Resource-Optimized Design of Bit-Shuffle Block Coding for MIMO-VLC

Abstract

Designing a run-length-limited (RLL) code for a visible light communication (VLC) system requires consideration of several performance factors including hardware overhead, transmission efficiency, and direct current (DC) balance. This paper proposes a novel RLL code called bit-shuffle block codes for high-rate multiple-input multiple-output (MIMO)-VLC systems that can offer excellent constant illumination and transmission efficiency with extensively-optimized hardware resources. Due to the structure of the Omega network, the proposed bit-shuffle block coding method can increase transmission efficiency and significantly reduce hardware overhead. In addition, it can generate codewords dynamically, which guarantees DC balance with multiple LEDs to serve the dual purpose of illumination and communication. Experimental results confirm that the proposed bit-shuffle block coding demonstrate excellent performance in resource optimization, and can be a viable solution for MIMO-VLC applications that can send large volumes data with limited hardware resources.

Keywords

• Multiple-input multiple-output (MIMO)
• visible light communication (VLC)
• run-length-limited (RLL) codes
• hardware resource optimization
• bit-shuffling