Proceedings ArticleDOI
Adaptive pre-compensation of LEDs for improved decoding of N-CSK in visible light communication
Alak Halder,Abhirup Das Barman +1 more
- pp 143-144
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TLDR
An adaptive pre-compensation using second order memory less polynomial to mitigate dynamic nonlinearity in LEDs to improve the performance of IEEE 802.15.7 standard N-level colcur shift keying (N-CSK) modulation for indoor visible-light optical wireless communication system.Abstract:
We propose an adaptive pre-compensation using second order memory less polynomial to mitigate dynamic nonlinearity in LEDs. The scheme will improve the performance of IEEE 802.15.7 standard N-level colcur shift keying (N-CSK) modulation for indoor visible-light optical wireless communication system. The N-CSK system is implemented and Voronoi segmentation is employed to decode N-CSK constellation. Decoding performance is simulated by Monte Carlo method and verified experimentally. Symbol error rate (SER) and error vector magnitude (EVM) at the receiver shows improved decoding performance of CSK through pre-distortion compensation of LEDs.read more
Citations
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Journal ArticleDOI
Enhanced Multiple Pulse Position Modulation Aided Reverse Polarity Optical OFDM System With Extended Dimming Control
TL;DR: It is shown that the proposed system with extended dimming control can achieve the highest effective spectral efficiency in most scenarios without substantially increasing the computational complexity, while still maintaining a power consumption level similar to those of the reference systems.
Journal ArticleDOI
Adaptive Extreme Learning Machine-Based Nonlinearity Mitigation For LED Communications
TL;DR: In this paper, an adaptive extreme learning machine (AELM) with a variable forgetting factor was proposed for adaptive learning in dynamic scenarios, and an AELM based (turbo) receiver was designed to handle the time-varying LED nonlinearity and memory effects jointly.
Patent
Lighting control method and apparatus for street lamps, and information obtaining method and apparatus based on optical communication
TL;DR: In this article, a lighting control method for the street lamp is characterized in that the method comprises the following steps: a street lamp obtains the traffic condition information of the road section where the street light is located from the traffic system server, the street lamps adjusts a preset first light characteristic value to a second light characteristicvalue according to the traffic conditions information, and then the second visible light communication data by the street lighting is transmitted by the road lamp according to both the first light and second light characteristics.
References
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Proceedings ArticleDOI
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Five disruptive technology directions for 5G
TL;DR: In this article, the authors describe five technologies that could lead to both architectural and component disruptive design changes: device-centric architectures, millimeter wave, massive MIMO, smarter devices, and native support for machine-to-machine communications.
Book
Wireless Communication
TL;DR: In this article, the authors discuss each block of wireless link in detail including coding, modulation and the advanced topics such as multiplexing, mobile communication, software radio, OFDM and MIMO.