Conferences

2016
• G. Srirutchataboom, N. Tantibut, P. Kovintavewat, L. Wuttisittikulkij, K. Mamat, and W. Phakphisut, “Construction of Column-Weight-Two Irregular LDPC Codes with a Predetermined High Girth,” in Proc. of ITC-CSCC 2016, Okinawa, Japan, July 10-14, 2016, pp.759-762.
• N. Tantibut, A. Bajpai, K. Mamat, T. Phromsa-ard, W. Phakphisut, P. Kovintavewat, and L. Wuttisittikulkij, “BER Performance Study of Column Weight Two Non-Binary LDPC Codes with Predetermined Girth,” in Proc. of ITC-CSCC 2016, Okinawa, Japan, July 10-14, 2016, pp.175-178.
• W. Ruksavong, W. Busyatras, C. Warisarn, L.M.M. Myint, and P. Kovintavewat, “Estimate Track Mis-registration Levels using an Energy Ratio Finding Technique in Bit-Patterned Media Recording Systems,” in Proc. of ITC-CSCC 2016, Okinawa, Japan, July 10-14, 2016, pp.163-165.
• P. Nantivatana, K. Jaruwongrungsee, T. Srited, P. Kovintavewat, and P. Kocharoen, “Visible Light Communication Development Kits Complianted to CP1223 Standard,” in Proc. of ITC-CSCC 2016, Okinawa, Japan, July 10-14, 2016, pp.69-72.
• K. Buahing, W. Busyatras, C. Warisarn, S. Koonkarnkhai, and P. Kovintavewat, “A Performance Improvement of a Rate-5/6 2D Modulation Code in Bit-Patterned Media Recording Systems,” in Proc. of ITC-CSCC 2016, Okinawa, Japan, July 10-14, 2016, pp.53-56.
• A. Bajpai, L. Wuttisittikulkij, A. Kalsi, and P. Kovintavewat, “A subtraction based method for the construction of quasi-cyclic LDPC codes of girth eight,” in Proc. of SIBCON 2016, Moscow, Russia, May 12-14, 2016, pp. 1-4.

2015
• A. Bajpai, L. Wuttisittikulkij, and P. Kovintavewat, “On the Lifting of Girth for Quasi-Cyclic LDPC Codes using Chinese Remainder Theorem,” in Proc. of ITC-CSCC 2015, Seoul, Korea, June 29 - July 2, 2015, pp. 103-106.
• สันติ กูลการขาย และปิยะ โควินท์ทวีวัฒน์, “การใช้ทาร์เก็ตสองมิติแบบไม่สมมาตรในช่องสัญญาณการบันทึกบิตแพทเทิร์นมีเดียแบบ Staggered,” การประชุมวิชาการทางวิศวกรรมไฟฟ้า ครั้งที่ 38, พระนครศรีอยุธยา, 18 - 20 พฤศจิกายน 2558, CM-181, หน้า 589-292.
• P. Panthong, P. Sangwongngam, J. Wetcharungsri, K. Sripimanwat, A. Kaewpukdee, P. Kovintavewat, and L. Wuttisittikulkij, “A Numerical Study on Optical Concentrators for Visible Light Communications,” in Proc. of ITC-CSCC 2015, Seoul, Korea, June 29 - July 2, 2015, pp. 122-125.
• A. Bajpai, L. Wuttisittikulkij, and P. Kovintavewat, “On the Lifting of Girth for Quasi-Cyclic LDPC Codes using Chinese Remainder Theorem,” in Proc. of ITC-CSCC 2015, Seoul, Korea, June 29 - July 2, 2015, pp. 103-106.
• N. Tantibut, A. Bajpai, L. Wuttisittikulkij, and P. Kovintavewat, “Extended Decoding Performance of LDPC and NB-LDPC Codes with IEEE 802.11n Standard,” in Proc. of ITC-CSCC 2015, Seoul, Korea, June 29 - July 2, 2015, pp. 95-98.
• W. Busyatras, C. Warisarn, L. Myint, and P. Kovintavewat, “A Simple TMR Mitigation Approach for Bit Patterned Media Recording Based on Readback Signals,” in Proc. of ITC-CSCC 2015, Seoul, Korea, June 29 - July 2, 2015, pp. 458-460.
• W. Busyatras, C. Warisarn, L. Myint, P. Supnithi, and P. Kovintavewat, “An Iterative TMR Mitigation Method Based on Readback Signals for Bit-Patterned Media Recording,” in Proc. of IEEE International Conference on Magnetics (INTERMAG 2015), Beijing, China, May 11-15, 2015, p. HQ-08.
• C. Warisarn and P. Kovintavewat, “Soft-Output Decoding of 2D Modulation Codes for Bit-Patterned Media Recording,” in Proc. of IEEE International Conference on Magnetics (INTERMAG 2015), Beijing, China, May 11-15, 2015, p. HQ-12.
• S. Koonkarnkhai and P. Kovintavewat, “Study of Fractionally-Spaced Equalizers for Bit-Patterned Media Recording,” in Proc. of IEEE International Conference on Magnetics (INTERMAG 2015), Beijing, China, May 11-15, 2015, p. HQ-13.

2014
• P. Ketwong, A. Arrayangkool, C. Warisarn, L. M. M. Myint, and P. Kovintavewat, “A simple crossover-based coding technique for ITI mitigation in bit-patterned media recording,” in Proc. of APSIPA 2014, Seim Reap, Cambodia, December 9-12, 2014.
• G. Srirutchataboon, A. Bajpai, L. Wuttisittikulkij, and P. Kovintavewat, “PEG-like algorithm for LDPC codes,” in Proc. of iEECON 2014, Pattaya City, Thailand, March 19-21, 2014.
• S. Koonkarnkhai, P. Kovintavewat, and P. Keeratiwintakorn, “A Simple Method to Detect and Correct an Insertion/Deletion Error for Bit-Patterned Media Recording,” in Proc. of ITC-CSCC 2014, Phuket, Bangkok, July 1-4, 2014, pp. 964-965.
• A. Arrayangkool, C. Warisarn, and P. Kovintavewat, “A Study of 2D Coding Schemes for ISI and ITI Mitigation in Bit-Patterned Media Recording Channels,” in Proc. of ITC-CSCC 2014, Phuket, Bangkok, July 1-4, 2014, pp. 960-963.
• W. Busytras, A. Arrayangkool, C. Warisarn, L. M. M. Myint, P. Supnithi, and P. Kovintavewat, “Estimating Track Mis-Registration Based on Readback Signal in Bit-Patterned Media Recording Systems,” in Proc. of ITC-CSCC 2014, Phuket, Bangkok, July 1-4, 2014, pp. 881-884.
• R. Hunkon, P. Supnithi, and P. Kovintavewat, “ANFIS-Based Prediction of Head Performance Downgrade at Quality Test,” in Proc. of ITC-CSCC 2014, Phuket, Bangkok, July 1-4, 2014, pp. 877-880.
• G. Srirutchataboon, A. Bajpai, L. Wuttisittikulkij, and P. Kovintavewat, “A Design of Parity-Check Matrix with Maximized Local Girth for Quasi-Cyclic LDPC codes,” in Proc. of ITC-CSCC 2014, Phuket, Bangkok, July 1-4, 2014, pp. 663-666.
• A. Bajpai, M. Saadi, T. Phromsaard, L. Wuttisittikulkij, and P. Kovintavewat, “Performance Analysis of Non Binary Low Density Parity Check Codes over its Binary Counterpart using Progressive Edge Growth Algorithm,” in Proc. of ITC-CSCC 2014, Phuket, Bangkok, July 1-4, 2014, pp. 14-17.
• P. Panthong, P. Sangwongngam, T. Phromsaard, K. Sripimanwat, A. Kaewpukdee, and P. Kovintavewat, “Practical Optic Design of Illumination Coverage for Indoor Visible Light Communications,” in Proc. of ITC-CSCC 2014, Phuket, Bangkok, July 1-4, 2014, pp. 655-658.
• P. Kovintavewat, A. Arrayangkool, and C. Warisarn, “A Rate-8/9 2D Modulation Code for Bit-Patterned Media Recording,” in Proc. of IEEE International Conference on Magnetics (INTERMAG 2014), Dresden, Germany, May 4-8, 2014, p. CB-07.

2013
• P. Kovintavewat and S. Koonkarnkhai, “Baseline Popping Detection and Correction Algorithms for Perpendicular Magnetic Recording System,” in Proc. of ISEEC 2013, December 18-20, 2013, Pavilion Rim Kwai Resort Kanchanaburi, Thailand, pp.435-440.
• P. Kovintavewat, “The Use of Graph-Based Detection in Iterative Decoding for Multi-track Bit-Patterned Media Recording,” in Proc. of ISEEC 2013, December 18-20, 2013, Pavilion Rim Kwai Resort Kanchanaburi, Thailand, pp. 447-452.
• P. Kovintavewat and S. Koonkarnkhai, “An Improved TA Suppression Method for Coded PR Channels,” in Proc. of ISEEC 2013, December 18-20, 2013, Pavilion Rim Kwai Resort Kanchanaburi, Thailand, pp. 429-434.
• S. Koonkarnkhai, P. Kovintavewat, and P. Keeratiwintakorn, “Trellis-Based Detecting the Insertion and Deletion Bits for Bit-Patterned Media Recording,” in Proc. of ISEEC 2013, December 18-20, 2013, Pavilion Rim Kwai Resort Kanchanaburi, Thailand, pp. 441-446.
• C. Prasartkaew, P. Kovintavewat, and S. Choomchuay3, “Combined Coding Algorithm of LDPC Codes in Bit-Patterned Media Recording Channels,” in Proc. of ISEEC 2013, December 18-20, 2013, Pavilion Rim Kwai Resort Kanchanaburi, Thailand, pp. 463-468.
• C. Prasartkaew, P. Kovintavewat and S. Choomchuay, “Parity Check Matrix Construction of LDPC Codes in Bit-Patterned Media Recording Channels Using Tippett’s Random Number Table,” in Proc. of TENCON 2013, October 22-25, Xi’an, China 2013.
• C. Warisarn, T. Losuwan, P. Supnithi, and P. Kovintavewat, “An Iterative Inter-Track Interference Mitigation Technique for Two-Dimensional Magnetic Recording Systems,” in Proc. of MMM 2013, Colorado, USA, 2013.
• A. Arrayangkool, C. Warisarn, and P. Kovintavewat, “A Constructive Inter-Track Interference Coding Scheme for Bit-Patterned Media Recording System,” in Proc. of MMM 2013, Colorado, USA, 2013.
• N. Chirdchoo, W. Cheunta, K. Saelim, and P. Kovintavewat, “Design and Implementation of a VoIP System for Campus Usage: A Case Study at NPRU,” in Proc. of ISCIT 2013, September 4-6, 2013, Samui Island, Thailand, pp. 261-221.
• A. Arrayangkool, C. Warisarn, and P. Kovintavewat, “A 2D-Interference Mitigation with a Multitrack Recorded-Bit Patterning Scheme for Bit Patterned Media Recording,” in Proc. of ITC-CSCC 2013, June 30 - July 3, 2013, Yeosu, Korea, pp. 683-686.
• N. Bumrungkiat, C. Warisarn, and P. Kovintavewat, “A Magnetized Grain Modeling Method Based on the Image of Real Magnetic Grains for Two-Dimensional Magnetic Recording,” in Proc. of ITC-CSCC 2013, June 30 - July 3, 2013, Yeosu, Korea, pp. 687-690.
• S. Koonkarnkhai, A. Kaewpukdee, and P. Kovintavewat, “A Simple Baseline Popping Detection and Correction for Perpendicular Magnetic Recording Channels,” in Proc. of ITC-CSCC 2013, June 30 - July 3, 2013, Yeosu, Korea, pp. 707-709.
• S. Koonkarnkhai, P. Kovintavewat, and P. Keeratiwintakorn, “Iterative Decoding with Insertion and Deletion Errors for Bit-Patterned Media Recording Channels,” in Proc. of ITC-CSCC 2013, June 30 - July 3, 2013, Yeosu, Korea, pp. 710-713.
• C. Prasartkaew, P. Kovintavewat, and S. Choomchuay, “A Construction of Parity-Check Matrix for Irregular LDPC Codes in Bit-Patterned Media Recording Channels,” in Proc. of ITC-CSCC 2013, June 30 - July 3, 2013, Yeosu, Korea, pp. 681-682.
• T. Thongleam, S. Suwansawang, and P. Kovintavewat, “Low-Voltage High Gain and High CMRR Bulk-Driven Op-amp using Feedforward Technique,” in Proc. of ITC-CSCC 2013, June 30 - July 3, 2013, Yeosu, Korea, pp. 240-243.
• B. Hiransing, A. Jangwanitlert, and P. Kovintavewat, “Three-Level ZVS PS-PWM Inverter for Induction Heating Applications,” in Proc. of ITC-CSCC 2013, June 30 - July 3, 2013, Yeosu, Korea, pp. 396-399.
• A. Arrayangkool, C. Warisarn, L. M. M. Myint, and P. Kovintavewat, “A Simple Recorded-Bit Patterning Scheme for Bit-Patterned Media Recording,” in Proc. of ECTI-CON 2013, May 15-17, 2013, Krabi, Thailand.

2012
• A. Bajpai, G. Srirutchataboon, T. Phromsa-ard, S. Nakpeerayuth, P. Kovintavewat, and L. Wuttisittikulkij, “A Study of Non-Binary Low-Density Parity-Check Codes and Its Applications,” การประชุมวิชาการทางวิศวกรรมไฟฟ้า ครั้งที่ 35 (EECON-35), นครนายก, 12 – 14 ธันวาคม 2555.
• P. Kovintavewat, C. Warisarn, and C. Tantibundhit, “Performance of Interpolated Timing Recovery in Perpendicular Magnetic Recording Channel,” in Proc. of ISEEC 2012, December 11-14, 2012, Golden Beach Cha-Am Hotel, Petchburi, Thailand.
• S. Koonkarnkhai, C. Warisarn, and P. Kovintavewat, “Iterative Decoding for Bit-Patterned Media Recording Channels with Insertion/Deletion Errors,” in Proc. of ISEEC 2012, December 11-14, 2012, Golden Beach Cha-Am Hotel, Petchburi, Thailand.
• K. Thongkhome , A. Kaewpukdee, P. Kovintavewat, and W. Pijitrojana, “Transition Characterization for Perpendicular Heat-Assisted Magnetic Recording System,” in Proc. of ISEEC 2012, December 11-14, 2012, Golden Beach Cha-Am Hotel, Petchburi, Thailand.
• N. Chirdchoo, P. Kovintavewat, N. Wattanamongkhol, L. Wuttisittikulkij, P. Vanichahanunt and W. Srichavengsup, “Performance Evaluation of Channel Reservation Schemes for Reservation-based MAC Protocols with Different Priorities,” in Proc. of IEEE ISCIT’12, Gold Coast, Australia, October 2-5, 2012.
• T. Losuwan, C. Warisarn, P. Supnithi, and P. Kovintavewat, “A Study of 2D detection for Two-Dimensional Magnetic Recording,” in Proc. of ITC-CSCC 2012, July 15-18, 2012, Sapporo, Japan.
• สันติ กูลการขาย และปิยะ โควินท์ทวีวัฒน์, “เทคนิคการลดความซับซ้อนของการลดผลกระทบจากความขรุขระเชิงความร้อน ในช่องสัญญาณผลตอบสนองบางส่วนแบบเข้ารหัส,” การประชุมวิชาการระดับชาติมหาวิทยาลัยราชภัฏนครปฐม ครั้งที่ 4, 12-13 ก.ค. 2555, vol. 1, หน้า 181-189.
• จิรันดร บู๊ฮวดใช้ และปิยะ โควินท์ทวีวัฒน์, “เทคนิคการใช้งานโปรแกรม SCILAB และภาษา PHP ร่วมกัน,” การประชุมวิชาการระดับชาติมหาวิทยาลัยราชภัฏนครปฐม ครั้งที่ 4, 12-13 ก.ค. 2555, vol. 1, หน้า 227-236.
• จิรันดร บู๊ฮวดใช้ และปิยะ โควินท์ทวีวัฒน์, “การประยุกต์ใช้โปรแกรม SCIlAB ร่วมกับ Flash Animation,” การประชุมวิชาการระดับชาติมหาวิทยาลัยราชภัฏนครปฐม ครั้งที่ 4, 12-13 ก.ค. 2555, vol. 1, หน้า 256-264.
• หฤทัย ดิ้นสกุล และปิยะ โควินท์ทวีวัฒน์, “การพัฒนาระบบตรวจวัดสภาพอากาศระยะไกล,” การประชุมวิชาการระดับชาติมหาวิทยาลัยราชภัฏนครปฐม ครั้งที่ 4, 12-13 ก.ค. 2555, vol. 1, หน้า 219-226.
• เฉลิมชนม์ ตั้งวชิรพันธุ์, อนันต์ โสภิณ, อนุสรณ์ สาธุเสน, ขนิษฐา แซ่ลิ้ม, เสาวนีย์ สันติวงศ์ และปิยะ โควินท์ทวีวัฒน์, “การศึกษาสนามแม่เหล็กในกระบวนการทำน้ำร้อนด้วยเทคนิคปรับจุดความร้อน,” การประชุมวิชาการระดับชาติมหาวิทยาลัยราชภัฏนครปฐม ครั้งที่ 4, 12-13 ก.ค. 2555, vol. 1, หน้า 265-272.
• หฤทัย ดิ้นสกุล, โสภาพรรณ สุวรรณสว่าง, และปิยะ โควินท์ทวีวัฒน์, “การพัฒนาระบบตรวจวัดระดับออกซิเจนละลายแบบไร้สายเพื่อใช้ควบคุมเครื่องเติมอากาศในแหล่งน้ำ,” การประชุมวิชาการระดับชาติ ECTI-CARD 2012, 21-22 มิถุนายน 2555.
• A. Kaewpukdee, N. Chirdchoo, P. Kovintavewat, “Transition Characteristics of Longitudinal Heat-Assisted Magnetic Recording Systems,” in Proc. of ISEEC 2011, Nakhon Pathom, Thailand, February 2-5, 2012.
• S. Koonkarnkhai, N. Chirdchoo, and P. Kovintavewat, “Iterative Decoding for High-Density Bit-Patterned Media Recording,” in Proc. of ISEEC 2011, Nakhon Pathom, Thailand, February 2-5, 2012.
• N. Chirdchoo, W.-S. Soh, K. C. Chua, P. Kovintavewat, W. Cheunta, “The Usefulness of Overheard Information for Collision Avoidance in a Single-hop Underwater Acoustic Networks,” in Proc. of ISEEC 2011, Nakhon Pathom, Thailand, February 2-5, 2012.
• P. Kovintavewat and N. Chirdchoo, “Method of Designing an Infinite Impulse Response Equalizer for Magnetic Recording Channels,” in Proc. of ISEEC 2011, Nakhon Pathom, Thailand, February 2-5, 2012.

2011
• S. Koonkarnkhai, P. Keeratiwintakorn, N. Chirdchoo, and P. Kovintavewat, “Two-Dimensional Cross-Track
   Asymmetric Target Design for High-Density Bit-Patterned Media Recording,” in Proc. of ISPACS 2011,
   Chiang Mai, Thailand, December 7 – 9, 2011.
• C. Warisarn, P. Supnithi, and P. Kovintavewat, “Reduced-Complexity Modified Per-Survivor Iterative Timing
   Recovery Using M-Algorithm for Magnetic Recording System,” in Proc. of ISPACS 2011, Chiang Mai,
   Thailand, December 7 – 9, 2011.
• P. Supnithi, P. Kovintavewat, and C. Pupaichitkul, “Thermal Response Characteristics and Model for
   Head/Disk Interaction in TMR Heads” in Proc. of MMM 2011, Scottsdale, AZ, USA, Oct. 30 - Nov. 3, 2011,
   AS-09.
• S. Panichprecha, N. Pongsawatkul, C. Mitrpant, U.Ketprom, and P. Kovintavewat, “Multi-threading in Disk
   Cloner,” in Proc. of ECTI-CON 2011, Khon Kaen, Thailand, May 17 – 20, 2011, pp. 512 – 515.
• A. Kongsakul, C. Tantibundhit, and P. Kovintavewat, “Efficiency Improvement of Data Duplicating Method
   Based on Pipeline Processing,” in Proc. of ICESIT 2011, Phuket, Thailand, Feb 9 – 11, 2011, pp.241-244.

2008
•  สันติ กูลการขาย และ ปิยะ โควินท์ทวีวัฒน์, “การระงับความขรุขระเชิงความร้อนแบบที่ถูกปรับปรุงในช่องสัญญาณการบันทึกแบบแนวตั้ง,”    การประชุมวิชาการทางวิศวกรรมไฟฟ้า ครั้งที่ 31, นครนายก, ฉบับที่ 2 , 29 – 31 ตุลาคม 2008, CM-05, หน้า 665 – 668.
•  P. Kovintavewat and S. Koonkarnkhai, “Thermal Asperity Suppression Based on Least Squares Fitting in    Perpendicular Magnetic Recording Systems,” in Proc. of The 53rd Annual Conference on Magnetism and Magnetic    Materials (Abstracts), Austin, Texas, pp. 211 – 212, November 10 -14, 2008.
•  P. Kovintavewat, C. Warisarn, and P. Supnithi, “An MMSE Infinite Impulse Response Equalizer for Perpendicular    Recording Channels with    Jitter Noise,” in Prof. of ITC-CSCC 2008 , Shimonoseki City, Japan, pp. 929 – 932, July 6 – 9,    2008.
•  T. Nuamcherm, P. Kovintavewat, et al ., “An Improved Proof for RFID Tags,” in Proc. of ECTI-CON 2008, Krabi,    Thailand, vol. II, pp. 737 – 740, May 14 – 16, 2008.
•  S. Makwimanloy, P. Kovintavewat, et al ., “A New Anti-Collision Based on A-Priori Information,” in Proc. of ECTI-CON    2008, Krabi, Thailand, vol. II, pp. 733 – 736, May 14 – 16, 2008.
•  S. Mukviboonchai, P. Kovintavewat, D. Thammasiri, “The Conceptual Framework for the Development of Thailand    Economic Animal Traceability System,” in Proc. of ECTI-CON 2008, Krabi, Thailand, vol. I, pp. 201 – 204, May 14 – 16,    2008.
•  C. Warisarn, P. Kovintavewat, P. Supnithi, “An Infinite Impulse Response Equalizer for Magnetic Recording    Channels,” DST-CON 2008, Miracle Grand Conventional Hotel, Bangkok, Thailand, p. 076, April 21 – 23, 2008.

2007
•  P. Kovintavewat, “Timing recovery in magnetic recording channels,” in Proc. of ECTI-CON 2007, ChaingRai,    Thailand.

2006
•  P. Kovintavewat, “Robustness of per-survivor iterative timing recovery against thermal asperity in perpendicular    recording channels,” in Proc. of ECTI-CON 2006, Ubon Ratchathani, Thailand, vol. I/II, pp. 239 – 242, May 10 – 13,    2006.
•  P. Kovintavewat, “Oversampled timing recovery for magnetic recording channels,” in Proc. of ECTI-CON 2006,
   Ubon Ratchathani, Thailand, vol. I/II, pp. 235 – 238, May 10 – 13, 2006.