Patents for H04L 27 - Modulated-carrier systems (89,721)
12/2007
12/26/2007CN101093253A Modulation signals for a satellite navigation system
12/26/2007CN100358325C Apparatus for receiving and recovering frequency shift keyed symbols
12/26/2007CN100358324C Data equalization method for burst communication
12/26/2007CN100358271C AM and digital coexisting broadcasting method and device
12/26/2007CN100358259C Site diversity method, method for feceiving digital satellite broadcast, and receiver for digital satellite broadcast
12/26/2007CN100358251C QAM with quantised power
12/26/2007CN100358248C System and method for post filtering peak power reduction in communications systems
12/25/2007USRE39956 Communication system
12/25/2007US7313400 Radio communication device and method thereof
12/25/2007US7313209 Method and arrangement to synchronize a multi-carrier transmission system
12/25/2007US7313206 Modified branch metrics for processing soft decisions to account for phase noise impact on cluster variance
12/25/2007US7313205 Method and apparatus for frequency correction in wireless local area network systems
12/25/2007US7313204 Method and device for transmitting and identifying a modulation type in digital communication systems by way of a phase rotation factor applied to a training sequence
12/25/2007US7313203 Method and system for estimating and compensating IQ imbalance
12/25/2007US7313202 Asynchronous serial data receiver for packet transfer
12/25/2007US7313201 Multi-range transconductor and method of operation
12/25/2007US7313200 Radio frequency communications systems and methods employing single and multiple sinewave modulation and demodulation techniques
12/25/2007US7313199 Power amplifier linearization
12/25/2007US7313198 Self calibrating transmit path correction system
12/25/2007US7313195 PAPR reduction method using bit reallocation
12/25/2007US7313193 Multi–tone signal transmission methods and apparatus
12/25/2007US7313191 Receiver device of communication system
12/25/2007US7313190 Efficient bit interleaver for a multi-band OFDM ultra-wideband system
12/25/2007US7313189 Receiver which demodulates OFDM symbol
12/25/2007US7313188 Subcarrier time offsets for improved peak-to-average power of a transmitter
12/25/2007US7313175 Method for avoiding interference radiation of AM transmitters used in digital transmission
12/25/2007US7313174 Method for extracting a variable reference pattern
12/25/2007US7313130 Spectrally compatible mask for enhanced upstream data rates in DSL systems
12/25/2007US7313125 OFDM demodulation method and semiconductor integrated circuit device
12/25/2007US7313122 Multi-user carrier frequency offset correction for CDMA systems
12/25/2007US7313086 OFDM receiver, semiconductor integrated circuit and OFDM method for receiving a signal
12/25/2007US7313085 Method for creating symmetric-identical preamble and method for synchronizing symbol and frequency of orthogonal frequency division multiplexed signals by using symmetric-identical preamble
12/21/2007WO2007147121A2 Multiplexing of information streams
12/21/2007WO2007146930A2 Reverse link pilot transmission for a wireless communication system
12/21/2007WO2007146713A1 Doppler frequency determination for mobile wireless devices
12/21/2007WO2007146711A1 Multiband antenna array using electromagnetic bandgap structures
12/21/2007WO2007146691A2 System and method for providing a transmitter for polar modulation and power amplifier linearization
12/21/2007WO2007146182A2 Modulation of a carrier radio signal by a mobile terminal in a wireless telecommunications network
12/21/2007WO2007145660A1 Orthogonal frequency division multiplexing using subsymbol processing
12/21/2007WO2007145634A1 Multiple resolution mode orthogonal frequency division multiplexing system and method
12/21/2007WO2007145492A2 Encoding uplink acknowledgments to downlink transmissions
12/21/2007WO2007144037A2 System for calibrating at least one quadrature modulator and operating method therefor
12/21/2007WO2007127250A3 Ofdma based on cognitive radio
12/21/2007WO2007109679A3 Uplink channel estimation using a signaling channel
12/21/2007WO2007107821A3 Amended control for resource allocation in a radio access network
12/21/2007WO2007100480A3 A welding-type system with power source and remote device connected through a weld cable using binary phase shift keying for transmitting commands over the weld cable; a method of remotely controlling such power source using such transmitting phase shift keying
12/21/2007WO2007094832A3 Recursive and trellis-based feedback reduction for mimo-ofdm with rate-limited feedback
12/21/2007WO2006050515A3 Ultrawideband cmos transceiver
12/21/2007CA2655452A1 Programmable transmitter architecture for non-constant and constant envelope modulation
12/21/2007CA2652896A1 Reverse link pilot transmission for a wireless communication system
12/21/2007CA2652695A1 Fast in-phase and quadrature imbalance calibration
12/20/2007US20070291880 Radio receiver and a method thereof
12/20/2007US20070291879 Demodulation circuit and electronic device
12/20/2007US20070291878 Digital broadcasting receiver having destination arrival information notification function and notification method using the same
12/20/2007US20070291876 System for high definition radio blending
12/20/2007US20070291875 Polar transmitter for increasing modulation rate using multi-phase generator
12/20/2007US20070291874 Method and apparatus for modulating digital signal using equilateral triangular constellation
12/20/2007US20070291873 Transmitter Apparatus and Wireless Communication Apparatus
12/20/2007US20070291870 Communications systems
12/20/2007US20070291869 Wireless communication system and method
12/20/2007US20070291865 Radio Broadcasting Method and Transmitter Using Pre-Filtering and Corresponding Signal
12/20/2007US20070291863 Digital branch calibrator for an rf transmitter
12/20/2007US20070291862 Method and device for synchronisation in ofdm
12/20/2007US20070291860 Recursive Sequence Generation For Selected Mapping In Multi-Carrier Systems
12/20/2007US20070291859 Past presence hints
12/20/2007US20070291639 Apparatus and methods for communicating using symbol-modulated subcarriers
12/20/2007DE19955564B4 W-CDMA Analysevorrichtung und Verfahren zur Anzeige der Ergebnisse der W-CDMA Analyse und Speichermedium mit einem Programm zur Anzeige der Ergbnisse der W-CDMA Analyse W-CDMA analysis apparatus and method for displaying the results of the W-CDMA analysis and storage medium having a program for displaying the result list of the W-CDMA analysis
12/20/2007DE102006038857A1 Funksender Radio stations
12/20/2007DE102006025436A1 Verfahren und Vorrichtung zur Erzeugung Frequenz- und/oder phasenmodulierter Signale Method and apparatus for generating frequency and / or phase-modulated signals
12/19/2007EP1868340A1 Order calculation method in a quadrature amplitude modulation receiver
12/19/2007EP1868339A1 Orthogonal frequency division multiplex transmission method
12/19/2007EP1868338A1 Orthogonal frequency division multiplex transmission method
12/19/2007EP1868337A1 Orthogonal frequency division multiplex transmission method
12/19/2007EP1868336A2 transmitter and transmission method
12/19/2007EP1868306A2 Wireless data communication apparatus and method using an UWB pulse sequence
12/19/2007EP1868302A1 Orthogonal frequency division multiplex transmission method
12/19/2007EP1868135A1 System and method for privilege management and revocation
12/19/2007EP1867125A1 Transmission methods and apparatus combining pulse position modulation and hierarchical modulation
12/19/2007EP1867124A1 Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
12/19/2007EP1867123A2 Signal transmitter for wideband wireless communication
12/19/2007EP1867122A2 Agc with integrated wideband interferer detection
12/19/2007EP1867121A1 Demodulation and amplification regulation concept, in particular for ir receivers
12/19/2007EP1867085A1 Methods and systems for transmission of orthogonal frequency division multiplexed symbols
12/19/2007EP1867084A1 Systems and methods for ofdm channelization
12/19/2007EP1867063A1 Pilot transmission and channel estimation for a communication system utilizing frequency division multiplexing
12/19/2007EP1867055A2 Separation of cochannel fm signals
12/19/2007EP1866794A1 Partial fft processing and demodulation for a system with multiple subcarriers
12/19/2007EP1866765A2 An operational state transition and event logging system for an rf transmitter
12/19/2007EP1866740A2 Methods and apparatuses of measuring impulse noise parameters in multi-carrier communication systems
12/19/2007EP1805958B1 Arrangement for the synchronous emission of analog signals produced in at least two digital/analog converters
12/19/2007EP1683316B1 Apparatus for determining a frequency offset error and receiver based thereon
12/19/2007EP1673914A4 Dual phase pulse modulation encoder circuit
12/19/2007EP1629545A4 Ultra-wideband communication system and method
12/19/2007EP1330905B1 Modulator with low sensitivity to amplitude and phase errors of the carrier signal
12/19/2007CN101091368A Method and apparatus for transmitting/receiving a signal in an ffh-ofdm communication system
12/19/2007CN101091367A Transmitter apparatus
12/19/2007CN101091366A Reduced parallel and pipelined high-order mimo lmmse receiver architecture
12/19/2007CN101090386A Block transmission system frequency field demodulation device based on filter set and its method
12/19/2007CN101090385A SD/FD dispatching method and device
12/19/2007CN101090384A Subband dispatching method and device