Patent Id | Score | Title | Patent Type | Publication Date | Priority Date | Family Id | Search Efficiency | Original Assignee | Current Assignee |
---|---|---|---|---|---|---|---|---|---|
US6999406B2 | 0.965 | Reception synchronization apparatus and demodulating apparatus using the same | GRANT | 2006-02-14 | 2000-12-08 | 18843762 | Great | Sony Corp | Sony Corp |
EP0901260A2 | 0.922 | Frame and symbol synchronisation in multicarrier receivers | GRANT | 1999-03-10 | 1997-05-12 | 14799318 | Great | Sony Corp | Sony Corp |
EP0715481B1 | 0.886 | BASE STATION MOBILE STATION AND RADIO COMMUNICATION SYSTEM | GRANT | 2003-02-26 | 1994-06-20 | 15199060 | Great | Sony Corp | Sony Corp |
EP0841761A2 | 0.871 | Communication method base station and terminal apparatus using time slots | GRANT | 1998-05-13 | 1996-11-08 | 17840101 | Great | Sony Corp | Sony Corp |
EP0851694A2 | 0.849 | Communication method base station and terminal apparatus | GRANT | 1998-07-01 | 1996-12-26 | 18399471 | Great | Sony Corp | Sony Corp |
EP0734132A2 | 0.847 | Signal structure for multicarrier modulation which reduces the overhead requirement | GRANT | 1996-09-25 | 1995-03-23 | 13241746 | Great | Toshiba Corp | Toshiba Corp |
EP0841762A2 | 0.828 | Communication method in a multi-carrier format | GRANT | 1998-05-13 | 1996-11-08 | 17840115 | Great | Sony Corp | Sony Corp |
EP0851620A2 | 0.827 | Communication method transmitting apparatus and receiving apparatus for simultaneously using first and second communication resources by variable allocation | GRANT | 1998-07-01 | 1996-12-26 | 18399485 | Great | Sony Corp | Sony Corp |
EP1130840A2 | 0.810 | Spread-spectrum multicarrier modulation for cellular communication | GRANT | 2001-09-05 | 2000-02-29 | 18575335 | Great | Toshiba Corp | Toshiba Corp |
EP0741465B1 | 0.801 | Mobile radio communication system with transmitter diversity | GRANT | 2005-09-21 | 1995-04-28 | 14995911 | Great | NEC Corp | NEC Corp |
EP0825742A2 | 0.800 | Method and apparatus for receiving and synchronising a multicarrier signal | GRANT | 1998-02-25 | 1996-08-23 | 16790136 | Great | Sony Corp | Sony Corp |
EP0762701A2 | 0.793 | MCM system with a plurality of data streams each with its own transmission parameters | GRANT | 1997-03-12 | 1995-09-06 | 26409962 | Great | Advanced Digital Television Broadcasting Laboratory | Advanced Digital Television Broadcasting Laboratory |
EP2259528B1 | 0.788 | Apparatus for the transmission and reception of data and method for digital radio communication | GRANT | 2018-12-26 | 1999-07-28 | 16636662 | Great | Panasonic Intellectual Property Corp of America | Panasonic Intellectual Property Corp of America |
US5889767A | 0.787 | Time-division multidirectional multiplex communication system capable of using message area in radio burst signals divided into a plurality of areas | GRANT | 1999-03-30 | 1994-08-29 | 16482989 | Great | NEC Corp | NEC Corp |
EP1041765A2 | 0.786 | Multiplexing methods for multicarrier signals in a meshed network | GRANT | 2000-10-04 | 1999-03-30 | 7902886 | Great | IAD Gesellschaft fuer Informatik Automatisierung und Datenverarbeitung mbH | IAD Gesellschaft fuer Informatik Automatisierung und Datenverarbeitung mbH |
EP0825741A2 | 0.781 | Communication method and apparatus | GRANT | 1998-02-25 | 1996-08-23 | 16790085 | Great | Sony Corp | Sony Corp |
EP0810746A2 | 0.775 | Transmission apparatus using a multi-carrier signal with allocation of subcarriers | GRANT | 1997-12-03 | 1996-05-27 | 15081285 | Great | Sony Corp | Sony Corp |
EP0825732A2 | 0.772 | Transmission method and apparatus in a cellular communication system | GRANT | 1998-02-25 | 1996-08-23 | 16790102 | Great | Sony Corp | Sony Corp |
US6515960B1 | 0.771 | Radio communication system | GRANT | 2003-02-04 | 1997-08-27 | 16919485 | Great | Sony Corp | Sony Corp |
EP0616445B1 | 0.768 | Duplex multicarrier digital radio communication system mobile station and base station for it | GRANT | 2000-05-31 | 1993-03-17 | 9445216 | Great | Telediffusion de France ets Public de Diffusion, France Telecom SA | Telediffusion de France ets Public de Diffusion, Orange SA |
US5369637A | 0.768 | Signal transmission system | GRANT | 1994-11-29 | 1991-04-03 | 26298673 | Great | US Philips Corp | US Philips Corp |
US6574283B1 | 0.767 | Communication method transmission and reception apparatuses and cellular radio communication system | GRANT | 2003-06-03 | 1997-08-19 | 16777745 | Great | Sony Corp | Sony Corp |
EP1014639A2 | 0.765 | OFDM transmission/reception apparatus with selection of the optimal guard interval length | GRANT | 2000-06-28 | 1998-12-22 | 26415786 | Great | Panasonic Corp | Panasonic Corp |
EP1014609A1 | 0.760 | COMMUNICATION METHOD TRANSMITTER AND RECEIVER | GRANT | 2000-06-28 | 1998-07-13 | 16376771 | Great | Sony Corp | Sony Corp |
EP0810753A2 | 0.760 | Multiple access transmitting and receiving system employing multiplexing of multicarrier signals | GRANT | 1997-12-03 | 1996-05-27 | 15081354 | Great | Sony Corp | Sony Corp |
EP0825731A2 | 0.758 | Communication method and apparatus for multiple access at base stations | GRANT | 1998-02-25 | 1996-08-23 | 16790120 | Great | Sony Corp | Sony Corp |
EP0810744A2 | 0.757 | Communication method and communication apparatus | GRANT | 1997-12-03 | 1996-05-27 | 15081309 | Great | Sony Corp | Sony Corp |
EP1128586A2 | 0.754 | Digital radio communication system and method with adaptive modulation | GRANT | 2001-08-29 | 2000-02-25 | 26586076 | Great | Panasonic Corp | Panasonic Corp |
US4763322A | 0.753 | Digital radio transmission system with variable duration of the time slots in the time-division multiplex frame | GRANT | 1988-08-09 | 1985-07-31 | 6277202 | Great | US Philips Corp | US Philips Corp |
US6980509B1 | 0.748 | Transmitting device and method and providing medium | GRANT | 2005-12-27 | 1999-03-04 | 13056533 | Great | Sony Corp | Sony Corp |
EP1087546A1 | 0.748 | Method and system for radio communication | GRANT | 2001-03-28 | 1999-09-21 | 8241630 | Great | Sony Corp | Sony Corp |
EP0825728A2 | 0.748 | Communication method and apparatus with transmission power control | GRANT | 1998-02-25 | 1996-08-23 | 16790181 | Great | Sony Corp | Sony Corp |
US6414986B1 | 0.746 | Method and system for radio communication | GRANT | 2002-07-02 | 1998-08-24 | 17014584 | Great | Sony Corp | Redwood Technologies LLC |
US6108353A | 0.746 | Demodulating apparatus | GRANT | 2000-08-22 | 1997-01-20 | 11679952 | Great | Sony Corp | Sony Corp |
US20020037732A1 | 0.745 | Data communications synchronization using GPS receivers | APPLICATION | 2002-03-28 | 2000-04-14 | 27393692 | Good | VARITEK INDUSTRIES Inc | VARITEK INDUSTRIES Inc |
EP0915629B1 | 0.739 | Communication terminal device cellular radio communication system and information communication method | GRANT | 2011-02-02 | 1997-10-31 | 17895668 | Good | Sony Corp | Sony Corp |
US6856590B2 | 0.737 | OFDM transmission device and OFDM transmission method | GRANT | 2005-02-15 | 2000-04-13 | 18628571 | Good | Sony Corp | Sony Corp |
EP0660559B1 | 0.731 | Multicarrier frequency-hopping communication system | GRANT | 2005-04-27 | 1993-12-22 | 9454233 | Good | Koninklijke Philips Electronics NV | Laboratoires dElectronique Philips SAS, Koninklijke Philips NV |
US7170850B2 | 0.729 | Transmission apparatus and method and providing medium thereof | GRANT | 2007-01-30 | 2000-03-06 | 35513776 | Good | Sony Corp | Sony Corp |
US7133352B1 | 0.728 | Bi-directional communication channel | GRANT | 2006-11-07 | 1999-09-20 | 34102554 | Good | Zion Hadad Communications Ltd | Zion Hadad Communications Ltd |
EP1179902B1 | 0.725 | TRANSMITTER RECEIVER AND METHOD OF DATA TRANSMISSION | GRANT | 2008-07-23 | 2000-03-15 | 18591168 | Good | Panasonic Corp | Panasonic Corp |
US9590834B2 | 0.717 | Radio communication apparatus capable of switching modulation schemes | GRANT | 2017-03-07 | 2000-10-20 | 27481723 | Good | Wi-Fi One LLC | Redwood Technologies LLC |
US7075949B2 | 0.713 | OFDM receiving device and OFDM receiving method | GRANT | 2006-07-11 | 2000-04-13 | 18628572 | Good | Sony Corp | Sony Corp |
EP1083720B1 | 0.702 | Multicarrier transmission | GRANT | 2019-03-06 | 1999-09-07 | 17241638 | Good | Wi-Fi One Technologies International Ltd | WI-FI ONE TECHNOLOGIES INTERNATIONAL LIMITED |
EP1083719B1 | 0.699 | Multicarrier transmission with adaptive allocation of reference symbols | GRANT | 2006-01-11 | 1999-09-07 | 17241622 | Good | Sony Corp | Sony Corp |
US7397804B2 | 0.698 | System and method for synchronizing data transmission from multiple wireless base transceiver stations to a subscriber unit | GRANT | 2008-07-08 | 2000-11-07 | 24844666 | Good | Intel Corp | Apple Inc |
EP1143678A2 | 0.693 | Synchronisation in a multicarrier broadcast receiver | GRANT | 2001-10-10 | 2000-04-07 | 18624199 | Good | Sony Corp | Sony Corp |
EP0610988A1 | 0.691 | Multi-user spread spectrum communication system | GRANT | 1994-08-17 | 1993-02-03 | 9443687 | Good | Laboratoires dElectronique Philips SAS, Koninklijke Philips Electronics NV | Laboratoires dElectronique Philips SAS, Koninklijke Philips NV |
US5602835A | 0.687 | OFDM synchronization demodulation circuit | GRANT | 1997-02-11 | 1993-11-16 | 17712489 | Good | Toshiba Corp | Toshiba Corp |
EP0938208A1 | 0.686 | Multicarrier transmission compatible with the existing GSM system | GRANT | 1999-08-25 | 1998-02-22 | 8231462 | Good | Sony International Europe GmbH | Sony Deutschland GmbH |
EP1164807A2 | 0.686 | Radio communication system radio base-station apparatus mobile radio-station apparatus radio-zone assignment method and radio communication method | GRANT | 2001-12-19 | 2000-06-14 | 18680337 | Good | Sony Corp | Sony Corp |
EP1142172B1 | 0.684 | METHOD AND COMMUNICATIONS ASSEMBLY FOR TRANSFERRING INFORMATION BY USING A MULTI-CARRIER METHOD | GRANT | 2003-11-12 | 1998-12-15 | 7891145 | Good | Siemens AG | Siemens AG |
EP0682426A2 | 0.681 | OFDM transmitter and receiver | GRANT | 1995-11-15 | 1994-05-09 | 26457326 | Good | Victor Company of Japan Ltd | Victor Company of Japan Ltd |
US6252910B1 | 0.680 | Bandwidth efficient QAM on a TDM-FDM system for wireless communications | GRANT | 2001-06-26 | 1998-11-11 | 26805352 | Good | ComSpace Corp | Benhov GmbH LLC |
EP1190513B1 | 0.680 | METHOD AND APPARATUS FOR DETERMINING TRANSMISSION MODE AND SYNCHRONIZATION FOR A DIGITAL AUDIO BROADCASTING SIGNAL | GRANT | 2006-12-27 | 1999-06-24 | 23328669 | Good | Ibiquity Digital Corp | Ibiquity Digital Corp |
US6661771B1 | 0.676 | Method and apparatus for interleaver synchronization in an orthogonal frequency division multiplexing (OFDM) communication system | GRANT | 2003-12-09 | 1999-09-17 | 29712265 | Good | Nokia of America Corp | LGS Innovations LLC |
US5781592A | 0.675 | Selective diversity system | GRANT | 1998-07-14 | 1993-09-28 | 17076247 | Good | Toshiba Corp | Toshiba Corp |
US7646702B2 | 0.675 | OFDM communication apparatus | GRANT | 2010-01-12 | 2000-11-17 | 18824767 | Good | Panasonic Corp | INVT SPE LLC |
US7403570B2 | 0.674 | Preamble design for multiple input—multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) system | GRANT | 2008-07-22 | 2000-09-01 | 26923798 | Good | Nortel Networks Ltd | Apple Inc |
US4972506A | 0.673 | Method of transmitting data information in a mobile cellular radio communication system | GRANT | 1990-11-20 | 1988-03-15 | 20371694 | Good | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
US6882633B2 | 0.668 | Method and device for synchronizing a mobile radio receiver with a frame structure of a radio signal | GRANT | 2005-04-19 | 1999-04-16 | 7904864 | Good | Infineon Technologies AG | Intel Deutschland GmbH |
EP1290845A2 | 0.666 | METHOD FOR SYNCHRONISING OFDM SYMBOLS DURING RADIO TRANSMISSIONS | GRANT | 2003-03-12 | 2000-05-26 | 7643785 | Good | Robert Bosch GmbH | Robert Bosch GmbH |
US5596582A | 0.665 | AFC in OFDM modulation by shift of a window along a reception sample sequence | GRANT | 1997-01-21 | 1994-05-26 | 15220735 | Good | NEC Corp, Nippon Hoso Kyokai NHK | NEC Corp, Japan Broadcasting Corp |
US6683864B1 | 0.662 | Transmission method and transmission apparatus | GRANT | 2004-01-27 | 1998-04-13 | 14302619 | Good | Sony Corp | Redwood Technologies LLC |
US5657313A | 0.660 | Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing | GRANT | 1997-08-12 | 1994-05-09 | 27459747 | Good | Victor Company of Japan Ltd | JVCKenwood Corp |
US7664193B2 | 0.658 | Multiplexing of real time services and non-real time services for OFDM systems | GRANT | 2010-02-16 | 2000-03-22 | 35005179 | Good | Qualcomm Inc | Qualcomm Inc |
EP0939527A1 | 0.654 | Mapping of multicarrier signals into GSM time slots | GRANT | 1999-09-01 | 1998-02-18 | 8231443 | Good | Sony International Europe GmbH | Sony Deutschland GmbH |
EP1051818A1 | 0.652 | FREQUENCY SYNCHRONIZING DEVICE FOR OFDM/CDMA SYSTEM | GRANT | 2000-11-15 | 1998-12-01 | 19560741 | Good | Samsung Electronics Co Ltd | Samsung Electronics Co Ltd |
EP1278323A1 | 0.648 | OFDM MODEM SYSTEM | GRANT | 2003-01-22 | 2000-09-07 | 18758392 | Good | Sony Corp | Sony Corp |
US5533024A | 0.648 | Radio channel selection method and system | GRANT | 1996-07-02 | 1994-03-08 | 13193334 | Good | NEC Corp | NEC Corp |
US8111607B2 | 0.647 | Frequency division multiplexing system with selectable rate | GRANT | 2012-02-07 | 1998-01-06 | 8233277 | Good | Mosaid Technologies Inc | Mosaid Technologies Inc |
US5781540A | 0.646 | Device and method for communicating in a mobile satellite system | GRANT | 1998-07-14 | 1995-06-30 | 23977446 | Good | Hughes Electronics Corp | JPMorgan Chase Bank NA, Hughes Network Systems LLC |
EP1253733A1 | 0.646 | RADIO TRANSMITTING APPARATUS AND RADIO TRANSMITTING METHOD | GRANT | 2002-10-30 | 2000-11-01 | 18810365 | Good | Panasonic Corp | Panasonic Corp |
EP1192745A1 | 0.641 | APPARATUS OF COMPENSATING FOR FREQUENCY OFFSET USING PILOT SYMBOL IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM | GRANT | 2002-04-03 | 1999-07-05 | 19599360 | Good | Samsung Electronics Co Ltd | Samsung Electronics Co Ltd |
US7505420B2 | 0.639 | Guard section length detecting device and method for orthogonal frequency division multiplexing system receiver | GRANT | 2009-03-17 | 1997-09-30 | 19522036 | Good | Samsung Electronics Co Ltd | Samsung Electronics Co Ltd |
US6456627B1 | 0.636 | Method for communicating information in a communication system that supports multiple modulation schemes | GRANT | 2002-09-24 | 1997-08-29 | 25445337 | Good | Telefonaktiebolaget LM Ericsson AB | BlackBerry Ltd |
EP1133841B1 | 0.632 | SYSTEM AND METHOD FOR COMPENSATING TIMING ERRORS USING PILOT SYMBOLS IN A OFDM/CDMA COMMUNICATION SYSTEM | GRANT | 2008-05-14 | 1999-09-29 | 36974549 | Good | Samsung Electronics Co Ltd | Samsung Electronics Co Ltd |
US6125148A | 0.631 | Method for demodulating information in a communication system that supports multiple modulation schemes | GRANT | 2000-09-26 | 1997-08-29 | 25445336 | Good | Telefonaktiebolaget LM Ericsson AB | Cluster LLC, HPS Investment Partners LLC |
EP1063824A2 | 0.630 | Symbol synchronisation in multicarrier receivers | GRANT | 2000-12-27 | 1999-06-22 | 15988197 | Good | Panasonic Corp | Panasonic Corp |
EP0822691A2 | 0.627 | Symbol synchronisation in a multicarrier receiver | GRANT | 1998-02-04 | 1996-07-31 | 16732452 | Good | Victor Company of Japan Ltd | Victor Company of Japan Ltd |
EP0729250A2 | 0.622 | OFDM transmission/reception system and transmitting/receiving apparatus | GRANT | 1996-08-28 | 1995-02-24 | 12486735 | Good | Toshiba Corp | Toshiba Corp |
US7058006B2 | 0.622 | OFDM communication apparatus | GRANT | 2006-06-06 | 1999-07-29 | 16672735 | Good | Panasonic Corp | Panasonic Intellectual Property Corp of America |
US20130051291A1 | 0.620 | METHOD FOR FREQUENCY DIVISION DUPLEX COMMUNICATIONS | APPLICATION | 2013-02-28 | 1997-02-06 | 25168559 | Good | AT&T Mobility II LLC | AT&T Mobility II LLC, AT&T Wireless Services Inc |
EP0998068B1 | 0.614 | OFDM (ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING) RECEIVER | GRANT | 2005-04-20 | 1998-02-20 | 12521708 | Good | Sony Corp | Sony Corp |
WO2000064091A2 | 0.610 | METHOD AND SYSTEM TO SYNCHRONISE BASE STATIONS IN DIGITAL TELECOMMUNICATION NETWORKS | APPLICATION | 2000-10-26 | 1999-04-16 | 11382754 | Good | ||
US5684794A | 0.609 | Validation of subscriber signals in a cellular radio network | GRANT | 1997-11-04 | 1996-01-25 | 24364741 | Good | Hazeltine Corp | ANTENNA PRODUCTS Inc |
US5909469A | 0.607 | Link adaptation method for links using modulation schemes that have different symbol rates | GRANT | 1999-06-01 | 1997-08-29 | 25445271 | Good | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
EP1195961B1 | 0.607 | Frequency offset correction in multicarrier receivers | GRANT | 2007-02-07 | 2000-09-29 | 19691069 | Good | Samsung Electronics Co Ltd | Samsung Electronics Co Ltd |
EP1330904A2 | 0.606 | CLOCK SYNCHRONIZATION FREQUENCY SYNCHRONIZATION CHANNEL SOUNDER AND EQUALIZER FOR OFDM USING PILOTS EQUIDISTANT IN THE FREQUENCY DOMAIN | GRANT | 2003-07-30 | 2000-01-28 | 23961192 | Good | Zion Hadad Communications Ltd | Zion Hadad Communications Ltd |
US6477385B1 | 0.605 | Mobile communication system and method for establishing synchronization in mobile communications | GRANT | 2002-11-05 | 1998-07-27 | 16825652 | Good | NEC Corp | NEC Corp |
EP0786890A2 | 0.605 | Resource allocation in a multi-user multicarrier mobile radio system | GRANT | 1997-07-30 | 1996-01-29 | 11819675 | Good | Sony Corp | Sony Corp |
EP0752779A2 | 0.600 | Distribution of phase of references in a multicarrier system | GRANT | 1997-01-08 | 1995-07-03 | 8543725 | Good | Nokia Mobile Phones Ltd, Nokia Networks Oy | Nokia Mobile Phones Ltd, Nokia Networks Oy, Nokia Oyj |
US5608764A | 0.599 | OFDM synchronization demodulation circuit | GRANT | 1997-03-04 | 1993-11-12 | 17667385 | Good | Toshiba Corp | Toshiba Corp |
US20090092037A1 | 0.598 | Wireless Interactive System and Method | APPLICATION | 2009-04-09 | 1999-09-20 | 24501198 | Good | ||
US5768260A | 0.595 | Device for changing the transmission parameters in a radio transmitter | GRANT | 1998-06-16 | 1993-06-02 | 26661753 | Good | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
US4763325A | 0.592 | Demand assigned reformatting with an overflow area for time division multiple access communication | GRANT | 1988-08-09 | 1985-09-04 | 25095402 | Good | Comsat Telesystems Inc | Comsat Corp |
EP1617613B1 | 0.591 | OFDM communication devices using pseudo random modulated reference symbols | GRANT | 2007-09-19 | 1995-01-10 | 26335363 | Good | Panasonic Corp | Panasonic Corp |
US6125124A | 0.590 | Synchronization and sampling frequency in an apparatus receiving OFDM modulated transmissions | GRANT | 2000-09-26 | 1996-09-16 | 8546662 | Good | Nokia Technology GmbH | WSOU Investments LLC |
US7319686B1 | 0.590 | Frame synchronization in multi-cell systems with a data interface | GRANT | 2008-01-15 | 1999-03-18 | 38921053 | Good | Industrial Technology Research Institute ITRI | Industrial Technology Research Institute ITRI |
US6807146B1 | 0.589 | Protocols for scalable communication system using overland signals and multi-carrier frequency communication | GRANT | 2004-10-19 | 2000-04-21 | 24210357 | Good | Atheros Communications Inc | Qualcomm Inc |
US4357700A | 0.586 | Adaptive error encoding in multiple access systems | GRANT | 1982-11-02 | 1978-08-10 | 25462534 | Good | International Business Machines Corp | International Business Machines Corp |
EP1207664A2 | 0.585 | Gain control in an OFDM receiver | GRANT | 2002-05-22 | 2000-11-16 | 26604073 | Good | Pioneer Corp | Pioneer Corp |
US7586873B2 | 0.584 | Wireless communications system that supports multiple modes of operation | GRANT | 2009-09-08 | 2000-09-01 | 34826310 | Good | Intel Corp | Apple Inc |
EP0961448A2 | 0.581 | Modulator demodulator and transmission system for use in OFDM transmission | GRANT | 1999-12-01 | 1998-05-26 | 15371835 | Good | Panasonic Corp | Panasonic Corp |
US5533028A | 0.579 | Communications subsystem between base stations and base station controllers in burst communications systems | GRANT | 1996-07-02 | 1993-06-25 | 8282354 | Good | Alcatel Lucent NV | Alcatel Lucent NV |
US6563896B1 | 0.578 | Digital broadcast receiver and receiving method | GRANT | 2003-05-13 | 1998-08-04 | 16753851 | Good | Sony Corp | Sony Corp |
US5533004A | 0.576 | Method for providing and selecting amongst multiple data rates in a time division multiplexed system | GRANT | 1996-07-02 | 1994-11-07 | 23309720 | Good | Motorola Inc | Motorola Solutions Inc |
US6314082B1 | 0.573 | Broadcast network selection techniques for radiocommunication systems | GRANT | 2001-11-06 | 1997-11-17 | 25513770 | Good | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
US5828695A | 0.573 | QAM system in which the constellation is modified in accordance with channel quality | GRANT | 1998-10-27 | 1991-06-03 | 26298993 | Good | British Telecommunications PLC | BlackBerry Ltd |
US6891822B1 | 0.569 | Method and apparatus for transferring isocronous data within a wireless computer network | GRANT | 2005-05-10 | 2000-09-08 | 24638175 | Good | Sharewave Inc | Cirrus Logic Inc |
USRE40568E1 | 0.566 | Synchronization symbol structure using OFDM based transmission method | GRANT | 2008-11-11 | 1999-01-08 | 26152852 | Good | Sony Corp | Redwood Technologies LLC |
EP1021019A1 | 0.564 | Quasi-differential modulation/demodulation method for multi-amplitude digital modulated signals and OFDM system | GRANT | 2000-07-19 | 1999-01-15 | 8237356 | Good | Sony International Europe GmbH | Sony Deutschland GmbH |
US6907026B2 | 0.562 | Receiving apparatus for signal transmission system of orthogonal frequency division multiplexing type | GRANT | 2005-06-14 | 2000-06-27 | 18691473 | Good | Hitachi Kokusai Electric Inc | Hitachi Kokusai Electric Inc |
US5619507A | 0.561 | Method and apparatus for establishing and maintaining frame synchronization in a satellite communication system | GRANT | 1997-04-08 | 1993-06-30 | 16361430 | Good | NEC Corp | NEC Corp |
EP0562868A2 | 0.557 | Method and apparatus for multiple access between transceivers in wireless communication using OFDM spread spectrum | GRANT | 1993-09-29 | 1992-03-27 | 25675066 | Good | WiLAN Inc | Quarterhill Inc |
US6700875B1 | 0.553 | System device and method for selecting a channel in a multichannel communication network | GRANT | 2004-03-02 | 1998-03-31 | 21976205 | Good | Motorola Inc | Motorola Mobility LLC, Arris Enterprises LLC |
EP1193933B1 | 0.552 | Symbol-timing synchronization in multicarrier receivers | GRANT | 2008-08-06 | 2000-09-29 | 24712618 | Good | Symbol Technologies LLC | Symbol Technologies LLC |
US6795407B2 | 0.550 | Methods for controlling shared access to wireless transmission systems and increasing throughput of the same | GRANT | 2004-09-21 | 2000-04-22 | 22735996 | Good | Atheros Communications Inc | Qualcomm Inc |
EP1037442B1 | 0.550 | OFDM communication apparatus | GRANT | 2008-04-30 | 1999-03-16 | 13444851 | Good | Panasonic Corp | Panasonic Corp |
US5970400A | 0.549 | Adjusting the timing and synchronization of a radio's oscillator with a signal from an SATPS satellite | GRANT | 1999-10-19 | 1996-04-30 | 24585769 | Good | Magellan Corp | Mitac International Corp |
US20020039906A1 | 0.547 | Method of synchronising base stations | APPLICATION | 2002-04-04 | 2000-10-03 | 8855058 | Good | Mitsubishi Electric Corp | Mitsubishi Electric Corp |
US4881245A | 0.545 | Improved signalling method and apparatus | GRANT | 1989-11-14 | 1983-07-01 | 26706933 | Good | Harris Corp | Harris Corp |
US6119016A | 0.541 | Synchronizing base stations in a wireless telecommunications system | GRANT | 2000-09-12 | 1998-06-10 | 22250439 | Good | Nokia of America Corp | Nokia of America Corp, Provenance Asset Group LLC, Nokia USA Inc |
US6977913B1 | 0.541 | Radio communication device for radio packet communication system | GRANT | 2005-12-20 | 1998-07-21 | 16510959 | Good | NEC Corp | NEC Corp |
US7542729B2 | 0.539 | Communication system | GRANT | 2009-06-02 | 1992-03-26 | 27565104 | Good | Panasonic Corp | Panasonic Corp |
US6496982B1 | 0.538 | Device and method relating to cable TV networks | GRANT | 2002-12-17 | 1996-02-19 | 20401441 | Good | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
US5282222A | 0.538 | Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum | GRANT | 1994-01-25 | 1992-03-31 | 25336586 | Good | Quarterhill Inc | Quarterhill Inc |
US6009073A | 0.536 | Method for transmitting an orthogonal frequency division multiplex signal apparatus for transmitting the signal and apparatus for receiving the signal | GRANT | 1999-12-28 | 1995-09-25 | 26383688 | Good | Victor Company of Japan Ltd | Rakuten Group Inc |
US5933053A | 0.533 | Burst demodulator | GRANT | 1999-08-03 | 1997-02-28 | 12752083 | Good | NEC Corp | NEC Corp |
US6963626B1 | 0.530 | Noise-reducing arrangement and method for signal processing | GRANT | 2005-11-08 | 1998-10-02 | 35207060 | Good | Leland Stanford Junior University | Leland Stanford Junior University |
US6028845A | 0.529 | Communication-line-quality measuring system using a conventional signal frame structure | GRANT | 2000-02-22 | 1996-02-21 | 12381492 | Good | Fujitsu Ltd | Fujitsu Ltd |
US6922388B1 | 0.528 | Signal construction detection and estimation for uplink timing synchronization and access control in a multi-access wireless communication system | GRANT | 2005-07-26 | 2000-02-11 | 24000524 | Good | Nokia of America Corp | GEMATLO SA, Alcatel Lucent SAS, Thales DIS France SA |
US4581736A | 0.527 | Multiple downlink data aggregator and system | GRANT | 1986-04-08 | 1983-03-01 | 23871350 | Good | Comsat Corp | Comsat Corp |
US6747948B1 | 0.524 | Interleaver scheme in an OFDM system with multiple-stream data sources | GRANT | 2004-06-08 | 1999-08-11 | 32326137 | Good | Nokia of America Corp | Provenance Asset Group LLC, Nokia USA Inc |
US5963592A | 0.519 | Adaptive channel equalizer for use in digital communication system utilizing OFDM method | GRANT | 1999-10-05 | 1996-12-28 | 19491932 | Good | Daewoo Electronics Co Ltd | WiniaDaewoo Co Ltd |
US5991289A | 0.519 | Synchronization method and apparatus for guard interval-based OFDM signals | GRANT | 1999-11-23 | 1997-08-05 | 25422429 | Good | Industrial Technology Research Institute ITRI | Industrial Technology Research Institute ITRI |
US7012882B2 | 0.517 | Channel estimator for OFDM system | GRANT | 2006-03-14 | 2000-08-01 | 8169423 | Good | Sony International Europe GmbH | Sony Deutschland GmbH |
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JPS55132157A | NR | FRAME-SYNCHRONOUS PATTERN DETECTING CIRCUIT | GRANT | 1980-10-14 | 1979-03-31 | 12505016 | Good | ||
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JPS5215201A | NR | INTER-OFFICE SYNCHRONIZING SYSTEM | GRANT | 1977-02-04 | 1975-07-28 | 14034414 | Good | ||
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JPH08107431A | NR | DEMODULATOR | GRANT | 1996-04-23 | 1994-10-05 | 17078121 | Good | ||
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JP2009118533A | NR | BURST CARRIER FREQUENCY SYNCHRONIZATION AND ITERATIVE FREQUENCY-DOMAIN FRAME SYNCHRONIZATION FOR OFDM | APPLICATION | 2009-05-28 | 1998-06-08 | 26778658 | Good | ||
JP2004523934A | NR | No title | APPLICATION | 2004-08-05 | 2000-10-10 | 24754410 | Good | ||
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JP2002537729A | NR | No title | APPLICATION | 2002-11-05 | 1999-02-18 | 22958273 | Good | ||
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GB2271693A | NR | Communications system having pilot signals transmitted over frequency divided channels | GRANT | 1994-04-20 | 1992-10-13 | 10723357 | Good | Motorola Israel Ltd | Motorola Solutions Israel Ltd |
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JPH11113049A | NR | RADIO COMMUNICATION SYSTEM | GRANT | 1999-04-23 | 1997-09-30 | 17419015 | Fair | ||
JPH10336142A | NR | RECEIVER FOR DIGITAL AUDIO BROADCAST | GRANT | 1998-12-18 | 1997-06-02 | 15355188 | Fair | ||
JPH10190610A | NR | RECEIVER OF MULTICARRIER SYSTEM | GRANT | 1998-07-21 | 1996-12-24 | 18366892 | Fair | ||
JPH08265312A | NR | SYNCHRONIZATION CONTROL SYSTEM | GRANT | 1996-10-11 | 1995-03-20 | 13168027 | Fair | ||
JPH0799486A | NR | OFDM RECEPTION SYNCHRONIZING CIRCUIT | GRANT | 1995-04-11 | 1993-09-28 | 17078043 | Fair | ||
JPH0653918A | NR | IDLE CHANNEL DETECTING CIRCUIT AND METHOD FOR TIME-DIVISION MULTIPLEX CONNECTING COMMUNICATION | GRANT | 1994-02-25 | 1992-07-29 | 16444715 | Fair | ||
JPH05308334A | NR | FRAME SYNCHRONIZATION SYSTEM OF TDMA SYSTEM RADIO BASE STATION | GRANT | 1993-11-19 | 1992-04-28 | 15126773 | Fair | ||
JPH03224325A | NR | TDMA DIGITAL MOBILE COMMUNICATION SYSTEM | GRANT | 1991-10-03 | 1989-12-27 | 26572716 | Fair | ||
JPH0226135A | NR | MOBILE RADIO EQUIPMENT | GRANT | 1990-01-29 | 1988-07-15 | 16014067 | Fair | ||
JPH02224428A | NR | INDEPENDENT SYNCHRONOUS REPEATING SYSTEM | GRANT | 1990-09-06 | 1989-02-27 | 12652922 | Fair | ||
JP2001197142A | NR | DEVICE AND METHOD FOR COMMUNICATION | APPLICATION | 2001-07-19 | 2000-01-14 | 18534293 | Fair | ||
JP2001197034A | NR | MICROWAVE REPEATING TRANSMISSION SYSTEM FOR GROUND DIGITAL TELEVISION BROADCAST | APPLICATION | 2001-07-19 | 2000-01-17 | 18536437 | Fair | ||
JP2001156740A | NR | MULTI-CARRIER COMMUNICATION EQUIPMENT AND MULTI-CARRIER COMMUNICATION METHOD | APPLICATION | 2001-06-08 | 1999-11-30 | 18328104 | Fair | ||
JP2000196560A | NR | DIGITAL COMMUNICATION EQUIPMENT | APPLICATION | 2000-07-14 | 1998-12-28 | 18503304 | Fair |