Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 27 - Modulated-carrier systems
Patents for H04L 27 - Modulated-carrier systems (89,721)
06/2005
06/09/2005US20050123028 Adaptive margin and band control
06/09/2005US20050123027 DSL system estimation and parameter recommendation
06/09/2005US20050123002 Multiple channel system for a twisted pair telephone wire local loop system
06/09/2005US20050122998 MIMO receivers having one or more additional receive paths
06/09/2005US20050122947 Direct-sequence CDMA method and device
06/09/2005US20050122896 Apparatus and method for canceling interference signal in an orthogonal frequency division multiplexing system using multiple antennas
06/09/2005US20050122895 Residual frequency error estimation in an OFDM receiver
06/09/2005DE10251459B4 Verfahren zum Regeln des Eingangssignals eines Kontaktlos-Transponders A method of controlling the input signal of a contactless transponder
06/09/2005CA2547555A1 Method and device for increasing the capacity of non-spread transmission systems
06/08/2005EP1538802A2 Apparatus and method for controlling adaptive modulation and coding in an orthogonal frequency division multiplexing communication system
06/08/2005EP1538801A1 Transceiver unit with carrier re-activation in case of signal to noise ratio improvement
06/08/2005EP1538800A1 Tranceiver and method of echo reduction using power allocation and rate control
06/08/2005EP1538799A2 Phase-locked loop with continuously adjustable bandwidth
06/08/2005EP1538798A2 Wireless commmunication unit, linearised transmitter circuit and method of linearising therein
06/08/2005EP1538773A2 Nonsystematic repeat-accumulate codes for encoding and decoding information in a communication system
06/08/2005EP1538555A2 Transponder having two different modulation methods
06/08/2005EP1537711A1 Preamble for estimation and equalisation of asymmetries between in phase and quadrature branches in multi-carrier transmission systems
06/08/2005EP1537710A1 Iterative estimation and equalisation of asymmetries between inphase and quadrature branches in multi-carrier transmission systems
06/08/2005EP1537709A1 Method for generating i/q signal in a tdma transmitter and corresponding modulator
06/08/2005EP1537686A2 Method for transmitting signals in a radio communication system
06/08/2005EP1537681A1 Device and method for carrying out correlations in a mobile radio system
06/08/2005EP1537679A2 Sub-banded ultra-wideband communication system
06/08/2005EP1537675A1 Method and system for re-modulation using zero if
06/08/2005EP1330885B1 Signal strength compensation for mobile radio channels that considerably vary with time
06/08/2005EP1317829B1 Method for coding and decoding an information symbol
06/08/2005EP1125401B1 Internet gigabit ethernet transmitter architecture
06/08/2005EP1084553A4 Method and apparatus for obtaining initial carrier and symbol phase estimates for use in synchronizing transmitted data
06/08/2005CN1625916A Information notification method, mobile communication system, base station, and mobile station
06/08/2005CN1625876A Method and system for digital data transmission
06/08/2005CN1625862A Reception of multicarrier spread- sprectrum signals
06/08/2005CN1625842A An adaptive threshold algorithm for real-time wavelet de-noising applications
06/08/2005CN1625833A Additive DC component detection included in an input burst signal
06/08/2005CN1625251A Single carrier transmitter with field inserted field synchronizing information and method thereof
06/08/2005CN1625221A Image forming device, pattern forming method and its program
06/08/2005CN1625180A Frame format for high data throughput wireless local area network transmissions
06/08/2005CN1625164A Apparatus and method for transmitting/receiving channel quality information of subcarriers in an orthogonal frequency division multiplexing system
06/08/2005CN1625163A Apparatus and method and for generating an orthogonal frequency division multiplexing (OFDM) frame for wireless communications
06/08/2005CN1625080A Information notification method, mobile communications system, base station and mobile station
06/08/2005CN1625061A 发射机 Transmitter
06/08/2005CN1625060A Signal transmitter
06/08/2005CN1205817C Method for determining parameters of OFDM signal and associated receiver
06/08/2005CN1205794C Apparatus and method for determining a modulation scheme in communication system
06/08/2005CN1205793C Method and appts. for reducing peak to average power ration in digital broadcasting systems
06/08/2005CN1205791C Systems and methods for receiving modulated signal multi-pass demodulation
06/08/2005CN1205773C Method for correcting frequency shift and direct sequence spread spectrum receiver
06/08/2005CN1205771C Transmission circuit
06/08/2005CN1205762C Channel estimate system, channel estimate device and channel estimate method
06/08/2005CN1205757C Apparatus for reducing phase noise in local signal carrier caused by powering down of circuit elements during discontinuous data transmissions
06/07/2005US6904550 Velocity enhancement for OFDM systems
06/07/2005US6904538 System and method for differential data detection
06/07/2005US6904283 Multi-carrier communications with group-based subcarrier allocation
06/07/2005US6904269 Signal type identification
06/07/2005US6904267 Amplifying device
06/07/2005US6904105 Method and implemention of a traceback-free parallel viterbi decoder
06/07/2005US6904104 Technique for demodulating a linear modulated data signal in a communications system
06/07/2005US6904103 Receiving device and integrated circuit for reception
06/07/2005US6904102 Method of, and receiver for, detecting the presence of data
06/07/2005US6904099 Digital modulation signal generator
06/07/2005US6904098 Linear phase robust carrier recovery for QAM modems
06/07/2005US6904097 Method and apparatus for adaptive signaling in a QAM communication system
06/07/2005US6904083 DSL link with embedded control and multi-channel capability
06/07/2005US6904082 DSL rate adaptation
06/07/2005US6903612 Tunable low noise amplifier
06/07/2005US6903603 Phase detection circuit and receiver
06/07/2005CA2206251C Method and apparatus for testing a digital communication channel at variable or fixed data rates
06/02/2005WO2005051010A1 Method and apparatus for mobile radio velocity estimation
06/02/2005WO2005050987A1 Apparatus and method of decision feedback equalization in terrestrial digital broadcasting receiver
06/02/2005WO2005050939A1 Method and system for subcarrier allocation in a communication system
06/02/2005WO2005050938A1 System and method for frequency modulation in a modem
06/02/2005WO2005050890A2 Communication device
06/02/2005WO2005050887A2 Method for configuring uplink frame in ofdma-based wireless communication system
06/02/2005WO2005050885A1 Multi-antenna receiving apparatus, multi-antenna receiving method, multi-antenna transmitting apparatus, and multi-antenna communication system
06/02/2005WO2005050873A1 Method for partitioning resource space, assigning physical channel, and allocating power in ofdma-based cellular system
06/02/2005WO2005050865A2 Coherent tracking for fm iboc receiver using a switch diversity antenna system
06/02/2005WO2005034356A3 Phase-locked loop bandwidth calibration circuit and method thereof
06/02/2005WO2005017640A3 Adaptive coding for a shared data communication channel
06/02/2005WO2005015815A3 Technique to select transmission parameters
06/02/2005WO2004084466A3 Method and apparatus for sub sample-per-symbol demodulator for a spectrally efficient waveform with an lpi feature
06/02/2005US20050120097 Method and apparatus for providing an efficient control channel structure in a wireless communication system
06/02/2005US20050118982 Infinite speed space communications using information globes
06/02/2005US20050118973 Low leakage local oscillator system
06/02/2005US20050118966 Simple Crest Factor reduction technique for multi-carrier signals
06/02/2005US20050118965 Signal transmitter
06/02/2005US20050117681 Timing recovery apparatus and method
06/02/2005US20050117678 Method for resynchronization of a mobile radio receiver in the event of a change over between two different modulation methods
06/02/2005US20050117677 Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration
06/02/2005US20050117674 Apparatus for symbol timing detection for wireless communication system
06/02/2005US20050117672 Method and system for providing low power WLAN receiver
06/02/2005US20050117671 Electric circuit for decoding a two-phase asynchronous data signal and corresponding decoding method, device for controlling equipment
06/02/2005US20050117670 Modified OFDM subcarrier profile
06/02/2005US20050117669 Method to increase performance of secondary data in a hierarchical modulation scheme
06/02/2005US20050117668 Decoder for decoding symmetric/asymmetric delay modulation signal and the method thereof
06/02/2005US20050117667 Ofdm demodulation device
06/02/2005US20050117665 Device and method for determining the deviation of the carrier frequency of a mobile radio device from the carrier frequency of a base station
06/02/2005US20050117663 Chip set for digital audio satellite radio receivers
06/02/2005US20050117658 Ultra wide band pulse train generator
06/02/2005US20050117635 Phase-compensation decision feedback channel equalizer and digital broadcasting receiver using the same
06/02/2005US20050117561 Echo reduction to achieve a requested service
06/02/2005US20050117557 Ultra-wideband communication apparatus and methods
06/02/2005US20050117243 Adaptive equalizer
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