Author
Al-Nahhal, Mohamed, Başar, E., Uysal, Murat
Publication Date
2021-01
Publication Place
-
IEEE
Subject
Adaptive modulation sizes, Decoding complexity, Generalized spatial modulation, Visible light communication
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0018-9545
Record ID
0e8e7052-a54a-4fee-86da-2824cd5bd31a
Library Location
Electrical & Electronics Engineering
Date
2021-01
Notes
TÜBİTAK
Sample Text
Adaptive spatial modulation (ASM) varies the modulation size across the transmit light-emitting diodes (LEDs) to improve the overall spectral efficiency of visible light communication (VLC) systems. This article proposes a novel ASM scheme, referred to as flexible generalized spatial modulation (FGSM), for VLC systems. The proposed FGSM system changes the modulation sizes over the LEDs and the number of active LEDs, to improve the average symbol error rate (SER) and spectral efficiency compared to ASM with a fixed overall number of LEDs. The modulation sizes are selected in order to optimize the average SER under a predefined spectral efficiency value. A closed-form expression of approximate SER is derived along with decoding complexity calculations for the proposed system. Numerical results are provided to confirm the superiority of the proposed system and to support theoretical derivations.
DOI
10.1109/TVT.2020.3047652
Cilt
70
