Adaptive Spatial Modulation for Indoor Visible Light Communications

Visible light communication (VLC) exhibits rapid development tendency in recent years since it has many attractive features such as its low cost, electromagnetic interference-free and license-free spectrum. In this work, we consider the indoor VLC system with single mobile user. Due to mobility, the distance between the activated light-emitting diode (LED) and receive photodiode (PD) is varied. Under the assumption of random direction (RD) mobility model, we derive the probability density function (PDF) and the cumulative distribution function (CDF) of received electrical signal-to-noise ratio (SNR) for the mobile user. The adaptive spatial modulation (ASM) scheme with two adaptive mechanisms is developed where the modulation size can be dynamically changed based on the derived CDF and pre-specified switching threshold. Simulation results demonstrate that the proposed scheme can balance the trade-off in terms of spectral efficiency and link robustness.

[1]  Zabih Ghassemlooy,et al.  Channel Characteristics of Visible Light Communications Within Dynamic Indoor Environment , 2015, Journal of Lightwave Technology.

[2]  Joseph M. Kahn,et al.  Wireless Infrared Communications , 1994 .

[3]  Yue Xiao,et al.  Adaptive Spatial Modulation for Wireless MIMO Transmission Systems , 2011, IEEE Communications Letters.

[4]  Jean-Paul M. G. Linnartz,et al.  An illumination perspective on visible light communications , 2014, IEEE Communications Magazine.

[5]  Huaping Liu,et al.  Adaptive Modulation Schemes for Visible Light Communications , 2015, Journal of Lightwave Technology.

[6]  Marco Zuniga,et al.  SmartVLC: Co-Designing Smart Lighting and Communication for Visible Light Networks , 2020, IEEE Transactions on Mobile Computing.

[7]  Jim Esch.  Spatial Modulation for Generalized MIMO: Challenges, Opportunities, and Implementation , 2014, Proc. IEEE.

[8]  Ali Ghrayeb,et al.  Adaptive Spatial Modulation for Spectrum Sharing Systems With Limited Feedback , 2015, IEEE Transactions on Communications.

[9]  Robert J. Baxley,et al.  Joint Optimization of Precoder and Equalizer in MIMO VLC Systems , 2015, IEEE Journal on Selected Areas in Communications.

[10]  Donald F. Towsley,et al.  Properties of random direction models , 2005, Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies..

[11]  D. Owen.  Handbook of Mathematical Functions with Formulas , 1965 .

[12]  Jeffrey B. Carruthers,et al.  Wireless infrared communications , 2003, Proc. IEEE.

[13]  Yi-Jun Zhu,et al.  Fast-adaptive color-collaborative constellation designs for multicolor multiple-input multiple-output visible light communications systems. , 2019, Applied optics.

[14]  Harald Haas,et al.  Spatial Modulation , 2008, IEEE Transactions on Vehicular Technology.

[15]  Hongwei Li,et al.  Secrecy performance analysis of MISO visible light communication systems with spatial modulation , 2018, Digit. Signal Process..

[16]  Ali Ghrayeb,et al.  Spatial modulation: optimal detection and performance analysis , 2008, IEEE Communications Letters.

[17]  Harald Haas,et al.  Performance Comparison of MIMO Techniques for Optical Wireless Communications in Indoor Environments , 2013, IEEE Transactions on Communications.

[18]  Volker Jungnickel,et al.  High-speed visible light communication systems , 2013, IEEE Communications Magazine.

[19]  Lei Li,et al.  Layered space shift keying modulation over MIMO channels , 2015, 2015 IEEE International Conference on Communications (ICC).

[20]  Murat Uysal,et al.  A Mobile Channel Model for VLC and Application to Adaptive System Design , 2017, IEEE Communications Letters.

[21]  J. L. Harrison,et al.  The Government Printing Office , 1968, American Journal of Pharmaceutical Education.

[22]  İsmail Güvenç,et al.  Impact of Random Receiver Orientation on Visible Light Communications Channel , 2019, IEEE Transactions on Communications.

[23]  Jianxin Dai,et al.  Adaptive Spatial Modulation for Visible Light Communications With an Arbitrary Number of Transmitters , 2018, IEEE Access.

[24]  Mohsen Kavehrad,et al.  Software defined adaptive MIMO visible light communications after an obstruction , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).