Patents

"Method for generating differential codebook of same gain in multiple-input and multiple-output antenna system, and thereof recording medium", 10-1221024, 4th Jan. 2013

"Method for generating differential codebook using temporally correlated in multiple input multiple output antenna transmission channels, and thereof recording medium", 10-1221023, 4th Jan. 2013

"Codebook index search method using grouping based chordal distance in codebook based multiple-input and multiple-output antenna system, and thereof recording medium", 10-1221022, 4th Jan. 2013

"Visible light transmitter, visible right receiver, visible light communication system thereof", 10-1105738, 6th Jan. 2012

"Cooperative multi hop relay apparatus and method thereof", 10-1072454, 5th Oct. 2011

"Method for precoding transmitting in a multi antenna system of closed loop scheme and thereof receiver and transmitter", 10-1072453, 5th Oct. 2011

"SC-FDMA system with codebook-based equal gain transmission precoding system", 10-1055685, 3rd Aug. 2011

"Method for searching codebook index in a multi antenna system of closed loop scheme thereof receiver", 10-1042170, 10th Jun. 2011

"Method for estimating frequency of maximum doppler for codebook-based beamforming scheme", 10-1027650, 31th Mar. 2011

"Roaming femto cell service system and method", 10-1001348, 8th Dec. 2010

"A fast index search algorithm for codebook-based beamforming scheme", 10-0958917, 12th May 2010

"SFTC-OFDM telecommunication system and receiver of the same", 10-0897363, 6th May 2009

"Terminal equipped with the USIM card locking apparatus", 10-0836576, 3rd Jun. 2008

"Space-time coded cooperative diversity relaying communication system", 10-0782905, 30th Nov. 2007

"Apparatus for controlling athletic equipment using optical sensor", 2nd Nov. 2007

"Running machine speed control apparatus and method", 10-0733455, 22th Jun. 2007

"M-ary state shift frequency shift keying method for improving the synchronization performance of demodulator, and frequency shift keying system using the same", 10-0663137, 22th Dec. 2006