Ditsapon Chumchewkul

Email: [email protected]

Project title

Coded orthogonal frequency division multiplexing based massive multiple-input, multiple-output communications

Supervisor

• Dr Charalampos Tsimenidis

Project description

Massive Multiple-Input, Multiple-Output (MIMO) communications are an efficient technology. They improve spectral efficiency of 5G mobile networks.

Orthogonal Frequency Division Multiplexing (OFDM) encodes data on multiple carrier frequencies. Wideband digital communications use the technology. It has many applications.

We are developing novel signal processing techniques. These will be used for coded OFDM based Massive MIMO communications. We are developing techniques for improving the performance of:

• error correcting codes
• channel estimations
• signal waveforms

We will investigate communication systems in frequency and time selective multipath channels. We are doing this through simulation. We are using 5G base station facilities for channel measurements and developments.

Publications

• Chumchewkul D. Performance Evaluation of VPPM Visible Light Communications Based on Simulation with Experiment’s Parameters. In: Proc. in the 15th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON 2018). 2018, Chiang Rai, Thailand.
• Chumchewkul D, Sripimanwat K. Improving the Data Rate of Ultraviolet Communications Using Convolution Code. In: Proc. in the 12th International Symposium on Wireless Personal Multimedia Communications (WPMC’09). 2009, Sendai, Japan.
• Chumchewkul D, Sripimanwat K, et al. MISO Mixed Phase Precoding and its Applications with Turbo Coding Schemes. In: Proc. in ECTI-CON. 2008, Krabi, Thailand.
• Chumchewkul D, Sripimanwat K, et al. Mixed Phase-Precoding Method with Turbo Codes for Wireless-ISI Channel Applications. In: Proc. in the International Workshop on Telecommunications 2004 (IWT2004). 2004, Santa Rita de Sapucai, Minas Gerais, Brazil.
• Pradabphon D, Chumchewkul D, et al. BPSK-Turbo Codes with Spiral Curve Phase Precoding for Wireless-ISI Channel. In: Proc. in the 6th international Symposium on Wireless Personal Multimedia Communications (WPMC’03). 2003, Yokosuka, Kanagawa, Japan.
• Chumchewkul D, Sripimanwat K, et al. Pre-Equalized QPSK-Signal with Turbo Codes for Wireless-ISI Channel. In: Proc. in the 3rd International Symposium on Turbo codes & Related Topics. 2003, Brest, France.

Interests

Wireless communications, optical communications, and embedded systems.

Qualifications

• M.Eng in Information Engineering from King Mongkut’s Institute of Technology Ladkrabang, Thailand