Simultaneous single-band duplex system using self-interference cancellation. - Changyoung An; Heung-Gyoon Ryu (ICTC, 2013)

Design and performance evaluation of SSD (simultaneous single band duplex) system using RF cancellation and digital cancellation. - Changyoung An; Heung-Gyoon Ryu (ICTC, 2014)

General dimension of BS-MIMO by extension of parasitic elements in ESPAR antenna. - Changyoung An; Sung Wook Yoon; Heung-Gyoon Ryu (CCNC, 2015)

A reactance domain fourth-order MUSIC algorithm using 13-element ESPAR antenna. - Bong-Jun Kim; Changyoung An; Heung-Gyoon Ryu (CCNC, 2015)

Robust Digital Retrodirective Beamforming Technique for Multipath Channel Environment. - Changyoung An; Kukhan Jang; Heung-Gyoon Ryu; Jin-Kyu Choi; Hanbyeog Cho (FNC/MobiSPC, 2015)

Analysis of boss map according to delay time in CDSK system and proposed chaos system. - Jun-Hyun Lee; Changyoung An; Bong-Jun Kim; Heung-Gyoon Ryu (ICCE, 2015)

A Novel CFO Suppression Algorithm for OFDMA Uplink Communication System. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2015)

Two Separate Antennas Simultaneous Single Band Duplex (SSD) System Using Turbo Equalizer. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2015)

Design and Performance Analysis of Beam-Space MIMO System for Multi-carrier Transmission. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2015)

Single RF based MIMO system using load-modulation. - Changyoung An; Heung-Gyoon Ryu; Seung Hwan Lee (CCNC, 2016)

Load modulation based MIMO communication for the low complexity and low power consumption. - Changyoung An; Heung-Gyoon Ryu; Seung Hwan Lee; Masahiro Umehira; Tokumi Yokohira (ICCE, 2016)

Design of W-OFDM and nonlinear performance comparison for 5G waveform. - Changyoung An; Byeongjae Kim; Heung-Gyoon Ryu (ICTC, 2016)

Design and Beamforming Performance of the Compact ESPAR Antenna for the Beam Space MIMO System. - Heung-Gyoon Ryu; Changyoung An; Seung Hwan Lee (Wirel. Pers. Commun., 2016)

NW-OFDM using cyclic postfix and windowing for the eMBB waveform of the 5G/B5G mobile system. - Changyoung An; Heung-Gyoon Ryu; Yingshan Li; Mohammad Reza Asharif (ICTC, 2017)

Turbo equalizer design and performance evaluation of 8PSK-TCM based satellite receiver system. - Changyoung An; Heung-Gyoon Ryu; Sang Burm Ryu; Sang-Gyu Lee (ICTC, 2017)

WR-OFDM system and OOB spectrum comparison. - Changyoung An; Byeongjae Kim; Heung-Gyoon Ryu (ICUFN, 2017)

Double Balanced Feed Network for the Self-Interference Cancellation in Full Duplex Communication System. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2017)

Ripple Window OFDM (RW-OFDM) System for Improvement of Spectrum Resource Utilization. - Changyoung An; Dayoung Kim; Heung-Gyoon Ryu (ICTC, 2018)

Spectrum Efficient and Power Efficient Communication System for Satellite Applications. - Changyoung An; Heung-Gyoon Ryu (IMCOM, 2018)

CPW-OFDM(Cyclic Postfix Windowing OFDM) for the B5G (Beyond 5th Generation) Waveform. - Changyoung An; Heung-Gyoon Ryu (LATINCOM, 2018)

Design and Performance Evaluation of Dual Mode OFDM-DIM and OFDM-CDIM Systems. - Changyoung An; Dayoung Kim; Heung-Gyoon Ryu (WPMC, 2018)

Design and Performance Comparison of W-OFDM Under the Nonlinear HPA Environment. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2018)

Design and Performance Evaluation of Spectral Efficient Orthogonal Time Frequency Space System. - Changyoung An; Heung-Gyoon Ryu (5G World Forum, 2019)

Window Processing of SSB CP-OFDM System for the OOB Spectrum Reduction. - Kyeongsoo Jang; Dayoung Kim; Changyoung An; Heung-Gyoon Ryu (ICEIC, 2019)

Effective Self-Interference Cancellation for IBFD (In-Band Full Duplex) Communication System. - Myunggi Kim; Changyoung An; Heung-Gyoon Ryu (ICUFN, 2019)

4D-8PSK-TCM System for the Specrum and Power Efficient Satellite Communication. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2019)

High Throughput Mobile Communication Based on OTFS System with the Delay-Doppler Compensation. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2019)

Compensation System Design and Comparison of Very High Doppler Frequency Effect. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2019)

A Multi-mode OFDM System with Coded Direct Index Modulation (MM-OFDM-CDIM). - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2019)

Compensation Systems and Performance Comparison of the Very High Doppler Frequency. - Changyoung An; Heung-Gyoon Ryu (COMNET, 2020)

Multi-Mode OFDM Communication System Using the Multiple Constellations. - Changyoung An; Heung-Gyoon Ryu (ICOIN, 2020)

Receiver Design of the WR-OFDM System Robust to Long Delay Multipath. - Changyoung An; Hyeong Min Kwon; Heung-Gyoon Ryu (ICTC, 2020)

Dimension Expansion of OFDM System for the Spectral Efficiency Improvement. - Changyoung An; Heung-Gyoon Ryu (WCNC Workshops, 2020)

Spectrum Efficient Multidimensional OFDM-CDIM Communication System. - Changyoung An; Heung-Gyoon Ryu (WPMC, 2020)

Design and Performance Evaluation of Multidimensional OFDM System. - Changyoung An; Heung-Gyoon Ryu (Wirel. Pers. Commun., 2020)

Lowest-In First-Service System for the Efficient MPT (Microwave Power Transfer) to Multiple Receivers. - Changyoung An; Hyeong Min Kwon; Heung-Gyoon Ryu (ICOIN, 2021)

Multiple-input multiple-output system design of multidimensional orthogonal frequency division multiplexing system with coded direct index modulation. - Changyoung An; Heung-Gyoon Ryu (Trans. Emerg. Telecommun. Technol., 2021)

Ambient Backscatter Communication System Utilizing Multicarrier Signal. - Changyoung An; Hyeong Min Kwon; Heung-Gyoon Ryu (CCNC, 2022)

Efficient Wireless MPT(Microwave Power Transfer) System to the Multiple IoT Devices. - Changyoung An; Hyeong Min Kwon; Heung-Gyoon Ryu (ICEIC, 2022)

Beamforming Design of the Wireless Power Transfer System into Multiple IoT Sensors. - Changyoung An; Hyeong Min Kwon; Heung-Gyoon Ryu (ICACT, 2022)

Design of Middle Range Microwave Power Transfer (MPT) System for the Mobile Power Receiver. - Changyoung An; Heung-Gyoon Ryu (ICUFN, 2022)