Inventor · disambiguated record
John W. Ketchum
Also filed as: KETCHUM JOHN · KETCHUM JOHN W · KETCHUM JOHN WENDELL
134 granted patents·12 pending applications·8,094 citations·filing 1995–2019
99Inventor score
Top patents by PatentIndex Score
146 records- 0199US8483188B2MIMO system with multiple spatial multiplexing modesWALTON J RODNEY·Filed 2008·Granted Jul 9, 2013·96 cites·9 claims
- 0299US7072413B2Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversionQUALCOMM INC·Filed 2001·Granted Jul 4, 2006·332 cites·53 claims
- 0399US7006848B2Method and apparatus for utilizing channel state information in a wireless communication systemQUALCOMM INC·Filed 2001·Granted Feb 28, 2006·245 cites·52 claims
- 0499US7002900B2Transmit diversity processing for a multi-antenna communication systemQUALCOMM INC·Filed 2003·Granted Feb 21, 2006·285 cites·52 claims
- 0599US6785341B2Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state informationQUALCOMM INC·Filed 2001·Granted Aug 31, 2004·493 cites·57 claims
- 0699US6771706B2Method and apparatus for utilizing channel state information in a wireless communication systemQUALCOMM INC·Filed 2001·Granted Aug 3, 2004·425 cites·32 claims
- 0799US6760388B2Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systemsQUALCOMM INC·Filed 2001·Granted Jul 6, 2004·306 cites·43 claims
- 0899US6751187B2Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmissionQUALCOMM INC·Filed 2001·Granted Jun 15, 2004·419 cites·33 claims
- 0998US8462643B2MIMO WLAN systemWALTON J RODNEY·Filed 2008·Granted Jun 11, 2013·93 cites·23 claims
- 1098US8325844B2Data transmission with spatial spreading in a MIMO communication systemWALTON JAY RODNEY·Filed 2010·Granted Dec 4, 2012·77 cites·13 claims
- 1198US7702986B2Rate-compatible LDPC codesQUALCOMM INC·Filed 2002·Granted Apr 20, 2010·113 cites·8 claims
- 1298US7653142B2Channel estimation and spatial processing for TDD MIMO systemsQUALCOMM INC·Filed 2006·Granted Jan 26, 2010·73 cites·40 claims
- 1398US7502420B2Method and apparatus for determining power allocation in a MIMO communication systemQUALCOMM INC·Filed 2005·Granted Mar 10, 2009·73 cites·36 claims
- 1498US7324429B2Multi-mode terminal in a wireless MIMO systemQUALCOMM INC·Filed 2003·Granted Jan 29, 2008·129 cites·32 claims
- 1598US7302009B2Broadcast transmission with spatial spreading in a multi-antenna communication systemQUALCOMM INC·Filed 2004·Granted Nov 27, 2007·141 cites·22 claims
- 1698US7298805B2Multi-antenna transmission for spatial division multiple accessQUALCOMM INC·Filed 2003·Granted Nov 20, 2007·118 cites·15 claims
- 1798US7164649B2Adaptive rate control for OFDM communication systemQUALCOMM INC·Filed 2001·Granted Jan 16, 2007·260 cites·39 claims
- 1898US7154936B2Iterative detection and decoding for a MIMO-OFDM systemQUALCOMM INC·Filed 2001·Granted Dec 26, 2006·371 cites·42 claims
- 1998US7095709B2Diversity transmission modes for MIMO OFDM communication systemsQUALCOMM INC·Filed 2002·Granted Aug 22, 2006·238 cites·3 claims
- 2098US7020110B2Resource allocation for MIMO-OFDM communication systemsQUALCOMM INC·Filed 2002·Granted Mar 28, 2006·500 cites·65 claims
- 2197US8570988B2Channel calibration for a time division duplexed communication systemWALLACE MARK S·Filed 2005·Granted Oct 29, 2013·62 cites·33 claims
- 2297US8203978B2Multi-mode terminal in a wireless MIMO systemWALTON J RODNEY·Filed 2007·Granted Jun 19, 2012·65 cites·40 claims
- 2397US7986742B2Pilots for MIMO communication systemQUALCOMM INC·Filed 2003·Granted Jul 26, 2011·165 cites·3 claims
- 2497US7336746B2Data transmission with spatial spreading in a MIMO communication systemQUALCOMM INC·Filed 2007·Granted Feb 26, 2008·36 cites·26 claims
- 2597US7197084B2Precoding for a multipath channel in a MIMO systemQUALCOMM INC·Filed 2002·Granted Mar 27, 2007·252 cites·20 claims
- 2697US7194042B2Data transmission with spatial spreading in a mimo communication systemQUALCOMM INC·Filed 2004·Granted Mar 20, 2007·74 cites·28 claims
- 2797US7020482B2Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systemsQUALCOMM INC·Filed 2002·Granted Mar 28, 2006·120 cites·41 claims
- 2897US6940917B2Beam-steering and beam-forming for wideband MIMO/MISO systemsQUALCOMM INC·Filed 2002·Granted Sep 6, 2005·188 cites·27 claims
- 2996US9013974B2MIMO WLAN systemQUALCOMM INC·Filed 2014·Granted Apr 21, 2015·23 cites·20 claims
- 3096US8320301B2MIMO WLAN systemWALTON J RODNEY·Filed 2003·Granted Nov 27, 2012·129 cites·30 claims
- 3196US7949060B2Method and apparatus for utilizing channel state information in a wireless communication systemQUALCOMM INC·Filed 2009·Granted May 24, 2011·40 cites·18 claims
- 3296US7221956B2Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systemsQUALCOMM INC·Filed 2005·Granted May 22, 2007·42 cites·14 claims
- 3396US7206354B2Calibration of downlink and uplink channel responses in a wireless MIMO communication systemQUALCOMM INC·Filed 2004·Granted Apr 17, 2007·95 cites·43 claims
- 3496US7151809B2Channel estimation and spatial processing for TDD MIMO systemsQUALCOMM INC·Filed 2003·Granted Dec 19, 2006·113 cites·24 claims
- 3596US7065144B2Frequency-independent spatial processing for wideband MISO and MIMO systemsQUALCOMM INC·Filed 2003·Granted Jun 20, 2006·108 cites·58 claims
- 3696US6731668B2Method and system for increased bandwidth efficiency in multiple input—multiple output channelsQUALCOMM INC·Filed 2001·Granted May 4, 2004·89 cites·32 claims
- 3795US8355313B2MIMO system with multiple spatial multiplexing modesQUALCOMM INC·Filed 2008·Granted Jan 15, 2013·27 cites·24 claims
- 3895US7764594B2Multiple-access hybrid OFDM-CDMA systemQUALCOMM INC·Filed 2006·Granted Jul 27, 2010·30 cites·41 claims
- 3995US7076263B2Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systemsQUALCOMM INC·Filed 2002·Granted Jul 11, 2006·75 cites·27 claims
- 4095US5621723APower control in a CDMA networkGTE LABORATORIES INC·Filed 1995·Granted Apr 15, 1997·253 cites·1 claims
- 4194US9226308B2Method, apparatus, and system for medium access controlQUALCOMM INC·Filed 2012·Granted Dec 29, 2015·16 cites·22 claims
- 4294US7711762B2Efficient computation for eigenvalue decomposition and singular value decomposition of matricesQUALCOMM INC·Filed 2005·Granted May 4, 2010·28 cites·46 claims
- 4393US9240871B2MIMO WLAN systemWALTON J RODNEY·Filed 2008·Granted Jan 19, 2016·19 cites·11 claims
- 4493US9048892B2MIMO system with multiple spatial multiplexing modesQUALCOMM INC·Filed 2013·Granted Jun 2, 2015·10 cites·20 claims
- 4593US8665795B2Method and system for providing beamforming feedback in wireless communication systemsKETCHUM JOHN W·Filed 2011·Granted Mar 4, 2014·15 cites·40 claims
- 4693US7894538B2Frequency-independent spatial processing for wideband MISO and MIMO systemsQUALCOMM INC·Filed 2006·Granted Feb 22, 2011·23 cites·80 claims
- 4793US7372896B2Iterative detection and decoding for a MIMO-OFDM systemQUALCOMM INC·Filed 2006·Granted May 13, 2008·25 cites·22 claims
- 4892US9876609B2Method and apparatus for providing an efficient control channel structure in a wireless communication systemQUALCOMM INC·Filed 2016·Granted Jan 23, 2018·7 cites·17 claims
- 4992US8520498B2Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication systemWALTON JAY RODNEY·Filed 2012·Granted Aug 27, 2013·12 cites·28 claims
- 5092US7894548B2Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication systemQUALCOMM INC·Filed 2005·Granted Feb 22, 2011·21 cites·39 claims
Showing the top 50 of 146 patent records by PatentIndex Score.
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