| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 01/02/2001 | CA2276883A1 Non-linear predistortion and upconversion system |
| 01/02/2001 | CA2189343C Method and apparatus for offset frequency estimation for a coherent receiver |
| 01/02/2001 | CA2187645C Tx preemphasis filter and tx power control based high speed two-wire modem |
| 01/02/2001 | CA2087527C Method and apparatus for mappping an eight dimensional constellation of a convolutionally coded communication system |
| 12/29/2000 | CA2312531A1 Broadcast receiver |
| 12/28/2000 | WO2000079754A1 Phase error detector for a quadrature amplitude modulated (qam) receiver |
| 12/28/2000 | WO2000079753A1 Methods and apparatus for use in obtaining frequency synchronization in an ofdm communication system |
| 12/28/2000 | WO2000079752A1 Apparatus and method for synchronization in a multicarrier communication system by observing a phase-frequency relationship of a plurality of pilot signals |
| 12/28/2000 | WO2000079751A1 Apparatus and method for synchronization in a multiple-carrier communication system by observing energy within a guard band |
| 12/28/2000 | WO2000079750A1 Apparatus and method for synchronization in a multiple-carrier communication system by observing a plurality of synchronization indicators |
| 12/28/2000 | WO2000079749A1 Methods and apparatus for use in obtaining frequency synchronization in an ofdm communication system |
| 12/28/2000 | WO2000079748A1 Automatic gain control for ofdm receiver |
| 12/28/2000 | WO2000079747A1 System and method for data scrambling to reduce the crest factor in an ofdm waveform |
| 12/28/2000 | WO2000079746A1 Companion nyquist filter and linear equalizer within a data transmission system |
| 12/28/2000 | WO2000079717A1 Communication system and communication method |
| 12/28/2000 | WO2000079712A1 Method and apparatus for determining transmission mode and synchronization for a digital audio broadcasting signal |
| 12/28/2000 | WO2000079679A1 Device and method for predistorting a transmission signal to be transmitted via a nonlinear transmission path |
| 12/28/2000 | DE19928497A1 Receiving digital radio signals over radio channels involves deriving digital filter coefficients using reference signal, deriving channel transfer function for useful signal using filter |
| 12/28/2000 | DE19927290A1 Carrier modulation device for digital communications systems and especially for mobile radio applications |
| 12/28/2000 | DE19927090A1 Verfahren zum Übertragen von analogen Informationssignalen A method for transmitting analog information signals |
| 12/28/2000 | DE10025237A1 Verfahren und Vorrichtung für zeitgleiche Synchronisation und verbesserte automatische Frequenznachführung in einer Kommunikationsvorrichtung Method and apparatus for simultaneous synchronization and improved automatic frequency control in a communication device |
| 12/28/2000 | DE10023734A1 Quadrature demodulator, adds user signal to pseudo=noise giving pseudo=noise superimposed signal, mixes this with local signal giving converted signal, multiplies this with pseudo=noise giving correlated signal, then integrates |
| 12/28/2000 | DE10019457A1 Phasenschwankungs-Erzeugungsschaltung und Phasenschwankungs-Erzeugungsverfahren Phase jitter generation circuit and phase jitter generation method |
| 12/28/2000 | CA2374212A1 Method and apparatus for determining transmission mode and synchronization for a digital audio broadcasting signal |
| 12/28/2000 | CA2336686A1 Communication device and communication method |
| 12/27/2000 | EP1063826A1 Carrier recovery means in digital quadrature receivers |
| 12/27/2000 | EP1063825A2 Predistortion system for linearising power amplifiers |
| 12/27/2000 | EP1063824A2 Symbol synchronisation in multicarrier receivers |
| 12/27/2000 | EP1063823A2 Data reproducing apparatus for portable telephone set |
| 12/27/2000 | EP1063808A2 Method and device of generation of one reference event from a frame of information |
| 12/27/2000 | EP1063780A2 Spread spectrum channel estimation sequences |
| 12/27/2000 | EP1063779A2 Reverse spreading device, timing detecting device, channel estimating device, frequency error measurement method and automatic frequency control method |
| 12/27/2000 | EP1062783A2 Off-line broadband network interface |
| 12/27/2000 | EP1062781A1 Quadrature receiver, communication system, signal processor, method of calculating direct current offset, and method of operating a quadrature receiver |
| 12/27/2000 | EP1062760A1 Improvements in, or relating to, vdsl |
| 12/27/2000 | EP1062731A1 Digital signal modulation system |
| 12/27/2000 | EP1062444A1 Improved flexible wedge gate valve |
| 12/27/2000 | CN1278379A Method for demodulating information in a communication system that supports multiple modulation schemes |
| 12/27/2000 | CN1278127A Orthogonal frequency-division multiplex demodulation device, and demodulation method |
| 12/27/2000 | CN1059992C Carrier independent timing recovery system for vestigial sideband modulated signal |
| 12/26/2000 | US6167241 Technique for performing amplitude modulation without cheating side-bands |
| 12/26/2000 | US6167121 Modem apparatus |
| 12/26/2000 | US6167102 System and method employing a reduced NCO lookup table |
| 12/26/2000 | US6167099 Multi-channel digital transceiver and method |
| 12/26/2000 | US6167096 Transmitting circuit for use in code-division multiple access system and frequency-division multiple access system |
| 12/26/2000 | US6167095 Method and apparatus for variably allocating upstream and downstream communication spectra |
| 12/26/2000 | US6167031 Method for selecting a combination of modulation and channel coding schemes in a digital communication system |
| 12/26/2000 | US6166774 Combining NTSC visual and aural signals with DTV signals |
| 12/26/2000 | US6166667 Selection of turbo or non-turbo error correction codes based on data type or length |
| 12/26/2000 | US6166622 Time slot structure for improved TPC estimation in WCDMA |
| 12/26/2000 | US6166598 Power amplifying circuit with supply adjust to control adjacent and alternate channel power |
| 12/26/2000 | CA2208453C Balanced modulator |
| 12/26/2000 | CA2034886C Rf signal synthesis |
| 12/21/2000 | WO2000078029A1 Low-rate speech coder for non-speech data transmission |
| 12/21/2000 | WO2000078013A1 Loop driver for pots, xdsl, or integrated pots/xdsl interface |
| 12/21/2000 | WO2000077997A1 System of digital phase and amplitude modulation (psk/ask) |
| 12/21/2000 | WO2000077994A1 Method for symbol-spaced estimation and/or tracking of a fractionally-spaced fading radio channel |
| 12/21/2000 | WO2000077969A1 Method and system for generating a power control metric in an orthogonal transmit diversity communication system |
| 12/21/2000 | WO2000077961A1 Apparatus and method for achieving symbol timing and frequency synchronization to orthogonal frequency division multiplexing signal |
| 12/21/2000 | WO2000077952A1 Receiver for two orthagonally polarised signals |
| 12/21/2000 | WO2000077945A2 A method for determining the channel gain between emitters and receivers |
| 12/21/2000 | WO2000048346A3 A non-coherent, non-data-aided pseudo-noise synchronization and carrier synchronization for qpsk or oqpsk modulated cdma system |
| 12/21/2000 | DE19928206A1 Detector for phase errors in a QAM receiver generates a phase correction signal allowing a phase response to have a finite rate of rise in an angular range around a latching point and no undesirable resets. |
| 12/21/2000 | DE19927320A1 Verfahren zur drahtlosen elektromagnetischen Übertragung von Daten Method for wireless transmission of electromagnetic data |
| 12/21/2000 | DE10021346A1 Semiconducting component has HF distortion correction device that recovers lost HF components of input data depending on restoration clock signals, outputs recovered input data |
| 12/20/2000 | EP1061706A1 System of digital phase and amplitude modulation (PSK/ASK) |
| 12/20/2000 | EP1061705A1 Optimized synchronization preamble structure for OFDM system |
| 12/20/2000 | EP1061704A1 Fast Fourier transform method and apparatus for OFDM demodulation |
| 12/20/2000 | EP1061690A2 Method of transmission on a plurality of carrier signals |
| 12/20/2000 | EP1061687A1 Adaptation of guard interval lengths in an OFDM communication system |
| 12/20/2000 | EP1061660A1 N-port receiver with RF/LO isolation |
| 12/20/2000 | EP1061648A1 Method for wireless electromagnetic transmission of data |
| 12/20/2000 | EP1061643A2 Receiver and gain control method of the same |
| 12/20/2000 | EP1060603A1 System and method for spectrally efficient transmission of digital data over optical fiber |
| 12/20/2000 | EP1060602A1 Method for reducing peak values in single-carrier modulated or multi-carrier modulated digital transmitter signals |
| 12/20/2000 | EP1060601A1 Demodulator having rotation means for frequency offset correction |
| 12/20/2000 | EP1060600A1 Wireless communication system |
| 12/20/2000 | EP1060572A1 Method and apparatus for downconverting signals transmitted using a plurality of modulation formats to a common intermediate frequency range |
| 12/20/2000 | EP1060571A1 METHOD AND APPARATUS FOR CLOCK TIMING RECOVERY IN $g(x)DSL, PARTICULARLY VDSL MODEMS |
| 12/20/2000 | EP1060568A1 Apparatus, system, and method for improving the dynamic range of a receiver in the presence of a narrowband interfering signal |
| 12/20/2000 | EP1060564A1 Interleaving/deinterleaving device and method for communication system |
| 12/20/2000 | CN1277765A A method for selecting a link protocol for a transparent data service in digital communications system |
| 12/20/2000 | CN1277764A A method for selecting a combination of modulation and channel coding schemes in a digital communication system |
| 12/20/2000 | CN1277757A AFC device and method of controlling reception frequency in a dual-mode terminal |
| 12/20/2000 | CN1277695A System for the transmission of data from a data carrier to a station by means of at least one other auxiliary carrier signal |
| 12/20/2000 | CN1277526A Apparatus and method for modulating data information using orthogonal variable extended system digit code |
| 12/20/2000 | CN1277510A Baseband signal off-centre correcting circuit and method and its frequency shift keying receiving equipment |
| 12/20/2000 | CN1277504A Communication receiver for detecting data from receipt signal and its method |
| 12/19/2000 | US6163685 Receiver with controllable amplifier means |
| 12/19/2000 | US6163579 Broadband modem transformer hybird |
| 12/19/2000 | US6163570 Methods and apparatus for verifying transmit power levels in a signal point limited transmission system |
| 12/19/2000 | US6163569 Split-architecture modem |
| 12/19/2000 | US6163548 Code synchronization unit and method |
| 12/19/2000 | US6163276 System for remote data collection |
| 12/19/2000 | US6163231 Millimeter wave modulator and transmitter |
| 12/19/2000 | US6163230 Phase-shift keying electronic circuit with distributed structure |
| 12/19/2000 | US6163229 Frequency generator for generating two independent FSK signals |
| 12/19/2000 | US6163208 One bit digital phase shift keyed carrier recovery and demodulator circuit |
| 12/19/2000 | CA2073918C Method and apparatus for updating coefficients in a complex adaptive equalizer |
| 12/17/2000 | CA2311878A1 Baseband predistortion system for linearising power amplifiers |