Algorithm and Standards Team - R&DCellular Products Group (CPG)• Development of 3GPP LTE radio link simulator (RLS) with MATLAB --- Efficient equalization techniques for turbo-coded MIMO-OFDM --- Effective techniques to overcome the effect of transmit EVM --- Symbol timing synchronization algorithms --- Frequency offset estimation and correction algorithms• Design, implementation, and test of micro-code (i.e., DSP coding) for 3GPP LTE… Show more Algorithm and Standards Team - R&DCellular Products Group (CPG)• Development of 3GPP LTE radio link simulator (RLS) with MATLAB --- Efficient equalization techniques for turbo-coded MIMO-OFDM --- Effective techniques to overcome the effect of transmit EVM --- Symbol timing synchronization algorithms --- Frequency offset estimation and correction algorithms• Design, implementation, and test of micro-code (i.e., DSP coding) for 3GPP LTE platform --- Signal detection algorithms for some PHY channels --- Fine symbol timing recovery algorithm• Several contributions for 3GPP LTE standard meeting --- Signal detection for some PHY channels (i.e., PCFICH, PHICH, etc.) --- Performance evaluations for the decoding algorithms • Submission of several innovation disclosures (i.e., patents) related with novel transmission and reception techniques for various MIMO-OFDM systems (i.e., 3GPP LTE, LTE-Advanced, mobile WiMAX, etc.) Show less

Wireless & Mobile Systems Group (WMSG)• Investigated the performance of various detection methods for Turbo-coded MIMO-OFDM.• Developed efficient (i.e., low-complexity but suboptimal) receiver techniques for 3GPP LTE system

• Guided graduate students to research and develop their projects for IEEE 802.16a modeling, next-generation wireless mobile air interface, and 4th-generation mobile communication systems, etc.• Results: 3 journal papers and 7 conference papers.

• Invited by Advanced Radio Technology Lab (Prof. Joonhyuk Kang)

Samsung Advanced Institute of Technology (SAIT)4th-generation Communications’ PHYsical Layer Lab of i-networkingTeam• Studied various MIMO systems employing STBCs and V-BLAST over fading channels.• Investigated MIMO-OFDM system (e.g., STBC-OFDM and V-BLAST-OFDM).

Mobile Telecommunication Engineering Team• Studied and investigated 2.5th & 3rd-generation wireless technologies (e.g., 3GPP-HSDPA, CDMA2000 1x EV-DO, WCDMA, etc.)• Result: Analytical report “Analysis and Forecast for the Global Wireless Telecommunication 2.5G & 3G Technologies.”