Anan Sopin

Rajamangala University of Technology Krungthep

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Virot Wuti

King Mongkut's Institute of Technology Ladkrabang

Kaweewat Tattiwong

Rajamangala University of Technology Lanna

Chanin Bunlaksananusorn

King Mongkut's Institute of Technology Ladkrabang

Pisit Boonsrimuang

King Mongkut's Institute of Technology Ladkrabang

Tanairat Mata

Rajamangala University of Technology Krungthep

Siripan Trakuldit

Nakhon Si Thammarat Rajabhat University

Norasage Pattanadech

King Mongkut's Institute of Technology Ladkrabang

Nakarin Inkamchua

King Mongkut's Institute of Technology Ladkrabang

Napassadol Singhata

Rajamangala University of Technology Krungthep

Saisunee Poungnoiy

Rajamangala University of Technology Krungthep

Cooperative Institutions

King Mongkut's Institute of Technology Ladkrabang

Rajamangala University of Technology Krungthep

Mie University

Rajamangala University of Technology Isan

Bangkok University

King Mongkut's University of Technology North Bangkok

Suan Sunandha Rajabhat University

National Information Society Agency

Kyonggi University

Central Police University

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Proposal of channel estimation scheme for practical V-BLAST MIMO-OFDM system

Nakarin Inkamchua Pisit Boonsrimuang Tanairat Mata Anan Sopin

In wireless communication, multiple input and multiple output technique is often applied with orthogonal frequency division multiplexing (MIMO-OFDM) because of its many advantages such as spectral efficiency, link reliability, diversity gain and so on. In the practical MIMO-OFDM system, it has a signal aliasing problem due to the mismatch of sampling from adding zero padding at both front and rear of data transmission in each OFDM symbol. To solve this problem, the channel estimation by using the new comb-type pilot symbol arrangement scheme is proposed for the practical MIMO-OFDM system. From the computer results, it can be shown that the proposed channel estimation scheme can perform higher system performances than the conventional scheme in the practical V- BLAST MIMO-OFDM system.

Aliasing

10.1109/iciteed.2017.8250478

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Design and Experimental Verification of an Integrated Boost-Flyback Converter with Voltage Multiplier

Kaweewat Tattiwong Anan Sopin Saisunee Poungnoiy Phuri Kalnaowakul Napassadol Singhata

This paper introduces the design and experimental validation of an integrated boost-flyback converter with a voltage multiplier (IBFCVM). It describes the operation of the IBFCVM and provides its essential voltage and current equations. A phototyped circuit design for a 72W, 12V-to-120V IBFCVM is presented. Experimental results demonstrate that the proposed IBFCVM exhibits effective output voltage regulation, achieving an impressive efficiency of 89.9%.

Voltage multiplier

10.1109/ieecon60677.2024.10537921

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Performance Comparison between a two-switch and RCD clamp forward converters

Virot Wuti Amata Luangpol Kaweewat Tattiwong Anan Sopin Phaophak Sirisuk

This paper presents performance comparison between a two-switch and RCD clamp forward converters. The performance comparison is carried out through experimentation on the two prototype circuits, which have the same circuit specifications and similar component values. Aspects to be compared include voltage stress of switching components, output voltage regulation, transient response due to a step-load, and efficiency. Test results show that, while the two converters exhibit equal performance on output voltage regulation, the two-switch forward converter has a lower voltage stress on power switching devices, faster transient response, and higher efficiency than the RCD clamp forward converter.

Transient (computer programming)

Clamp

Voltage spike

Transient voltage suppressor

10.1109/iceast.2019.8802553

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Citations (6)