LexDanaLexDanabeta
Inventor

John W. Ketchum

Inventor
Harvard, MA, US

Overview

133→
Patents
1997–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 133 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication37%
H04BTransmission31%
H04WWireless communication networks25%
H04JMultiplex communication3%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use2%
H01QAntennas, i.e. radio aerials1%
H03MCoding1%
G06FElectric digital data processing1%
C07KPeptides0%
G01SRadio direction-finding0%
PatentTitleYear
10,742,358Method and apparatus for providing an efficient control channel structure in a wireless communication system202010,476,560Spatial spreading in a multi-antenna communication system201910,382,106Pilots for MIMO communication systems201910,128,920Multi-antenna transmission for spatial division multiple access20189,967,005Pilots for MIMO communication systems20189,876,609Method and apparatus for providing an efficient control channel structure in a wireless communication system20189,806,935'Methods and systems for service discovery management in peer-to-peer networks'20179,787,375'Spatial spreading in a multi-antenna communication system'20179,749,185'Methods and systems for exploitation of well-connected nodes in peer-to-peer wireless networks'20179,548,899'Methods and systems for exploitation of well-connected nodes in peer-to-peer wireless networks'20179,548,851'Multi-antenna transmission for spatial division multiple access'20179,473,269'Method and apparatus for providing an efficient control channel structure in a wireless communication system'20169,432,917'Methods and systems for peer-to-peer network discovery using multi-user diversity'20169,312,935'Pilots for MIMO communication systems'20169,240,871'MIMO WLAN system'20169,226,308'Method, apparatus, and system for medium access control'20159,154,274'OFDM communication system with multiple OFDM symbol sizes'20159,048,892'MIMO system with multiple spatial multiplexing modes'20159,031,097'MIMO system with multiple spatial multiplexing modes'20159,013,974'MIMO WLAN system'20158,948,705'Multiple-access hybrid OFDM-CDMA system'20158,934,462'Methods and systems for exploitation of well-connected nodes in peer-to-peer wireless networks'20158,934,329'Transmit diversity processing for a multi-antenna communication system'20158,923,446'Single-burst acquisition for wireless communication system'20148,913,529'MIMO WLAN system'20148,903,016'Spatial spreading in a multi-antenna communication system'20148,873,365'Transmit diversity processing for a multi-antenna communication system'20148,842,657'High speed media access control with legacy system interoperability'20148,824,583'Reduced complexity beam-steered MIMO OFDM system'20148,787,841'Method and system for providing beamforming feedback in wireless communication systems'20148,774,098'Method, apparatus, and system for multiplexing protocol data units'20148,751,576'Methods and systems for service discovery management in peer-to-peer networks'20148,750,151'Channel calibration for a time division duplexed communication system'20148,711,763'Random access for wireless multiple-access communication systems'20148,665,795'Method and system for providing beamforming feedback in wireless communication systems'20148,639,242'Methods and systems for registrations and service announcements in peer-to-peer networks via cellular overlays'20148,619,620'Methods and systems for transmission mode selection in a multi channel communication system'20138,600,297'Method and system for femto cell self-timing and self-locating'20138,582,430'Method and apparatus for wireless LAN (WLAN) data multiplexing'20138,570,988'Channel calibration for a time division duplexed communication system'20138,543,070'Reduced complexity beam-steered MIMO OFDM system'20138,520,498'Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system'20138,488,706'Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion'20138,483,188'MIMO system with multiple spatial multiplexing modes'20138,478,776'Methods and systems for peer-to-peer network discovery using multi-user diversity'20138,478,820'Methods and systems for service discovery management in peer-to-peer networks'20138,477,858'Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion'20138,472,306'Multi-access hybrid OFDM-CDMA system'20138,472,473'Wireless LAN protocol stack'20138,467,466'Reduced complexity detection and decoding for a receiver in a communication system'20138,462,643'MIMO WLAN system'20138,462,817'Method, apparatus, and system for multiplexing protocol data units'20138,462,653'Methods and system for transmission mode selection in a multi channel communication system'20138,427,936'Multiple-access hybrid OFDM-CDMA system'20138,406,200'Resource allocation for MIMO-OFDM communication systems'20138,355,313'MIMO system with multiple spatial multiplexing modes'20138,325,844'Data transmission with spatial spreading in a MIMO communication system'20128,320,301'MIMO WLAN system'20128,290,089'Derivation and feedback of transmit steering matrix'20128,284,752'Method, apparatus, and system for medium access control'20128,218,609'Closed-loop rate control for a multi-channel communication system'20128,208,364'MIMO system with multiple spatial multiplexing modes'20128,203,978'Multi-mode terminal in a wireless MIMO system'20128,204,149'Spatial spreading in a multi-antenna communication system'20128,199,842'Time-domain transmit and receive processing with channel EIGEN-mode decomposition for MIMO systems'20128,194,770'Coded MIMO systems with selective channel inversion applied per eigenmode'20128,169,944'Random access for wireless multiple-access communication systems'20128,169,889'Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system'20128,160,183'Receiver spatial processing for eigenmode transmission in a MIMO system'20128,134,976'Channel calibration for a time division duplexed communication system'20128,094,625'Resource allocation for MIMO-OFDM communication systems'20128,078,211'Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems'20118,040,965'Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion'20117,990,841'Diversity transmission modes for MIMO OFDM communication systems'20117,986,742'Pilots for MIMO communication system'20117,953,047'Parser for multiple data streams in a communication system'20117,949,060'Method and apparatus for utilizing channel state information in a wireless communication system'20117,907,689'Broadcast transmission with spatial spreading in a multi-antenna communication system'20117,899,131'Broadcast transmission with spatial spreading in a multi-antenna communication system'20117,894,538'Frequency-independent spatial processing for wideband MISO and MIMO systems'20117,894,548'Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system'20117,895,254'Eigenvalue decomposition and singular value decomposition of matrices using Jacobi rotation'20117,881,360'Method and system for increased bandwidth efficiency in multiple input—multiple output channels'20117,852,972'Single-burst acquistion for wireless communication system'20107,764,594'Multiple-access hybrid OFDM-CDMA system'20107,764,754'Data transmission with spatial spreading in a MIMO communication system'20107,742,546'Receiver spatial processing for eigenmode transmission in a MIMO system'20107,711,762'Efficient computation for eigenvalue decomposition and singular value decomposition of matrices'20107,702,986'Rate-compatible LDPC codes'20107,688,899'Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion'20107,653,142'Channel estimation and spatial processing for TDD MIMO systems'20107,649,954'Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion'20107,613,248'Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems'20097,590,182'Method and apparatus for utilizing channel state information in a wireless communication system'20097,551,698'Derivation of eigenvectors for spatial processing in MIMO communication systems'20097,502,420'Method and apparatus for determining power allocation in a MIMO communication system'20097,430,245'Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems'20087,411,929'Method and apparatus for utilizing channel state information in a wireless communication system'20087,372,896'Iterative detection and decoding for a MIMO-OFDM system'20087,346,115'Iterative eigenvector computation for a MIMO communication system'20087,336,746'Data transmission with spatial spreading in a MIMO communication system'20087,324,429'Multi-mode terminal in a wireless MIMO system'20087,302,009'Broadcast transmission with spatial spreading in a multi-antenna communication system'20077,298,805'Multi-antenna transmission for spatial division multiple access'20077,280,625'Derivation of eigenvectors for spatial processing in MIMO communication systems'20077,221,956'Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systems'20077,206,354'Calibration of downlink and uplink channel responses in a wireless MIMO communication system'20077,197,084'Precoding for a multipath channel in a MIMO system'20077,194,042'Data transmission with spatial spreading in a mimo communication system'20077,194,040'Beam-steering and beam-forming for wideband MIMO/MISO systems'20077,164,649'Adaptive rate control for OFDM communication system'20077,154,936'Iterative detection and decoding for a MIMO-OFDM system'20067,151,809'Channel estimation and spatial processing for TDD MIMO systems'20067,116,725'Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems'20067,095,709'Diversity transmission modes for MIMO OFDM communication systems'20067,076,263'Power control for partial channel-state information (CSI) multiple-input, multiple-output (MIMO) systems'20067,072,413'Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion'20067,065,144'Frequency-independent spatial processing for wideband MISO and MIMO systems'20067,054,378'Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information'20067,020,110'Resource allocation for MIMO-OFDM communication systems'20067,020,482'Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems'20067,006,848'Method and apparatus for utilizing channel state information in a wireless communication system'20067,002,900'Transmit diversity processing for a multi-antenna communication system'20066,956,907'Method and apparatus for determining power allocation in a MIMO communication system'20056,940,917'Beam-steering and beam-forming for wideband MIMO/MISO systems'20056,785,341'Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information'20046,771,706'Method and apparatus for utilizing channel state information in a wireless communication system'20046,760,388'Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems'20046,751,187'Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission'20046,731,668'Method and system for increased bandwidth efficiency in multiple inputmultiple output channels'20046,542,488'Methods and apparatuses for fast power control of signals transmitted on a multiple access channel'20036,252,865'Methods and apparatuses for fast power control of signals transmitted on a multiple access channel'20015,621,723'Power control in a CDMA network'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2003Based in Watertown, MA, US· patent location history
2001–2020Patents assigned to QUALCOMM INC (132)· patent assignee history
2004–2019Based in Harvard, MA, US· patent location history
2011–2017Patents assigned to KETCHUM JOHN W (54)· patent assignee history
2012–2017Patents assigned to HOWARD STEVEN J (34)· patent assignee history
2012–2017Patents assigned to WALLACE MARK S (33)· patent assignee history
2012–2017Patents assigned to WALTON J RODNEY (29)· patent assignee history
2012–2015Based in San Diego, CA, US· patent location history
2014–2015Based in Boxborough, MA, US· patent location history
2018–2020Based in Harwich, MA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
QUALCOMM INC1322001–2020
KETCHUM JOHN Wself542011–2017
HOWARD STEVEN J342012–2017
WALLACE MARK S332012–2017
WALTON J RODNEY292012–2017
Locations
LocationPatentsSpan
Harvard, Massachusetts, US1172004–2019
San Diego, California, US72012–2015
Harwich, Massachusetts, US32018–2020
Boxborough, Massachusetts, US32014–2015
Watertown, Massachusetts, US31997–2003