Inventor · Sunnyvale, CA, US

Qinghua Li

556Patents
22h-index
266Co-inventors
93Inventor score

Filing activity: Jul 25, 2000 → May 30, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US9710214B2 Room sensor applications and techniques Physics 237 Active
US8041362B2 Downlink resource allocation and mapping Electricity 99 Active
US7751368B2 Providing CQI feedback to a transmitter station in a closed-loop MIMO system Electricity 78 Active
US7804800B2 Efficient training schemes for MIMO based wireless networks Electricity 69 Active
US7719993B2 Downlink transmit beamforming Electricity 67 Active
US7616704B2 Broadband multicarrier transmitter with subchannel frequency diversity for transmitting a plurality of spatial streams Electricity 44 Active
US7778599B2 Aggregated channel feedback Electricity 44 Active
US7580505B2 Method for inspecting object using multi-energy radiations and apparatus thereof Physics 44 Active
US7539253B2 Interpolation in channel state feedback Electricity 41 Active
US7039412B2 Method and apparatus for transmitting wireless signals on multiple frequency channels in a frequency agile network Electricity 39 Expired
US7362822B2 Recursive reduction of channel state feedback Electricity 36 Active
US7778826B2 Beamforming codebook generation system and associated methods Electricity 35 Active
US7895044B2 Beamforming codebook generation system and associated methods Electricity 34 Active
US7818013B2 Downlink channel parameters determination for a multiple-input-multiple-output (MIMO) system Electricity 33 Active
US7366245B2 Calibration in MIMO systems Electricity 33 Active
US7595768B2 Switching schemes for multiple antennas Electricity 32 Expired
US7002518B2 Low profile sector antenna configuration Electricity 32 Expired
US9225478B2 Supporting measurments and feedback for 3D MIMO with data transmission optimization Emerging Cross-Sectional Technologies 27 Active
US9513861B2 Systems and methods for discovering wireless display devices using inaudible audio signals Physics 27 Active
US9872233B2 Devices and method for retrieving and utilizing neighboring WLAN information for LTE LAA operation Electricity 24 Active
US8301155B2 Base station and method for resource allocation using localized and distributed resource blocks Electricity 24 Active
US7961802B2 Interpolation in channel state feedback Electricity 23 Active
US7236748B2 Closed loop feedback in MIMO systems Electricity 22 Expired
US8644289B2 Enhanced node B and method for precoding with reduced quantization error Emerging Cross-Sectional Technologies 21 Active
US7602745B2 Multiple input, multiple output wireless communication system, associated methods and data structures Electricity 20 Active

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