Patents for H04L 27 - Modulated-carrier systems (89,721)
02/2002
02/27/2002EP0765549B1 Ofdm signal organized so as to simplify reception
02/27/2002CN2479689Y Radio-frequency device
02/27/2002CN1338162A Communication terminal and wireless communication method
02/27/2002CN1338154A Hardware-efficient transceiver with Delta-Sigma digital-to-analog converter
02/27/2002CN1337787A Receiving apparatus and integrated circuit for receiving
02/27/2002CN1080053C Method and apparatus for digital combination of channel information in DS-CDMA communication system
02/27/2002CN1080052C System for acquisition of carrier phase and symbol timing received from communication signals
02/27/2002CN1080051C Precise detection method and apparatus of frequency error
02/27/2002CN1080035C Modulation-demodulation signal transmitter, transmitting method and its transmitting system
02/27/2002CN1080031C Local oscillator phase noise cancelling modulation technique
02/27/2002CN1080030C Improved ADSL compatible discrete multi-tone apparatus
02/27/2002CN1080025C Digital calibration of a transceiver
02/26/2002US6351677 Method and device in a telecommunication system
02/26/2002US6351631 Carrier generations facility for a digital MPX-signal demodulation micronas intermetall GMBH
02/26/2002US6351509 Method and apparatus for reducing power consumption of digital subscriber line modems
02/26/2002US6351503 Threshold extension block phase estimator for quasi-coherent communications systems
02/26/2002US6351498 Robust digital modulation and demodulation scheme for radio communications involving fading
02/26/2002US6351497 Communication system
02/26/2002US6351473 Method to allocate data bits, multi-carrier transmitter and receiver using the method, and related allocation message generator
02/26/2002US6351293 Decision directed phase detector
02/26/2002US6351290 Television receiver with separate I-F amplifiers for VSB and QAM digital TV signals that are digitally synchrodyned
02/26/2002US6351185 Increased output swing line drivers for operation at supply voltages that exceed the breakdown voltage of the integrated circuit technology
02/26/2002CA2208276C Multiband mobile unit communication apparatus
02/21/2002WO2002015508A1 Frequency and time synchronisation of an ofdm receiver by means of maximum likelihood decoding
02/21/2002WO2002015507A1 Method and apparatus for reducing multi-carrier signals ratio of peak power to average power
02/21/2002WO2002015502A2 Adaptive linear equalisation for walsh-modulated
02/21/2002WO2002015443A1 System and method for huffman shaping in a data communication system
02/21/2002WO2002015425A1 Method and apparatus for a software configurable wireless modem adaptable for multiple modes of operation
02/21/2002WO2002015387A2 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
02/21/2002WO2002015384A1 Method and apparatus for a frequency agile variable bandwidth transceiver
02/21/2002WO2002013593A2 Distributed architecture wireless rf modem
02/21/2002WO2001089103B1 Digital waveform generator apparatus and method therefor
02/21/2002WO2001063792A3 Apparatus for linear transmitter with improved loop gain stabilization
02/21/2002US20020023247 System for transmitting information codes with multi-level modulation scheme and a modulation apparatus
02/21/2002US20020021773 Diversity receiver
02/21/2002US20020021769 Receiving device and integrated circuit for reception
02/21/2002US20020021764 Multi-frequency transmitter using predistortion and a method of transmitting
02/21/2002US20020021750 Method and apparatus for selective equalizer tap initialization in an OFDM system
02/21/2002US20020021715 Frequency tracking device for a receiver of a multi-carrier communication system
02/21/2002US20020021686 System for using rapid acquisition spreading codes for spread-spectrum communications
02/21/2002US20020021683 Method and apparatus for reducing amplitude variations and interference in communication signals, such as in wireless communication signals employing inserted pilot symbols
02/21/2002US20020021679 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
02/21/2002US20020021475 Optical signal receiver and optical space transmission system
02/21/2002US20020021165 Device and method for recovering frequency redundant data in a network communications receiver
02/21/2002DE10038681A1 Demodulationsverfahren und Demodulator für CPFSK-modulierte Signale A demodulating method and demodulator for CPFSK-modulated signals
02/21/2002DE10037996A1 Elektronisches Gerät, insbesondere Feldgerät Electronic device, in particular field device
02/20/2002EP1180884A2 QAM receiver with gain control, dc-offset correction, and passband equalisation
02/20/2002EP1180867A1 Signal processor for multiplex communication system and signal processing method therefor
02/20/2002EP1180853A1 Method and apparatus for automatic frequency control and demodulator
02/20/2002EP1180851A2 COFDM tuner with impulse noise reduction
02/20/2002EP1180302A1 Electronic inductor with transmit signal telephone line driver
02/20/2002CN1337125A Method for implementing multipoint codes in an exchange
02/20/2002CN1337088A Multi-frequency transmitter using predistortion and a method of transmitting
02/20/2002CN1336762A Multiple module device having static characters
02/20/2002CN1336749A Frequency multiple program for OFDM system
02/20/2002CN1336737A Method and system for processing orthogonal frequency-division multiplex singal
02/20/2002CN1336723A Self-adaptive distortion compensation arrangement
02/20/2002CN1336721A Method and device for detecting weak signal of known frequency
02/20/2002CN1079620C Signal processing system
02/20/2002CN1079619C Phase error detecting method and phase tracking loop circuit
02/20/2002CN1079615C Code acquisition in CDMA communication system using multiple Walsh channel
02/19/2002US6349120 Method for improving spectral sampling using sub-burst discreet fourier transforms
02/19/2002US6349111 Circuit for allocating a transmission channel on the electric network
02/19/2002US6348876 Burst QAM downhole telemetry system
02/19/2002CA2263244C Digital qam modulator using post filtering carrier recombination
02/19/2002CA2231226C Single tone signal detector
02/19/2002CA2222462C Method and apparatus for a unique word differential detection and demodulation using the unique word differential detection
02/19/2002CA2192605C Modulating array transmitter
02/19/2002CA2149295C Synchronizing signal detection apparatus
02/19/2002CA2119986C Measuring-while-drilling telemetry apparatus and method
02/14/2002WO2002013570A1 Communication terminal, base station device, and radio communication method
02/14/2002WO2002013493A1 Dynamically reconfigurable universal transmitter system
02/14/2002WO2002013476A1 System and method for fast code phase and carrier frequency acquisition in gps receiver
02/14/2002WO2002013473A1 Apparatus for reducing dc offset in a receiver
02/14/2002WO2002013432A1 Phase shift keyed signaling with forward error correction and raman amplification in optical wdm links
02/14/2002WO2002013418A1 Flexible tdma system architecture
02/14/2002WO2002013397A2 Constrained-envelope transmitter and method therefor
02/14/2002WO2002013370A2 Frequency translator using a cordic phase rotator
02/14/2002WO2002013369A1 Frequency modulator using a waveform generator
02/14/2002WO2002013160A2 Electronic device, especially a field device
02/14/2002WO2001043415A3 Method for reducing noise from an asymmetric digital subscriber line modem
02/14/2002US20020018534 Multiplier arrangement, signal modulator and transmitter
02/14/2002US20020018532 Method for detection of pilot tones
02/14/2002US20020018531 Correction of DC-offset of I/Q modulator
02/14/2002US20020018528 Receiver, receiving method, and recording medium which records program for receiving data signals
02/14/2002US20020018527 Dynamic link assignment in a communication system
02/14/2002US20020018518 Generic finger architecture for spread spectrum applications
02/14/2002US20020017950 Demodulation method and demodulator
02/14/2002US20020017948 Demodulation method and apparatus
02/14/2002DE10041068A1 Device for dynamic bit allocation for wired multi-bearer systems has noise variance estimator(s) driving bit loader depending on noise variance estimated from input data value
02/14/2002DE10036682A1 System for level matching between circuit modules has an interface circuit between modules with low pass circuit with potential divider for matching first module's output level to other module
02/14/2002CA2419063A1 Frequency translator using a cordic phase rotator
02/14/2002CA2418855A1 System and method for fast code phase and carrier frequency acquisition in gps receiver
02/13/2002EP1179937A1 Signal transmission apparatus
02/13/2002EP1179936A1 Demodulator for CPFSK signals using a linear approximation of the CPFSK signal
02/13/2002EP1179934A1 Adaptive turbo-equalization
02/13/2002EP1179911A1 Quality assessment method for a radio link in a mobile radio communications system
02/13/2002EP1179904A1 Radio communication apparatus and radio communication method
02/13/2002EP1179903A1 Communication apparatus and communication method
02/13/2002EP1179902A1 Transmitter, receiver, and method of data transmission