Huffman Coding Based Spatially Modulated Optical MIMO-OFDM

International Journal of Electronics and Communication Engineering

© 2018 by SSRG - IJECE Journal

Volume 5 Issue 10

Year of Publication : 2018

Authors : Shabas Shadiya M.K and Abdul Rahim V.C

10.14445/23488549/IJECE-V5I10P101

How to Cite?

Shabas Shadiya M.K and Abdul Rahim V.C, "Huffman Coding Based Spatially Modulated Optical MIMO-OFDM," SSRG International Journal of Electronics and Communication Engineering, vol. 5,  no. 10, pp. 1-5, 2018. Crossref, https://doi.org/10.14445/23488549/IJECE-V5I10P101

Abstract:

ptical wireless communication (OWC) is a promising new technology for the next generation of wireless communication systems. This paper proposes a generalized index modulation technique based on Huffman coding for multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) OWC systems. With Huffman coding based spatial modulation, the generalization of both conventional spatial modulation and transmit LED selection is possible. The real and imaginary components of the complex time domain OFDM signals are separated first, then the resulting bipolar signals are transmitted over visible light communication channel (VLC) by encoding sign information in LED indices. The proposed scheme achieves considerably better bit error ratio (BER) performance than the existing VLC-MIMO-OFDM. Compared with single- input single-output (SISO) optical OFDM, the spectral efficiency can be doubled by simply exploiting a MIMO configuration.

Keywords:

Optical wireless communication (OWC), Generalised LED index modulation (GLIM), Huffman coding.

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