, are discussed.
Journal ArticleDOI
Power efficient optical OFDM
Jean Armstrong,Arthur J. Lowery +1 more
TL;DR: A new technique for using orthogonal frequency division multiplexing (OFDM) in optical systems is presented, derived from a bipolar OFDM waveform by setting the negative values to zero.
Journal ArticleDOI
Multiple-subcarrier modulation for non-directed wireless infrared communication
J.B. Carruthers,Joseph M. Kahn +1 more
TL;DR: It is found that MSM schemes can allow operation at higher data rates than single-carrier modulation schemes without equalization and can be more bandwidth-efficient and also can provide a simple and flexible method for multiple access to the channel.
Journal ArticleDOI
Experimental Demonstrations of Electronic Dispersion Compensation for Long-Haul Transmission Using Direct-Detection Optical OFDM
TL;DR: In this article, experimental demonstrations using direct-detection and optical-orthogonal frequency division multiplexing (DD-OOFDM) for the compensation of chromatic dispersion in long-haul optical fiber links are presented.
Proceedings ArticleDOI
SPC07-4: Performance of Asymmetrically Clipped Optical OFDM in AWGN for an Intensity Modulated Direct Detection System
TL;DR: It is shown that ACO- OFDM with 4-QAVI subcarrier modulation has the same bandwidth efficiency but requires 2 dB less energy per bit than on-off keying, andACO-OFDM with larger constellation sizes gives higher bandwidth efficiencies and lower optical power than other modulation schemes.