Publication Type:

Conference Paper

Source:

2019 28th Wireless and Optical Communications Conference, WOCC 2019 - Proceedings, Institute of Electrical and Electronics Engineers Inc. (2019)

ISBN:

9781728106601

URL:

https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85070364701&doi=10.1109%2fWOCC.2019.8770618&partnerID=40&md5=0fcf00e567e06dca9d4d481ab4a5ad72

Keywords:

Bit error rate, Bit error rate (BER) performance, Block diagonalization, Light, MIMO systems, Modulation, Modulation symbols, Multi-user interference, Signal to noise ratio, Spatial modulations, Spatial multiplexing, Transmission techniques, Transmitters, Visible light communication, Visible light communications (VLC)

Abstract:

In this paper, we analyzed the generalized spatial modulation (generalized SM) transmission technique for multi user indoor visible light communication (VLC) system. In generalized SM, number of bits conveyed per transmitter includes modulation symbol bits and active transmitter indices bits. Block diagonalization (BD) precoding technique is used to avoid multi user interference (MUI) in the transmitter without interference between photodiodes of the same user resulting in the noise reduction. A comparison is performed between the generalized SM with conventional Multiple Input Multiple Output (MIMO), spatial multiplexing (SMP) MIMO and spatial modulation MIMO transmission technique for multi user VLC system with regard to bit error rate (BER) performance using simulation. Simulation results show that generalized SM MIMO technique offers better signal to noise ratio (SNR) than SM MIMO by 2 dB, SMP MIMO by 5 dB and conventional MIMO technique by 8.5 dB to achieve the same BER of 10-6. We also analyzed the influence of field of view (FOV) at an optical receiver on SNR performance with respect to single light emitting diode (LED) power. © 2019 IEEE.

Notes:

cited By 0; Conference of 28th Wireless and Optical Communications Conference, WOCC 2019 ; Conference Date: 9 May 2019 Through 10 May 2019; Conference Code:150045

Cite this Research Publication

K. M. Jha, Dr. Navin Kumar, and Lakshmi, Y. V. S., “Generalized spatial modulation for multi-user in visible light communication”, in 2019 28th Wireless and Optical Communications Conference, WOCC 2019 - Proceedings, 2019.