An investigation of satellite radio access technology for beyond IMT-2000 systems. - Kunseok Kang; Sunheui Ryoo; Byoung-Gi Kim; Sooyoung Kim 001; Do-Seob Ahn (J. Commun. Networks, 2005)

Layered Coding with Block Turbo Code for Broadcasting and Multicasting Services. - Sunheui Ryoo; Sooyoung Kim; Do-Seob Ahn (VTC Fall, 2006)

Evaluation of rate compatible block turbo codes for multimedia application in satellite communication network. - Sooyoung Kim 001; Sunheui Ryoo; Do-Seob Ahn (Int. J. Satell. Commun. Netw., 2006)

Energy Saving MAC for MIMO Systems. - Sunheui Ryoo; Saewoong Bahk (ICC, 2009)

Spectrum allocation with beamforming antenna in heterogeneous overlaying networks. - Sunheui Ryoo; Changhee Joo; Saewoong Bahk (PIMRC, 2010)

A decentralized spectrum allocation and partitioning scheme for a two-tier macro-femtocell network with downlink beamforming. - Sunheui Ryoo; Changhee Joo; Saewoong Bahk (EURASIP J. Wirel. Commun. Netw., 2012)

Location-based spectrum allocation and partitioning scheme for cross-tier interference mitigation in macro-femtocell networks. - Sunheui Ryoo; Changhee Joo; Saewoong Bahk (Comput. Networks, 2013)

Mobility enhancement of dense small-cell network. - Sungjin Lee; Jungsoo Jung; Jungmin Moon; Anshuman Nigam; Sunheui Ryoo (CCNC, 2015)

On the trade-off between handover failure and small cell utilization in heterogeneous networks. - Jungmin Moon; Jungsoo Jung; Sungjin Lee; Anshuman Nigam; Sunheui Ryoo (ICC Workshops, 2015)

Battery life extension for WLAN-LTE aggregation. - Sunheui Ryoo; Jungsoo Jung; Jungmin Moon; Byoung Hoon Jung; Seoung-Hoon Park (WCNC, 2016)

Energy efficiency enhancement with RRC connection control for 5G new RAT. - Sunheui Ryoo; Jungsoo Jung; RaYeon Ahn (WCNC, 2018)