Patents
Patents for H04J 1 - Frequency-division multiplex systems (15,293)
05/2005
05/25/2005CN1620777A Data communication method for use between single carrier system and multiple carrier system
05/25/2005CN1203610C Frequency changing device
05/24/2005US6898207 Techniques for communicating information using Hermite-Gaussian basis functions
05/24/2005US6898188 Gatekeeper simulator in a LAN telephony system
05/19/2005WO2005045689A2 Methods and systems for network coordination
05/19/2005WO2004081745A3 Methods and systems for dynamic, rules-based peg counting
05/19/2005US20050105477 Network for telephony and data communication
05/19/2005US20050105472 Test access matrix (TAM) protector module and associated circuitry for a telecommunications system
05/18/2005EP1531558A1 Transmitting apparatus, receiving apparatus, radio communication method, and radio communication system
05/18/2005CN2701176Y Radio code-division multi-access user equipment
05/17/2005US6895059 Method and apparatus for data transfer using a time division multiple frequency scheme
05/17/2005US6894987 Method and apparatus for integrating video, voice and computer data traffic in a single, conferencing system using existing telephone and CATV connections
05/17/2005US6894973 Fair bandwidth sharing for video traffic sources using distributed feedback control
05/17/2005US6894972 Intelligent collaboration across network system
05/12/2005WO2005043780A1 Method of downlink resource allocation in a sectorized environment
05/12/2005US20050100043 Network combining wired and non-wired segments
05/12/2005US20050099955 Ethernet OAM fault isolation
05/12/2005US20050099948 Automated path tracing through switching mesh
05/11/2005EP1344335B1 Sub-channels for the random access channel in a time division duplex system
05/11/2005EP1116351A4 Method and apparatus for multiple access communication
05/11/2005CN1614966A Radio communication device
05/11/2005CN1614919A DSL system for transferring mixed DSL signals through user access wire
05/10/2005US6891858 Dynamic modulation of modulation profiles for communication channels in an access network
05/10/2005US6891812 Method and apparatus for data rate control in a communication system
05/05/2005US20050095986 Spectrum sharing in the unlicensed band
05/05/2005US20050094673 Signal generator for digital broadcasting
05/05/2005US20050094556 Multi-link network architecture, including security, in seamless roaming communications systems and methods
05/04/2005EP1527646A1 System and method for retransmission of data
05/04/2005EP1527523A2 Channel switching for support of multimedia broadcast and multicast services
05/04/2005EP1495567A4 Software parameterizable control blocks for use in physical layer processing
05/04/2005EP1271894B1 Packet transmitter unit, packet receiver unit and packet transmission system
05/04/2005CN1613205A 多信道宽带内容分配系统 Multichannel broadband content distribution system
05/04/2005CN1612553A Method of initializing equalizer of digital television receiver and equalizer using the same
05/04/2005CN1612496A Spectrum sharing in the unlicensed band
04/2005
04/28/2005WO2005039082A1 Frequency combining apparatus and frequency combining method
04/28/2005US20050089114 Dynamic allocation of frequency spectrum
04/28/2005US20050088958 Crosstalk reduction in a backplane employing low-skew clock distribution
04/27/2005EP1526674A1 Method for subcarrier allocation and for modulation scheme selection in a wireless multicarrier transmission system
04/27/2005EP1526660A1 User equipment for communicating using a physical random access channel
04/27/2005EP1525704A1 Time-frequency interleaved mc-cdma for quasi-synchronous systems
04/27/2005EP1525690A1 Methods and apparatus for network signal aggregation and bandwidth reduction
04/27/2005EP1525689A1 Software fault tolerance between nodes
04/27/2005EP1525688A1 Centralized buffer architecture for an orthogonal frequency division multiplexing (ofdm) receiver
04/27/2005EP0883940B1 Subtractive multicarrier cdma access methods and systems
04/27/2005CN1611026A Apparatus and method for generating preamble sequence in an OFDM communication system
04/27/2005CN1611025A Methods and communications terminals for increasing capacity CDMA communications networks
04/27/2005CN1610333A Method for subcarrier allocation and for modulation scheme selection in a wireless multicarrier transmission system
04/26/2005US6885670 Method and apparatus for fault tolerant, software transparent and high data integrity extension to a backplane or bus interconnect
04/26/2005US6885637 Distributed determination of explicit rate in an ATM communication system
04/26/2005CA2169787C Vehicle communications network with improved current sourcing
04/21/2005WO2005036804A2 Apparatus, and associated method, for facilitating communication handoff in multiple-network radio communication system
04/21/2005WO2005036789A1 Method of optimizing a network
04/21/2005US20050085236 Method for subcarrier allocation and modulation scheme selection in wireless multicarrier transmission system
04/21/2005US20050085196 Radio communication device
04/21/2005US20050085190 Wireless communication system, wireless communication apparatus, wireless communication method and computer program
04/21/2005US20050083837 Transmission system
04/20/2005EP1523820A1 A fault-tolerant broadcast router
04/20/2005EP1380115B1 Transmitting device limiting the out-of-band interferences
04/20/2005CN1198441C Network for telephony and data communication
04/14/2005WO2005034408A2 Wireless network system and method
04/14/2005WO2005004370A3 Quality determination for packetized information
04/14/2005WO2004114576A3 System for crosstalk noise reduction on twisted pair
04/14/2005US20050081110 Hybrid agent-oriented object model to provide software fault tolerance between distributed processor nodes
04/14/2005US20050078710 General interface control circuit
04/14/2005US20050078709 Device and method for avoiding retraining processes in integrated voice and xdsl data transmission
04/14/2005US20050078601 Hash and route hardware with parallel routing scheme
04/13/2005EP1522151A2 System and method for a direct conversion multi-carrier processor
04/13/2005CN2692925Y Code Division Multiplex channel access substation for estimating interference signal code power and noise deviation
04/12/2005US6879626 Transmission/reception apparatus and modulation system estimation method
04/12/2005US6879601 Method and system for conveying multiple calls on a single telephone line
04/07/2005US20050074057 System and method for modulation on demand in a computing device
04/07/2005US20050073973 Method of downlink resource allocation in a sectorized environment
04/07/2005US20050073950 Method and apparatus for resolving deadlock of auto-negotiation sequence between switches
04/06/2005EP1521399A1 Radio communication method, radio communication terminal, and radio lan system
04/06/2005EP1520363A1 Mt-cdma using spreading codes with interference-free windows
04/06/2005EP1520351A1 Ultra-wideband signal receiver using frequency sub-bands
04/06/2005EP1097535A4 An improved wireless transceiver and frequency plan
04/06/2005EP0920757B1 Signal transformation method and apparatus
04/06/2005CN1604543A Method and apparatus for resolving deadlock of auto-negotiation sequence between switches
04/06/2005CN1604510A New access preamble generating method in OFDM communication system
04/06/2005CN1196366C Communication network with improved access protocol
04/06/2005CN1196294C Method for determining gains of different carriers, radio transmission units and modules for such units
04/06/2005CN1196287C Satellite direct radio broadcast system
03/2005
03/31/2005WO2005029744A2 Ultra-wideband communication protocol
03/31/2005US20050068994 Variable bandwidth signal multiplexer and demultiplexer
03/31/2005US20050068983 Policy and attribute based access to a resource
03/31/2005US20050068930 Method of allocating frequency subband and apparatus adopting the same
03/31/2005US20050068910 Method of optimizing a network
03/31/2005US20050068886 Multi-symbol encapsulated OFDM transmission
03/30/2005CN1601940A Phase annoying method of signal peak even power rate suppressed quadrature frequency division complex
03/29/2005CA2483117A1 Multi-symbol encapsulated ofdm system
03/29/2005CA2477907A1 Variable bandwidth signal multiplexer and demultiplexer
03/24/2005WO2005008392A3 Network span protection using span identifiers
03/24/2005US20050063496 Method of selecting a receiving path and receiving device comprising sereral receiving paths
03/24/2005US20050063330 Method for uplink bandwidth request and allocation based on a quality of service class in a broadband wireless access communication system
03/24/2005US20050063298 Synchronization in a broadcast OFDM system using time division multiplexed pilots
03/23/2005EP1517458A1 Sub-channels for the random access channel in a time division duplex system
03/23/2005CN1599988A Method of selecting a receiving path and receiving device comprising several receiving paths
03/23/2005CN1599298A OFDM frequence synchronous method at multi-path channel
03/22/2005US6871046 Radio transmitting apparatus and radio transmitting method