| Patents for H04L 27 - Modulated-carrier systems (89,721) |
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| 05/13/2004 | WO2004040834A2 Iterative channel estimation in multicarrier receivers |
| 05/13/2004 | WO2004040832A1 Transmitting device and transmitting method |
| 05/13/2004 | WO2004040816A1 Synchronous follow-up device and method |
| 05/13/2004 | WO2004040815A1 Multi-carrier communication method and multi-carrier communication method |
| 05/13/2004 | WO2004040806A1 Amplitude and phase matching for layered modulation reception |
| 05/13/2004 | WO2004040403A2 Lower complexity layered modulation signal processor |
| 05/13/2004 | WO2004025885A3 Apparatus and method, improving output signal from nonlinear device through dynamic signal pre-distortion based upon lagrange interpolation |
| 05/13/2004 | WO2003107614A3 System and method for applying transmit windowing in adsl+ networks |
| 05/13/2004 | WO2003096524A3 Mirror suppression circuit in a quadrature demodulator |
| 05/13/2004 | WO2003069772A3 Digital modulator |
| 05/13/2004 | WO2003047088A3 Frequency modulator using switched capacitors |
| 05/13/2004 | US20040093545 Method and apparatus for scrambling based peak-to-average power ratio reduction without side information |
| 05/13/2004 | US20040092241 Local oscillator using I/Q mismatch compensating circuit through LO path receiver using thereof |
| 05/13/2004 | US20040092240 Phase detection circuit and receiver |
| 05/13/2004 | US20040091066 Apparatus and method for a carrier recovery |
| 05/13/2004 | US20040091063 Single clock data communication in direct stream digital system |
| 05/13/2004 | US20040091061 Enhanced wireless communication system and method thereof |
| 05/13/2004 | US20040091060 Architecture for universal modulator |
| 05/13/2004 | US20040091059 Layered modulation for terrestrial ATSC applications |
| 05/13/2004 | US20040091058 QAM receiver and method for constellations having at least sixteen symbols |
| 05/13/2004 | US20040091057 Receiving apparatus in OFDM transmission system |
| 05/13/2004 | US20040091055 Digital transmission system using non-orthogonal matrices |
| 05/13/2004 | US20040091031 Integrated modulators and demodulators |
| 05/13/2004 | US20040091026 Circuit for detecting a shifted frequency, a method for detecting a shifted frequency and portable communication apparatus |
| 05/13/2004 | US20040090997 Digital transmission system with enhanced data multiplexing in VSB transmission system |
| 05/13/2004 | US20040090977 Synchronization detection apparatus and method based on orthogonal frequency division multiplexing |
| 05/13/2004 | US20040090952 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones |
| 05/13/2004 | US20040090939 High rate, time division multiplexed, multi-MPSK MODEM with imbedded high signal-to-noise ratio tracking channel |
| 05/13/2004 | US20040090933 Scalable communication system using overlaid signals and multi-carrier frequency communication |
| 05/13/2004 | US20040090909 Frequency modulator using a waveform generator |
| 05/13/2004 | US20040090865 Underwater communication system |
| 05/13/2004 | US20040090283 Amplitude limiting apparatus and multi-carrier signal generating apparatus |
| 05/13/2004 | DE19933485B4 Leitungsabschlußeinrichtung für eine Telefon-Teilnehmeranschlußleitung Line termination device for a telephone subscriber line |
| 05/13/2004 | DE10257442A1 Schaltungsanordnung zur Analog-digital-Wandlung einer durch Wechsel der Amplitude zwischen einem niedrigen und einem hohen Pegel (ASK-) modulierten Spannung Circuit arrangement for analog-to-digital conversion of a by changing the amplitude between a low and a high level (ASK) modulated voltage |
| 05/13/2004 | DE10251176A1 Anordnung und Verfahren für eine Trägerrückgewinnung Apparatus and method for carrier recovery |
| 05/13/2004 | DE10249492A1 Verfahren und Schaltung zur Erzeugung eines Hilfssymbols zum Einregeln eines QAM-Demodulators Method and circuit for generating an auxiliary symbol for adjusting a QAM demodulator |
| 05/12/2004 | EP1418724A1 Method and modem for synchronisation and phase tracking |
| 05/12/2004 | EP1418723A1 Method of modulating a binary data stream |
| 05/12/2004 | EP1418722A2 Modulator architecture which can produce a number of different waveforms |
| 05/12/2004 | EP1418720A1 Receiving apparatus in OFDM transmission system |
| 05/12/2004 | EP1418694A2 BIT processing method for adaptive multirate modulation |
| 05/12/2004 | EP1417780A1 Transmit diversity wireless communication |
| 05/12/2004 | EP1012729A4 A modem implemented in software for operation on a general purpose computer in a non-real-time environment |
| 05/12/2004 | EP0864216B1 Filtering in a receiver that uses log-polar signal processing |
| 05/12/2004 | EP0743768B1 Device and method for multiplexing signal |
| 05/12/2004 | CN1496640A Signal processing apparatus and signal processing method |
| 05/12/2004 | CN1496639A Method for extablishing data transmission connection between XDSL transceivers |
| 05/12/2004 | CN1496638A Transmission apparatus, reception apparatus, transmission method ad reception method |
| 05/12/2004 | CN1496625A Multiplexing method in multicarrier transmit diversity system |
| 05/12/2004 | CN1496622A Method for extracting variable reference pattern |
| 05/12/2004 | CN1496158A Equpment for detecting power ratio between service channel and pilot channel and its method |
| 05/12/2004 | CN1496077A Correction of amplitude and unbalance in phase in phase-shift keying receiver |
| 05/12/2004 | CN1496045A Multiple four-phase sequence method for producing code-division multiple address communication system and its equipment |
| 05/12/2004 | CN1496037A Multicarrier transmission method and equipment |
| 05/12/2004 | CN1496036A Frequency division multiplexing transmission digital signal through orthoganal |
| 05/12/2004 | CN1496035A Digital broadcasting demodulator |
| 05/12/2004 | CN1496034A AM and digital coexisting broadcasting method and device |
| 05/12/2004 | CN1496023A Interleaved/deinterleaved equipment and method for communication system |
| 05/12/2004 | CN1496015A Regulating method for signal receiver and relevant receiver |
| 05/12/2004 | CN1496013A Optimum identification method of signal body decision identification device and its device |
| 05/12/2004 | CN1149805C Phase error detector for QAM receiver |
| 05/12/2004 | CN1149803C Data retransmission method based on bit coversion |
| 05/12/2004 | CN1149802C Method and apparatus for coherent communication reception in a spread-spectrum commuincation system |
| 05/12/2004 | CN1149801C Sampling of compensating receiver and local oscillator freuqency offest method and synchronous method |
| 05/12/2004 | CN1149800C Dummy error addition circuit |
| 05/12/2004 | CN1149799C Radio communication receiver |
| 05/12/2004 | CN1149791C Data communication device, interface, modem and method |
| 05/12/2004 | CN1149753C Receiving device and method of generating replica signal |
| 05/12/2004 | CN1149744C Device and method for linearizing transmitter in digital communication system |
| 05/12/2004 | CN1149742C Multivalued FSK demodulation window comparator |
| 05/12/2004 | CN1149734C Frequency-stabilized receiver/transmitter circuit arrangement |
| 05/11/2004 | USRE38513 Communication system |
| 05/11/2004 | US6735425 Telephone with a demodulator circuit with an improved local oscillator |
| 05/11/2004 | US6735422 Calibrated DC compensation system for a wireless communication device configured in a zero intermediate frequency architecture |
| 05/11/2004 | US6735264 Compensation for non-linear distortion in a modem receiver |
| 05/11/2004 | US6735263 Digital coherent envelope demodulation of FDMA signals |
| 05/11/2004 | US6735262 Apparatus and method of decision-directed carrier recovery based on LMS method |
| 05/11/2004 | US6735261 Calibration of a N-port receiver |
| 05/11/2004 | US6735260 Adaptive data slicer |
| 05/11/2004 | US6735259 Method and apparatus for optimization of a data communications system using sacrificial bits |
| 05/11/2004 | US6735258 Moderate rate phase shift keying codec |
| 05/11/2004 | US6735256 Radio communication system, radio communication method, radio base station, and radio terminal station |
| 05/11/2004 | US6735255 Correlation based method of determining frame boundaries of data frames that are periodically extended |
| 05/11/2004 | US6735247 Method and apparatus in a communication system |
| 05/11/2004 | US6735246 Integrated modem and line-isolation circuitry with data flow control and associated method |
| 05/11/2004 | US6735238 Ultra wideband communication system, method, and device with low noise pulse formation |
| 05/11/2004 | US6735221 Communication network system |
| 05/11/2004 | US6735188 Channel encoding and decoding method and apparatus |
| 05/11/2004 | US6735028 Method and apparatus for increasing data storage capacity via phase and amplitude modulation |
| 05/11/2004 | CA2319326C Automatic gain-controlled vhf/uhf antenna tuning apparatus |
| 05/11/2004 | CA2298567C Broadband transmitter for a signal consisting of a plurality of digitally modulated carriers |
| 05/11/2004 | CA2290862C A frequency/phase comparison circuit with gated reference and signal inputs |
| 05/11/2004 | CA2281480C Two dimensional interleave process for cdma transmissions of one dimensional timeslot data signal |
| 05/08/2004 | CA2448837A1 Process and modem for phase synchronization and tracking |
| 05/06/2004 | WO2004039096A1 Method and apparatus for dtmf detection and voice mixing in the celp parameter domain |
| 05/06/2004 | WO2004039028A2 Quadrature mismatch compensation |
| 05/06/2004 | WO2004039027A2 Multicarrier transmission using a plurality of symbol lengths |
| 05/06/2004 | WO2004039026A1 Apparatus and method for generating a preamble sequence in an ofdm communication system |
| 05/06/2004 | WO2004039024A1 A peak-to-average power ratio modifier |
| 05/06/2004 | WO2004039022A2 Correction for differences between downlink and uplink channel responses |