On the Performance of Adaptive MIMO-OFDM Indoor Visible Light Communications

Hong, Yang; Wu, Tesi; Chen, Lian-Kuan

doi:10.1109/lpt.2016.2517192

Cited by 82 publications

(46 citation statements)

References 13 publications

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“…The aforementioned researches [18,19,20,24] only investigated the cases of fixed room sizes (5 m × 5 m × 3 m ) or fixed receiver positions, which result in the fixed distances between the transmitters and the receivers. However, in practice, the viewpoint that the transmission distance and angle largely determine the received power within a same indoor environment is strongly believed.…”

Section: Motivation and Contributionsmentioning

confidence: 99%

“…[19] proposed a new realistic indoor VLC channel model and applied it to multiple-input multiple-output (MIMO) communication system, which uses non-sequential ray tracing approach for the channel impulse responses. [20] illustrated an indoor VLC system with MIMO orthogonal frequency division multiplexing and receiver angular diversity module. [21] proposed centralized or decentralized transmitted power allocation algorithms for multiple input multiple output system considering multiple LEDs and photodetectors.…”

Section: Introductionmentioning

confidence: 99%

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On indoor visible light communication systems with spatially random receiver

Jia

Pan

Xie

et al. 2019

Optics Communications

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This paper studies the performance of an indoor optical wireless communication system with visible light communication (VLC) technology in a cuboid room with a spatially random receiver. Considering that the receiver is uniformly distributed on the floor of a 4a m × 4b m × H m (where a > 0, b > 0 and H > 0) cuboid room, 4 light emitting diode (LED) lamps are all located at the center of 2a m × 2b m rectangle, which is a quarter of the ceiling area. The receiver chooses the best channel link to receive the information from the LED lamps, which depends on the distance between the receiver and each lamp. By using stochastic geometry theory, we derive the exact/approximated analytical expressions for the outage probability and the ergodic capacity, respectively. Finally, our derived analytical results are verified by Monte Carlo simulations.

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Section: Motivation and Contributionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On indoor visible light communication systems with spatially random receiver

Jia

Pan

Xie

et al. 2019

Optics Communications

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“…The proposed scheme includes pre-and post-equalizations, micro LEDs, and advanced detection circuits and multi-level and multi-carrier modulations [1][2]. The latter includes single carrier frequency domain equalization, multi-band carrier-less amplitude and phase modulation, orthogonal frequency division multiplexing (OFDM), and OFDM/offset quadrature amplitude modulation [6][7][8][9]. As for modulation schemes used in VLC systems, the multi-level and multi-carrier modulation formats offers increased data rates both implementation but at the cost of increased complexity and cost as well as have a limited peak to average power ration to ensure operation within the linear region of the LED light source.…”

Section: Introductionmentioning

confidence: 99%

A 3 × 25 Mbps WDM-Ro-VLC System for Amateur Radio Applications

Chaudhary

Tang

Ghassemlooy

et al. 2019

2019 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC)

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Radio over visible light communications (Ro-VLC) can be a pioneering technology to provide ubiquitous radio services particularly in the radio network-permitted locations. In this work, three channels, each up-converted to a 50 MHz radio signal carrying 25 Mbps data, is transmitted over a 0.5 m visible light communications link by using the cost effective on-off key (OOK) modulation format. Three red, green and blue light emitting diodes are adopted for parallel transmission. We show simulation results, carried out using OptiSystem TM software, for the bit error rates for the proposed diffuse system for both nonreturn to zero and return to zero data formats.

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“…Besides, the multiple-input multiple-output (MIMO) technique has also been considered a promising approach to combine with OFDM to further increase the data rate without the additional need of frequency resources [6] . Usually there are multiple LEDs in a room to provide sufficient illumination; as a result, it is natural to implement the MIMO technique to realize parallel data transmission.…”

mentioning

confidence: 99%

“…In VLC, MIMO schemes have already been proved to be able to provide gains even under line-of-sight (LOS) conditions in contrast to the use of MIMO in the RF domain [7] . Spatial multiplexing, as one of the mainstream MIMO schemes, is able to transmit multiple data streams simultaneously on different LEDs with high data rates [6][7][8][9] . However, it only enjoys the multiplexing gain when the channel correlation is sufficiently low [7,10] .…”

mentioning

confidence: 99%

Adaptive multiple-input multiple-output mode switching for indoor visible light communication system with orthogonal frequency division multiplexing modulation

Guo

Huang

2017

Chin. Opt. Lett.

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We propose and experimentally demonstrate an adaptive multiple-input multiple-output (MIMO) mode switching scheme for an indoor visible light communication system combined with orthogonal frequency division multiplexing modulation. Only requiring 1 bit feedback from the receiver, the MIMO mode at the transmitter switches between spatial multiplexing and transmit diversity adapting to the channel correlation. In such a way, we can take advantage of both spatial multiplexing and transmit diversity, where the spatial multiplexing benefits for its multiplexing gain in the low channel correlation environment, and the transmit diversity is robust to high channel correlation. Experimental results validate the performance improvement over the pure spatial multiplexing or transmit diversity system. With the increasing of the channel correlation, the measured bit error rates of the proposed system are below the 7% pre-forward error correction (pre-FEC) limit of 3.8 × 10 −3 when the transmitted data rate is 50 Mb/s, and below the 20% pre-FEC threshold of 5.0 × 10 −2 when the transmitted data rate is raised up to 100 Mb/s. OCIS codes: 060.2605, 060.4080.

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On the Performance of Adaptive MIMO-OFDM Indoor Visible Light Communications

Cited by 82 publications

References 13 publications

On indoor visible light communication systems with spatially random receiver

On indoor visible light communication systems with spatially random receiver

A 3 × 25 Mbps WDM-Ro-VLC System for Amateur Radio Applications

Adaptive multiple-input multiple-output mode switching for indoor visible light communication system with orthogonal frequency division multiplexing modulation

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