10 Mb/s visible light transmission system using a polymer light-emitting diode with orthogonal frequency division...

Area of Science:

• Optoelectronics
• Materials Science
• Communications Engineering

Background:

• Visible light communication (VLC) systems offer high bandwidth and security.
• Polymer light-emitting diodes (PLEDs) are promising for VLC due to their low cost and flexibility.
• Achieving high data rates in PLED-based VLC remains a challenge.

Purpose of the Study:

• To develop a novel PLED transmitter for high-speed visible light communication.
• To demonstrate a record data transmission rate using the developed PLED.
• To investigate the effectiveness of orthogonal frequency division multiplexing (OFDM) and power pre-emphasis for enhancing data rates.

Main Methods:

• Design and fabrication of a new PLED with a bandwidth of approximately 350 kHz.
• Implementation of an optical communication system utilizing the PLED as a transmitter.
• Application of the orthogonal frequency division multiplexing (OFDM) technique for data modulation.
• Employing a power pre-emphasis technique to boost the data transmission rate.

Main Results:

• The newly designed PLED achieved a bandwidth of ~350 kHz.
• A record transmission speed of 10 Mb/s was achieved for a PLED-based VLC system.
• The performance matched single carrier formats using multitap equalization.
• The power pre-emphasis technique was crucial for achieving the high data rate.

Conclusions:

• The developed PLED is suitable for high-speed visible light communication applications.
• OFDM combined with power pre-emphasis is an effective strategy for achieving high data rates in PLED-based VLC.
• This work sets a new benchmark for PLED-based optical communication systems.