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EDUCATION :
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NAME: Heung-Gyoon Ryu ( E-mail: ecomm@cbu.ac.kr Home page : http://commlab.chungbuk.ac.kr Position: Professor in
the Department of Electrical, Electronic and
Computer Engineering, EDUCATION: March 1978 - Feb. 1982, Department of Electronic Engineering,Seoul National University, Korea (B.S.) March 1982 - Feb. 1984, Department of Electronic Engineering,Seoul National University, Korea (M.S.) March 1984 - Feb. 1988, Department of Electronic Engineering, Seoul National University, Korea (Ph.D.) PROFESSIONAL
EXPERIENCE: Feb. 1988 – March 1990, Lecturer, Department of Electronic Engineering, Chungbuk National
University, Korea March 1990 - Feb. 1994, Assistant Professor, March
1994 -
Feb. 1999, Associate Professor, Feb. 1999 - Now, Professor,
Department of Electrical, and Computer Engineering, Chungbuk
National University, March 1984 – Feb.1985, Research Member，ETRI（Electronic
Telecommunication Research Institute）, Korea March 1994 – Feb.2000, Adjunct Research Member，ETRI（Electronic
Telecommunication Research Institute）, Korea January
2007 - Feb. 2007, Visiting Professor, March 2002 – Feb. 2004, Chief Director March.1988 - now, Committee Member, Evaluation Committee Board of Industrial
Technologies, Korea Institute of
Industrial Technology Evaluation and Planning, Ministry of Commerce, Industry
and Mach 1992 - now, Committee Member, Ministry of Information and Communication, 1990 – now : Paper Reviewer of the IEEE Transaction on
the Vehicular Technology, IEEE Transaction on Communication, JSAC, IEEE
Communication Letters, IEEE Transaction on Signal Processing, IEEE Signal
Processing Letters, etc Since 1988 - now, he has been session chair and member of program committees for many National/International conferences. AWARD : “2002 ACADEMIC AWARD” from the “BEST PAPER AWARD” in the 4th International Conference on Wireless Mobile
Communications (ICWMC 2008) Teaching subjects: -
undergraduate : Communication Engineering, Digital
Communication, Information and Communication Engineering, Signal and Information
System, etc -
graduate : CDMA
Communication Engineering, Digital Mobile Communication system, Wireless Communication System (WLAN, GPS, RDS), Data Modulation, Transmission and Switching Satellite Communication System, Spread Spectrum Communication System, Data Detection and Estimation, Design of Communication Circuit and System, RF Micro Electronics,etc Fields of research interest: -
New Generation -
MIMO, OFDM system for Wireless, Mobile Communication -
Satellite communication and
HAPS communication -
Spread Spectrum System , AJ and LPI Technology -
GPS, WLAN, -
Welfare Communication for
the Disabled Person -
Human Body Channel
Communication -
PLC(power line
communication) and Home Networking, -
Communication System for
Assisted Living, -
Ubiquitous Health Care and
System Development, etc From 1988 until now, Professor Ryu has published: 1)
over 282 papers IEEE and 2)
over 210 papers in international
and domestic conferences. Currently working on and has completed over 35 research projects from the Korean government, ETRI, ADD and Samsung, LG, etc. He has supervised successful completion 17 PhD students (2 from Vietnam and 2 from China) and 83 MSc students. Currently he is supervising 7 PhD students and 6 MSc students. Publication Lists (within
recent 5 years): -
24 IEEE and IEE Transaction papers -
Submitted papers to IEEE (under review): 32 papers -
International conference papers: over 58 papers -
Domestic regular journal papers: about 68 papers -
Domestic conference papers: about 19 papers -
Submitted or registered -
-
-
European Patent : 3
Journal Papers :
(1) “DESIGN OF DDFS-DRIVEN PLL FREQUENCY SYNTHESIZER
WITH REDUCED COMPLEXITY,” IEEE Trans. on Consumer Electronics, Vol.47, No.1, pp.194-198, Feb. 2001.
(2) “Reduced-Complexity Design for Triple-Tunable
Frequency Synthesizer, IEE Electronic Letters, Vol.37, No.8, pp. 482-484, April 2001.
(3) “Effects of Partial-band Noise interference on Hybrid
DS/SFH MSK System in the Rayleigh Fading Channel," IEE Electronic Letters, Vol.37, No.16, pp.1039-1041, 2nd
August 2001.
(4) "PAPR Reduction using Soft Clipping and ACI Rejection in OFDM
System," IEEE Transaction on Consumer Electronics, Vol.48, No.1, pp.
17-22, Feb. 2002.
(5) "A New PAPR Reduction Scheme: SPW (sub-block phase weighting)," IEEE Transaction on Consumer Electronics, Vol.48, No.1, pp
81-89, Feb. 2002.
(6) "A New Triple-Controlled Type Frequency Synthesizer Using
Simplified DDFS-driven Digital Hybrid PLL System," IEEE Transaction on Consumer Electronics,Vol.48,
No.1, pp.63-71, Feb. 2002.
(7) “DLT Replacement and Synchronization in the Digital
Hybrid PLL Frequency Synthesizer," IEEE Transaction on Consumer Electronics, Vol.48, No.1, pp.151-156, Feb. 2002.
(8) "Analysis and minimization of phase noise of the digital hybrid
PLL frequency synthesizer," IEEE Transaction on Consumer Electronics, Vol.48, No.2, pp.304-312, May 2002.
(9) “Performance Analysis of Overlapping BFSK DS/SFH-SSMA
System in the Presence of Multi-tone Jamming,”
(10) “A New Combined Method of the Block coding and Pre-distortion for the Nonlinear Distortion Compensation,”
(11) “Phase Noise Analysis of the OFDM Communication
System by the Standard Frequency Deviation,”
(12) “Analysis of switching characteristics of the
digital hybrid PLL frequency synthesizer,”
(13)
“NONLINEAR ANALYSIS OF THE PHASE NOISE IN THE OFDM COMMUNICATION SYSTEM,”
(14) “Dummy Sequence Insertion (DSI) for PAPR Reduction in the OFDM Communication System,” IEEE Transaction on Consumer Electronics, vol.50, no.1, pp.89-94, Feb. 2004.
(15) “Improvement of Power Efficiency of HPA by the PAPR Reduction and Pre-distortion,”IEEE Transaction on Consumer Electronics, vol.50, no.1, pp.119-124, Feb. 2004.
(16) “Effects of frequency instability caused by phase noise on the performance of the Fast FH communication system,” IEEE Transaction on Vehicular Technology, vol.53, no.5, pp. 1626-1632, September 2004.
(17) “BER Analysis of Clipping Process in the Forward Link of the OFDM-FDMA Communication System,” IEEE Transaction on Consumer Electronics, vol.50, no.4, pp.1058-1064, Nov. 2004.
(18) "Threshold IBO of HPA in the Pre-distorted OFDM Communication System" IEEE Transaction on Broadcasting, vol.50, no.4, pp.425-428, Dec. 2004.
(19) “PAPR reduction of the low complexity phase weighting method in OFDM communication system,”IEEE Transaction on Consumer Electronics, vol.51, no.3, pp.776-782, August. 2005.
(20) "An Improved ICI reduction Method in OFDM Communication System" IEEE Transaction on Broadcasting, vol.51, no.3, pp.395-400, Sept. 2005.
(21) “Power Spectrum Analysis of the Cross/Inter-modulation in the
Non-linear LNA,”
(22)“A
Study on the CI-OFDM Communication System for the High Quality and High Speed
Communication System,”
(23)
"Design and Analysis of Side Information Embedded PTS Scheme in the OFDM
Communication System,"
(24) ”System
Design and Analysis of MIMO SFBC CI-OFDM System against the Nonlinear
Distortion and Narrowband Interference" IEEE Transaction on Consumer
Electronics, vol.54, no.2, May 2008.
(25) “ICI Compensation in MISO-OFDM System
Affected by Frequency Offset and Phase Noise” Journal of Communication and Computer,
Vol.5, no.12, pp.32-38, Dec. 2008.
(26) “Combination
of PAPR Reduction and linearization
for the OFDM Communication System,”
Wireless Communications and Mobile Computing, Vol.10, Issue 5, May March, 2010.
(27) “Suppression of ICI and
MAI in SC-FDMA Communication System with Carrier Frequency Offsets,” IEEE Transaction on Consumer Electronics, vol.56,
no.2, pp.359-365, May, 2010.
(28) ”Inter-subcarrier
interference compensation in the frequency-hopped single-carrier frequency
division multiple access communication system," IET Commun., Volume 4,
Issue 12, p.1443–1451, 13 August 2010.
(29)
“Combination of PAPR Reduction and linearization for the OFDM Communication
System," Wireless Communications and Mobile Computing, Vol.10, Issue 5, May,
2010.
(30)“Joint estimation and
suppression of phase noise and carrier frequency offset in multiple-input
multiple-output single carrier frequency division multiple access with
single-carrier space frequency block coding," IET Commun., Volume 4, Issue
16, p.1998 - 2007, November 5 2010.
(31) "ICI problem and compensation in MIMO SC-FDMA system with SC-SFBC scheme," International Journal of Communication
Systems, Volume 23, Issue 12, Pages: 1521–1536, December 2010.
(32)
“Quadrature Amplitude Position Modulation
Combined with Multicarrier Communication System” Lecture Notes in Computer
Science, ISSN 0302-9743, Springer Verlag, 22th-24th Sept. 2011.
(33) “Wireless Multimedia Acoustic Transmission
with MIMO-OFDM ” Lecture Notes in
Computer Science, ISSN 0302-9743,
Springer Verlag, 22th-24th
Sept. 2011.
(34) “ Multicarrier-Based QAPM Modulation System for the Low Power Consumption
and High Data Rates” Mobile Networks and Application, Volume 17, Number 1, pp.
45-52, February 2012.
(35) “On the Performance of
Covariance Based Spectrum Sensing for Cognitive Radio,”IEEE Transactions on Signal Processing, Vol. 60, Issue 7, pp. 3670 – 3682, July 2012.
(36) “Compensation of RF impairment in multi-band
receiver based on RF sub-sampling,” AEUE - International Journal of Electronics and
Communications, Volume 66, issue 8, pp. 613-618, Aug. 2012
(37)
”ICI Mitigation in Concurrent Multiband Receiver due to the Phase Noise and IQ
Imbalance," International Journal of Electronics, Volume 99, Issue 6, pages
797-809, June 2012.
(38) “Research on Secure Data Collection in Wireless Multimedia Sensor Networks,” Computer Communications, Volume 35, Issue 15, Pages 1902–1909, 1 September 2012.
(39) "Synchronization Control and Compensation of STO and CFO by Sub-Sampling Method," Communications in Computer and Information Science 310 pp. 37-45, Aug. 23-25, 2012.
(40) "Analysis of Receiver Feedback Closed Loop Pre-Distortion to Compensate for Nonlinear HPA and Foliage Attenuation," Lecture Notes in Computer Science 7425, pp. 114-121, Aug. 23-25, 2012.
(41) "Carrier Aggregation Receiver with Beamformer and Compensation of Doppler Effects and Timing Offset," Communications in Computer and Information Science 350 pp. 1-9, Dec. 2012.
(42) "ICI Mitigation in Concurrent Multiband Receiver due to the Phase Noise and IQ Imbalance," International Journal of Electronics, Volume 99, Issue 6, pages 797-809, June 2012.
(43) "Improvement of the MCMA blind equalization performance using the coordinate change method in 16-APSK," Lecture Notes in Computer Science 7861, pp.386-392, May 9 2013.
(44) "Chaotic Wireless Communication System Using Retrodirective Array Antenna for Advanced High Security," Lecture Notes in Computer Science 7861Lecture Notes in Computer Science 7861, pp.482-490, May 9 2013.
(45) "Enhanced Security Communication System Using Digital Retrodirective Array Antenna," International Journal of Security and Its Application (IJSIA), Vol.7, No.3, pp. 111-120, May 2013.
(46) "Automatic Tracking of Bandpass Sampling OFDM Signals in Mobile Environment for Enhanced Security Communication," International Journal of Security and Its Application (IJSIA), Vol.7, No.4, pp.135-144, July 2013.
(47) "Performance improvement of Constant Modulus algorithm Blind Equalizer for 16 QAM modulation," ICIC Express Letters, Volume 7, Issue 4, Pages 1377-1383, 2013.
(48) "A New Physical Layer Transmission Scheme for LPI and High Throughput in the Cooperative SC-FDMA System," JOURNAL OF COMMUNICATIONS AND NETWORKS, VOL. 15, NO.5, pp.457-463, Oct. 29, 2013.
(49) "SNR Estimation in OFDM System by the Correlation of Decision Feedback Signal," Wireless Personal Communications, Volume 73, Issue 3, Pages 753-765, December 2013.
(50) "Analysis of power efficiencies of polar transmitter and HPA in OFDM communication system," International Journal of Electronics, Volume 101, Issue 2, pages 255-270, Feb., 2014.
International Conference papers :
(1) ICICS 2005 (Bangkok, Thailand 2005, Dec. 3-6,) “An SLM-based Real-time PAPR Reduction Method Using Dummy Sequence Insertion in the OFDM Communication,”
(2) AMPC 2005 (Suzhou, China 2005, Dec. 7-9) “ High Speed Digital Hybrid PLL Frequency Synthesizer “
(3) ICC 2006 (ISTANBUL, Turkey 2006, June11-15 "A PAPR Reduction of MC-DS-CDMA Signal by Spectrum Phase Control (SPC) Method,“
(4) ICCCAS 2006 (Guilin China, 2006, June 24-28,) “SFBC-based MIMO OFDM and MIMO CI-OFDM Systems in the Nonlinear and NBI Channel,” “A Computational Complexity Reduction Scheme Using Walsh Hadamard Sequence in SLM Method,” “IMD Anaysis-Based TC-CI/OFDM System for PAPR Reduction and BER Improvement,”
(5) ITC-CSCC 2006 (Chiang Mai, Thailand, 10-13 July 2006) “PAPR Reduction in OFDM Transmission of Uplink Mobile Communication Systems “
(6) WASA 2006 (Xi’an China, 2006, August 15-17) "Design and Analysis of Side Information Embedded PTS Scheme in the OFDM Communication System," “A Study on the CI-OFDM Communication System for the High Quality and High Speed Communication System,”
(7) APWCS 2006 (Daejeon Korea, 2006, August 24-26) “DFT Spreading Method Considering the Pilot Tone Position in the OFDM System,”
(8) ICWMMN 2006 (Hangzhou, China, 2006, November 6-9) “Improved SPW and Predistortion to Overcome the Nonlinear Distortion of the OFDM Communication System”
(9) IEEE TENCON (Hongkong, November 14-17, 2006) “PAPR Reduction of the OFDM Signal by the SLM-based WHT and DSI Method,"
(10) 25th AIAA International Communications Satellite System Conference (ICSSC), Seoul, Korea, April 10-13, 2007 “PAPR Reduction using DFT Transform of the OFDM Signal for the High-Speed Satellite Communication,"
(11) ICC 2007 (Glasgow, UK, June 24-28 2007) "The Impact of the I/Q Mismatching Errors on the BER Performance of OFDM Communication Systems,”
(12) ITC CSCC 2007 (Busan, Korea, July 8-11 2007) "A Complexity Reduction Scheme for SLM-based OFDM Communication System”
(13) IEEE Pacific Rim Conference (Victoria, B.C., Canada, August 22-24, 2007) “A Side Information Embedded PTS Scheme in the OFDM Communication System” “A PAPR Reduction Method using Constraint Code in Multicode CDMA System “
(14) WICOM Conference (The 3rd IEEE International Conference on Wireless Communications, Networking and Mobile Computing) (Shanghai, China, Sep. 21-23, 2007) “High Quality OFDM Communication System based on Carrier Interferometry and Digital Linearization of HPA”
(15) ISCIT 2007 Conference (The 7th International Symposium on Communications and Information Technologies, ISCIT 2007, 16-19 October 2007, Sydney, Australia) "Nonlinear Distortion Reduction for the Improvement of the BER Performance in OFDM Communication Systems” “Interleaving Method without Side Information for the PAPR Reduction of OFDM System”
(16) ICSPC’07 (2007 IEEE International Conference on Signal Processing and Communication, ICSPC07 24-27 November 2007 in Dubai, United Arab Emirates.) “A PAPR Reduction Method using New ACE (active constellation extension) with Higher Level Constellation.
(17) ICC 2008 (Beijing, China May 19-23 2008) "Design and Performance Analysis of the SPW Method for PAPR Reduction in OFDM Systems”
(18) ICCCAS 2008, (Xiamen China, June 25-27, 2008) “Frequency Offset and Phase Noise Influence and its Compensation in the DFT-Spread OFDM System”
(19) ITC-CSCC 2008 ( Shimonoseki, Japan, July 6-9, 2008) "Advanced CI/OFDM System Robust to the Phase Noise"
(20) ICWMC 2008 (Athens, Greece, July 27-Aug.1, 2008) “Design and Performance Evaluation of the MIMO SFBC CI-OFDM Communication System,”
(21) WICOM Conference (The 4rd IEEE International Conference on Wireless Communications, Networking and Mobile Computing, Dalian, China, October 12-14, 2008) “ICI Compensation in MISO-OFDM System Affected by Frequency Offset and Phase Noise”
(22) APCC (Asia Pacific communication conference) 2008 (Tokyo, Japan, Oct. 14-16) “Co-ordinate Interleaving in the OFDM System and Performance Improvement in Fading Channel”
(23) JC-SAT 2008 (2008 Joint Conference on Satellite Communications, Pusan Korea, Nov.6-7, 20, 2008.) “Complexity Reduction of the OFDM Communication System using SPW Method for the IMD Minimization”
(24) ICACT 2009 (International Conference on Advanced Communication Technology, Phoenix Park, Korea, Feb.15-28. 2009) “Water Filling Algorithm for the Throughput Improvement of FH-OFDM System,” “IET conference on Assisted Living 2009”, The IET, Savoy Place, London, UK, 24 - 25 March 2009. “Design of Smart refrigerator for Ubiquitous Healthcare,” “IET conference on Assisted Living 2009”, The IET, Savoy Place, London, UK, 24 - 25 March 2009. “Motion Noise Analysis of ECG Signal using Accelerometer,” “IET conference on Assisted Living 2009”, The IET, Savoy Place, London, UK, 24 - 25 March 2009. “Walking Navigation System for the Blind Person,”
(25) WOCN 2009 (The Sixth IEEE and IFIP International Conference on wireless and Optical communications Networks,Cairo, Egypt, 28-30 April 2009 “PNS Algorithm for the SC-FDMA Communication System with Phase Noise,” “Sub-channel Allocation in Multi-user MIMO-OFDMA Communication System,”
(26)ITC-CSCC 2009 (Jeju, Korea, July 5-8, 2009) " System Capacity of DVB-S2 by Adaptive Coding and Modulation for Ka-band Mobile Satellite channel" “ICI Analysis and Suppression in FH/SC-FDMA Communication System”
(27) SPACOMM 2009 ( International Conference on Advances in Satellite and Space Communications (SPACOMM 2009), Colmar France, pp. 123-127, July 20-25, 2009) "Analyses and Suppression Method of Frequency Offset and Timing Offset in FH-OFDM System”
(28) PIERS 2009 Moscow (Progress In Electromagnetics Research Symposium, Moscow, Russia, pp. 384-388, August 18-21, 2009) “ICI Suppression Method for the DFT-Spread OFDM Communication System with Phase Noise” “Biological Measurement in Healthcare Refrigerator”
(29) ISCIT 2009 Conference (The 9th International Symposium on Communications and Information Technologies, ISCIT 2009, 28-30 Sept. 2009, Incheon, Korea) “Joint Suppression of Phase Noise and CFO by Block Type Pilots” "Performance Improvement of OFDM System using CAZAC Sequence and Adaptive Pre-distorter”
(30) ACCESSNETS 2009 (International Conference on Access Networks 2009, Hong Kong, China, 1-3 November, 2009) “Analysis and Suppression of MAI in WiMAX Uplink Communication System with Multiple CFOs,”
(31) WCSP 2009 (International Conference on Wireless communication and Signal Processing 2009, Nanjing, China, 13-15 November, 2009) “Multi-Access Interference in LTE Uplink with Multiple Carrier Frequency Offsets,”
(32) RWS 2010 ( 2010 IEEE Radio and Wireless Symposium , New Orleans, USA, Jan. 10-14, 2010) “Adaptive Modulation for Maximum Throughput of Multi-User SC-FDMA System in Doubly Selective Channel,”
(33) GeMIC 2010 (German Microwave Conference 2010, Berlin, Germany, March 15-17. 2010) ”LTR Analysis and Signal Processing for Concealed Explosive Detection,”
(34) APWCS 2010 (The 7th IEEE VTS Asia Pacific Wireless Communications Symposium ), National Sun Yat-sen University, Kaohsiung, Taiwan, 20-21 May 2010. “Fast SNR Estimation Algorithm and Complexity Comparison” “Comb Type Pilot Assignment and PAPR Reduction in NC-OFDM-based Cognitive Radio System.”
(35) VTC 2010-Spring (2010 IEEE 71st Vehicular Technology Conference), Taipei, Taiwan, May 17-29, 2010. “A Time Domain Inverse Matrix Receiver for CFO Suppression in WIMAX Uplink System”
(36) PIERS 2010 (The 28th Progress In Electromagnetics Research Symposium), Cambridge, USA, 5-8 July, 2010. “ Matrix Calculation and Compensation of Multiple CFO Interferences in the OFDMA Uplink Communication System.” “Bioelectrical Impedance Analysis by Multiple Frequencies for Health Care Refrigerator.”
(37) ISBC2010 (The 4th International Symposium on Broadband Communications) The Equatorial Hotel, Melaka, Malaysia, 11-14 July, 2010 ” Adaptive ICI cancellation method for compensating the RF impairments in 3G-LTE SC-FDMA system.” ”Permutation Entropy for the Detection of Data Traffic Anomalies in UMTS Networks.”
(38) 2010 IEEE International Conference on Wireless Information Technology and Systems (ICWITS 2010), Hilton Hawaiian Village, Honolulu, Hawaii, USA, Aug. 28th - Sep. 3rd, 2010. " Design and Performance Analysis of PSPK Modulation for WBAN."
(39) Proceeding of the 2010 Joint Conference on Satellite Communications (JC-SAT 2010), Gyeongju, Korea, pp.177-182, Nov. 28-29, 2010. “A Effective New SLM method in DFT spreading OFDM system using Comb type pilot in jamming environment”
(40) Proceeding of the 16th Asia-Pacific Conference on Communications (APCC 2010) Auckland, New Zealand, pp.122-127, Oct. 31- Nov.3, 2010. " Suppression of Synchronization Errors in OFDM Based Carrier Aggregation System."
(41) Proceeding of the 11th International Conference on Computer, Communication Systems (ICCCS 2010), Daegu University, Nov. 4, 2010. " FH OFDM System using DFT Spreading and New SLM for The PAPR Reduction and Comb Type Pilot Assignment." " Adaptive Modulation System Using SNR Estimation Method Based on Correlation of Decision Feedback Signal." "Phase Noise Analysis and Performance Evaluation of Wireless ICS Repeater based on OFDM System." "PNS Algorithm and Simulink Design of Wireless OFDM ICS Repeater with Phase Noise."
(42) The 7th International ICST Conference on Broadband Communications, Networks, and Systems (BROADNETS 2010) , Athens, Greece, October 25-27, 2010 ” Detecting TCP Traffic Dynamical Changes UMTS Networks.”
(43) Proceeding of the International Conference on ICT Convergence 2010 (ICTC 2010) Ramada Plaza Hotel, Jeju Island, Korea, Nov. 17-19, 2010. "Suppression of Carrier Frequency Offset and Phase Noise in Adaptive Bit Loading OFDM System" " Analysis of FH Multi-User DFT spreading OFDM System For Anti-Jamming.”
(44) Proceeding of the SDR 2010 Technical conference and Product Exposition, pp.277-281, Washington DC USA, Nov. 30- Dec. 3, 2010. " Compensation of Symbol Clock Offset and Carrier Frequency Offset in the Multi-Band DFT spreading OFDM System”
(45) Proceeding of 2011 IEEE Radio and Wireless Symposium (RWS 2011), pp.681-684, Phoenix, USA, Jan. 16-19, 2011. “Efficient SNR Estimation in OFDM System.” “Analysis and Design of SLM based DFT spreading OFDM system for Active Anti-jamming system.”
(46) Proceeding of the Fourth IFIP International Conference on New Technologies, Mobility and Security (NTMS 2011), Paris, France, February 7 to 10, 2011. ”High Power Efficiency and Low Nonlinear Distortion for Wireless Visible Light Communication.”
(47) Proceeding of the ICACT2011, the 13th International Conference on Advanced Communication Technology, Phoenix Park, Gangwon-Do, Republic of Korea , February 13~16, 2011. ” Performance Analysis of Parallel Acoustic Communication in OFDM-based System.” ” A Fast and Accurate ICI Cancellation with Feedback Correction for the LTE-Advanced Uplink System.” ” Design of QAPM Modulation System with High Power Efficiency and SIMULINK Evaluation.” ” PNS Algorithm and FPGA Design of Wireless OFDM System." ” Time Domain Estimation and Frequency Domain Correction of CFO and STO offset in OFDM system.” ” Obstacle Recognition System using Ultrasonic Sensor and Duplex Radio-Frequency Camera for the Visually Impaired Person.”
(48) IEEE International Symposium on Wireless Pervasive Computing 2011, ISWPC, Feb, 2011. " A QAPM(Quadrature Amplitude Position Modulation) for Low Power Consumption Communication."
(49) Proceeding of German Microwave Conference 2011 (GeMIC 2011), Darmstadt, Germany, March 14-16 2011. ” LTR Analysis for Fast Concealed Weapon Detection.“
(50) Proceeding of the WTS 2011, World Telecommunication Symposium, New York, USA, April, 12-15, 2011. “An Efficient Correction of Carrier Frequency Offsetand Sample Timing Offset by Feedback Method.” “A Fast and Efficient Adaptive Channel Equalizer for OFDM-Based Wireless Relay System.”
(51) Proceeding of the 2011 Eighth International Conference on Wireless and Optical communications Networks (WOCN2011), Paris, France, 24-26 May 2011. “Design and Performance Analysis of QAPM Modulation in Multi-Path Channel.” “Adaptive Equalizer and Compensation of ICI in the Wireless Repeater System." “Group-Oriented Multiuser Beamforming-OFDM for Different QoS Requirement.”
(52) Radar Conference (RADAR) 2011 IEEE Conference, pp. 979 – 984, Kansas City, MO, USA 23-27 May 2011. ”Fast Concealed Weapon detection via LTR analysis."
(53) Proceeding of the 54th International Midwest Symposium on Circuits and Systems (IEEE MWSCAS 2011), Yonsei University, Seoul, Korea, August 7-10, 2011. “Compensation of Timing Offset and Frequency Offset in Multi-band Receiver based on RF Sub-Sampling.
(54) Proceeding of the IEEE MTT-S International Microwave Workshop on Intelligent Radio for Future Personal Terminal (IMWS-IRFPT 2011), KAIST, Daejeon, KOREA, 24-25 August 2011. “Wireless Repeater with Adaptive Equalizer and Phase Noise Compensator for LTE-Advanced Uplink.”
(55) Proceeding of 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, Houston, pp.487-491, TX, USA, 5-9, Dec. 2011. “Combination of QAPM and OFDM for High Power Efficiency and Spectral Efficiency.”
(56) The 14th International Conference on Advanced Communication Technology (ICACT 2012), pp. 511-514, Phoenix Park, PyeongChang, Republic of Korea , February 19~22, 2012. ”A Efficient Compensation of Carrier Frequency Offset with Fast Processing Matrix.”
(57) 2012 The First International Conference on Advances in Vehicular Systems, Technologies and Applications (VEHICULAR 2012), pp.18-22, Venice, Italy, June 24-29, 2012. “Efficient Adaptive Equalizer Combined with LDPC Code for Vehicular Communications.”
(58)2012 International Conference on Communications (ICC 2012), Ottawa, Canada, June 10-15, 2012. ” Analysis and Suppression of Effects of CFO and Phase noise in WFMT Modulation for Vehicular Communications.”
(59) 2012 International Conference on Information Science and Applications (ICISA), Suwon, Korea, May 23-25 2012. “Wireless Sensor Network Localization with Autonomous Mobile Beacon by Path Finding”
(60) 2012 The First International Conference on Advances in Vehicular Systems, Technologies and Applications (VEHICULAR 2012), pp.18-22, Venice, Italy, June 24-29, 2012. “Efficient Adaptive Equalizer Combined with LDPC Code for Vehicular Communications”
(61) 2012 The International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2012), Sapporo, Hokkaido, Japan, July 15-18, 2012. “Improvement of Power Efficiency of the HPA by Receiver Feedback Closed Loop Pre-Distortion”
(62) 7th International Conference on Communications and Networking in China (CHINACOM 2012), Kunming, China, August 7–10, 2012. “Adaptive NLMS Pre-distorter of HPA with Memory Effect” “Performance Comparison of Turbo Equalization Using Convolutional and Turbo Code”
(63) 18th Asia-Pacific Conference on Communications (APCC 2012), Jeju, Korea, October 15-17, 2012. “Closed-Loop Satellite Communication System for High Efficiency Transmission”
(64) Third International Conference on ICT Convergence (ICTC 2012), Jeju, Korea, October 15-17, 2012. “Performance Evaluation of Chaotic CDSK Modulation System with Different Chaotic Maps” “Improvement and Comparison of Modulus Algorithm Blind Equalizer Learning Curve in Time and Frequency Domain” “Analysis and Design of QAPM Modulation Based on Multi-Carrier Using Compressive Sensing for Low Power Communication” “Analysis and Performance Evaluation of Turbo Equalizer for Fast Equalization in Single-Carrier System” “Mitigation of Multipath in Steel Wall Channel of Ultrasonic Communication System” “Offset and Frequency Offsets in Multi-Band Receiver System”
(65) IET ICWCA 2012 The IET International Conference on Wireless Communications and Applications , ICWCA 2012, Kuala Lumpur, Malaysia, October 8-10, 2012. “Mathematical Relationship between Signal-to-Noise-Ratio and Cyclic Prefix Length in the OFDM System”
(66) 2012 Military Communications Conference, pp. 116-120, Orlando Florida USA, October 29-Nov. 1, 2012. “Analysis and Design of QAPM Modulation using Compressive Sensing for Low Power Communication”
(67) 2013 27th of the International Conference on Information Networking (ICOIN 2013), pp. 556-559, Bangkok, Thailand, Jan. 27-30, 2013. “An Efficient Blind Turbo Equalizer for Compensating Doppler Effects” “Performance Evaluation of DCSK System with Chaotic Maps”
(68) The 15th International Conference on Advanced Communication Technology (ICACT 2013), Phoenix Park, PyeongChang, Republic of Korea, Jan. 27-30, 2013. "Analysis of Digital Retrodirective Array System Considering Multipath Signal" "Coordinate Change and SAG MCMA Equalizer in the Mobile Satellite Communication System Signal"
(69) The 15th International Conference on Advanced Communication Technology (ICACT 2013), Phoenix Park, PyeongChang, Republic of Korea, Jan. 27-30, 2013. "Design of Chaotic CDSK Modulation System using Different Chaotic Maps" "Multi-band Receiver with Pre-FFT Beamformer for Wireless Communications" "An Efficient Blind Pseudo Turbo Equalizer with CMA and SAGMCMA for Single-Carrier System"
(70) 2013 International Conference on Green and Human Information Technology(ICGHIT 2013), Hanoi, Vietnam, Feb. 27-March 1, 2013. "Performance Analysis of Digital Retrodirective Array Antenna System in Presence of Frequency Offset" "Blind beamforming using the MCMA and SAG-MCMA algorithm with MUSIC algorithm" "Automatic Tracking Angle of Arrival of Bandpass Sampling OFDM Signal by MUSIC Algorithm"
(71) 2013 IEEE Wireless Communications and Networking Conference (WCNC), Shanghai, P.R. China, April 7-10, 2013. "Frequency Domain Compressive Sensing of Multicarrier-Based QAPM System" "Application of Full-Duplex Wireless Communication System on Echo Cancellation"
(72) 2013 The International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2013), The Ocean Resort Yeosu, Korea, June 30-July 3, 2013. "Joint Channel and ICI Compensation in OFDM System" "Evaluation of Digital RDA system for high-speed Tracking performance" "New Chaos Map for CDSK Based Chaotic Communication System" “Design and Performance Evaluation of Simplified Turbo Equalizer" "Neural Network Target Classification for Concealed Weapon Radar Detection"
(73) DSP 2013, 18th INTERNATIONAL CONFERENCE ON DIGITAL SIGNAL PROCESSING, Nomikos Conference Centre, Santorini, Greece, 1-3 July 2013. "Neural Network Target Classification for Concealed Weapon Radar Detection"
(74) 2013 The Second International Conference on Advances in Vehicular Systems, Technologies and Applications (VEHICULAR 2013), pp.12-17, Nice, France, July 21-26, 2013. "Automatic Estimation of Moving Targets By MUSIC Algorithm Considering Doppler Effect"
(75) The 34th Progress In Electromagnetics Research Symposium (PIERS 2013 ), Stockholm, Sweden, Aug. 12-15, 2013. "Automatic Tracking of Bandpass Sampling OFDM Signal in Mobile Environment"
(76) The 10th IEEE VTS Asia Pacific Wireless Communications Symposium (APWCS 2013), Seoul National University, Seoul, Korea, 22-23 August 2013. "ISI Suppression using Digital Retrodirective Beamforming Technique"
(77) Proceeding of IEEE 2013 International Symposium on Communications, Information Technologies (ISCIT2013), pp. 72 - 75 , Koh Samui, Thailand, Sep. 4 - 6, 2013. "System Design of Digital Retrodirective Array Antenna for the Fast Tracking Performance" "Retrodirective Antenna System Combined with Turbo Equalizer for Interference Cancellation"
(78) International Conference on ICT Convergence (ICTC 2013), Jeju, Korea, pp.622-625, October 14-16, 2013. "Separation of Coherent Signals Using A Novel MUSIC Algorithm in Multipath Environments" "Simultaneous Single-band Duplex System using Self-Interference Cancellation" "A New Receiver Design of CDSK-Based Chaos Communication System"
(79) 2013 Military Communications Conference, San Diego Convention Center, November, 18-20, 2013. "High Security Wireless CDSK-based Chaos Communication with New Chaos Map"
(80) 2014 28th of the International Conference on Information Networking (ICOIN 2014), Phuchet, Thailand, Feb. 10-12, 2014. "Analysis and Suppression of Phase Noise and IQ Imbalance for Dual-band MIMO-OFDM" "A Novel Reactance Domain MUSIC Algorithm for Direction of Arrival Estimation Using 13-element ESPAR Antennas" "Beamspace MIMO System with Different Elements Distances in ESPAR Array Antenna"
(81) The 16th International Conference on Advanced Communication Technology (ICACT 2014), Phoenix Park, PyeongChang, Republic of Korea, Feb. 16-19, 2014. "Chaos Communication System using MIMO Technique" "Diversity Method in the Chaos CDSK Communication System" "Path Loss Model Considering Doppler Shift for High Speed Railroad Communication"
(82) 2014 International Conference on Signal Processing and Integrated Networks (SPIN-2014) Amity University, Noida, Delhi, India, Feb. 20-21, 2014. "MIMO Receiver System Using Single RF Front-End"
Professor Ryu designed and developed the world fastest switching speed of digital PLL frequency synthesizer Feb. 2001. (a) Conventional PLL (b) proposed DH-PLL Fig. Comparison of
switching Speed. The Korean military satellite system was developed from
1997 to 2006. The Satellite was launched on 22nd August in Professor Ryu
was deeply engaged in R/D of this Korean military satellite system for 8 years and designed some parts of the
satellite communication system.
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