Abstract
In this article, a new indoor multiuser (MU) multiple-input–multiple-output (MIMO) visible light communication (VLC) system is proposed, where the dynamic range of the light emitting diodes (LED-DR) and illumination requirements are taken into consideration. Exploiting the characteristics of LED-DR and the block diagonalization precoding (BDP) technique, we design a weight-adjusted BDP (WA-BDP) scheme that can exploit the LED-DR to offer a high performance in terms of bit error rate (BER). Moreover, utilizing the LED array equipped with a number of LEDs, a spatial dimming (SD) mechanism based on LED selection is employed to fulfill the uniform illumination requirement for typical indoor scenarios. Finally, we combine the WA-BDP technique and SD to form the proposed spatially-dimmed, weight-adjusted block diagonalization precoded (SD-WA-BDP) MU-MIMO-VLC system, where the LED-DR is fully utilized to support simultaneous illumination and communication. In addition, two options of the SD-WA-BDP scheme are developed to manage the performance and complexity tradeoff. Simulation results demonstrate the superiority of the proposed scheme.
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription
Add to BibSonomy