Inventor · Seoul, KR

Young-Chai Ko

25Patents
4h-index
41Co-inventors
63Inventor score

Filing activity: Jan 29, 2003 → Dec 9, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US8583055B2 Beam forming method and multiple antenna system using the same Electricity 37 Active
US7046963B2 Method and apparatus of signal estimation over generalized fading channel Electricity 16 Expired
US7930620B2 Method for updating check node in low density parity check decoder Electricity 8 Active
US8169919B2 Terminal device and relay node selection method of terminal device Electricity 5 Active
US7292652B2 Symbol detecting with large frequency error Electricity 4 Expired
US7965234B2 Beamforming apparatus and method for multi-antenna system Electricity 3 Active
US8503565B2 Multi-antenna communication method and system thereof Electricity 3 Active
US8279960B2 Multiple-input multiple-output communication method and multiple-input multiple-output communication system of enabling the method Electricity 2 Active
US8374542B2 Data transmission system for forwarding data using a plurality of antennas Electricity 2 Active
US7643574B2 Transmitting apparatus and method in transmit diversity system Electricity 2 Active
US8254830B2 Data transmission system for forwarding data using a plurality of antennas Electricity 2 Active
US7310365B2 Group decision rule in code tracking using a delay lock loop (DLL) Electricity 1 Expired
US9100971B2 Method and apparatus for transmitting and receiving signals in multi-cellular network Electricity 1 Active
US9270501B2 Method for removing signal interference based on multiple input multiple output Electricity 1 Active
US8599980B2 Beamforming apparatus and method in multi-antenna system Electricity 1 Active
US10182356B2 Method and apparatus for selecting beam in wireless communication system supporting beamforming scheme Electricity 1 Active
US8712341B2 Method and apparatus for transmitting and receiving a signal in a communication system Electricity 1 Active
US10236948B2 MIMO systems with independent oscillators and phase noise mitigation method thereof Electricity 0 Active
US11832314B2 Deep reinforcement learning-based random access method for low earth orbit satellite network and terminal for the operation Electricity 0 Active
US12149282B2 Apparatus based on wireless optical communication Electricity 0 Active
US8675750B2 Apparatus and method for reducing peak to average power ratio through recombination of orthogonal frequency division multiplexing symbol Electricity 0 Active
US10111234B2 Frequency assignment method and transmission apparatus therefor Electricity 0 Active
US8897765B2 Method and appratus for controlling signal transmission Electricity 0 Active
US8401133B2 Multi-antenna system using adaptive beamforming Electricity 0 Active
US12335023B2 Time synchronization method and apparatus for low-orbit satellite cluster Electricity 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.