Time stamping method using additional TPU for improvement of positioning precision. - Junseong Kim; Jong-Kyun Hong; Dong-Jin Lee; Sang-Sun Lee (ICTC, 2012)

Efficient construction of database by indexing and correcting algorithms for personal computed indoor positioning system. - Jong-In Jung; Hyuk-Won Cho; Jin Cha; Jong-Kyun Hong; Sang-Sun Lee (ICCE, 2013)