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)
10/2005
10/18/2005US6957044 Satellite communication apparatus
10/18/2005US6956924 Efficient implementation of a decision directed phase locked loop (DD-PLL) for use with short block code in digital communication systems
10/18/2005US6956919 Single clock data communication in direct stream digital system
10/18/2005US6956917 Method and apparatus for reducing interference in an optical data stream using data-independent equalization
10/18/2005US6956916 Delayed decision feedback sequence estimation diversity receiver
10/18/2005US6956914 Transmit amplitude independent adaptive equalizer
10/18/2005US6956911 Receiver
10/18/2005US6956910 Fast transmitter based on table lookup
10/18/2005US6956908 Technique to simultaneously distribute clock signals and data on integrated circuits, interposers, and circuit boards
10/18/2005US6956907 Method and apparatus for determining power allocation in a MIMO communication system
10/18/2005US6956906 Powerline data communication
10/18/2005US6956895 Method and arrangement for reducing frequency offset in a radio receiver
10/18/2005US6956888 Channel estimation in a cellular communication system
10/18/2005US6956814 Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system
10/18/2005US6956812 Reception apparatus
10/18/2005CA2396843C High speed downhole communications network having point to multi-point orthogonal frequency division multiplexing
10/18/2005CA2244382C Apparatus for receiving digital information signals
10/18/2005CA2187753C Improved adsl compatible discrete multi-tone apparatus
10/13/2005WO2005096582A1 Receiver for a multi-carrier signal
10/13/2005WO2005096581A1 Cofdm demodulator with optimal fft analysis window positioning
10/13/2005WO2005096580A1 Peak reduction in ofdm using clipping and modified constellations
10/13/2005WO2005096579A1 Peak reduction in ofdm using clipping and modified constellations
10/13/2005WO2005096578A1 Method and apparatus for use in carrier recovery in a communications system
10/13/2005WO2005096577A1 Method for receiving a signal using a maximum likelihood criterion, receiving device and radiotelephone for carrying out said method
10/13/2005WO2005096576A1 Device and method for generating a base band signal and program causing computer to execute the method
10/13/2005WO2005096539A1 System and method for transmission and reception of qam signals at low signal to noise ratio
10/13/2005WO2005096538A1 Methods and apparatus for flexible spectrum allocation in communication systems
10/13/2005WO2005096537A1 Device and method for judging communication quality and program used for the judgment
10/13/2005WO2005096533A1 Method and apparatus for an enhanced ofdm system
10/13/2005WO2005096532A1 Adaptive scheduling of voice traffic in a multi-carrier communication environment
10/13/2005WO2005096531A1 Wireless comunication methods, systems, and signal structures
10/13/2005WO2005096522A1 Base station apparatus, mobile station apparatus, and data channel scheduling method
10/13/2005WO2005094511A2 Minimizing the differential delay in adsl2 and adsl2+ to support bonding
10/13/2005WO2005078937A3 A method to reduce the memory requirement of the deinterleaver within a digital audio broadcast radio receiver using data compression
10/13/2005WO2005002063A3 Method and system for suppressing carrier leakage
10/13/2005WO2004075442A3 Methods and apparatus of enhanced coding in multi-user communications systems
10/13/2005US20050229073 Transmitting device and transmitting method
10/13/2005US20050228843 Method and apparatus for demodulating square root
10/13/2005US20050227653 Broadband radio transceiver with optical transform
10/13/2005US20050227642 Hardware efficient RF transceiver I/Q imbalance compensation based upon taylor approximation
10/13/2005US20050227630 System for synchronizing a portable transceiver to a network
10/13/2005US20050226624 Optical pulse position modulation discriminator
10/13/2005US20050226352 Mirror suppression circuit and receiver using such circuit
10/13/2005US20050226351 Complementary code keying (CCK) sequentially decoding apparatus and process thereof
10/13/2005US20050226350 Synchronous detector with high accuracy in detecting synchronization and a method therefor
10/13/2005US20050226348 Frequency staggered frequency shift keying modulation
10/13/2005US20050226346 Distortion compensating apparatus
10/13/2005US20050226344 I/Q MIMO detection for single antenna interference cancellation
10/13/2005US20050226343 Method and apparatus to select coding mode
10/13/2005US20050226342 System and method for mapping information symbols to transmission symbols
10/13/2005US20050226341 Decision feedback channel estimation and pilot tracking for OFDM systems
10/13/2005US20050226340 Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacturre
10/13/2005US20050226339 Packet error signal generator
10/13/2005US20050226316 Adaptive equalizing apparatus and method
10/13/2005US20050226313 Method for transmitting optimally diversified information in a MIMO telecommunication system
10/13/2005US20050226277 Signal reception apparatus, systems, and methods
10/13/2005US20050226208 Method and system for a new packet preamble for wideband wireless local area network (LAN) systems
10/13/2005US20050226141 Apparatus and method for transmitting/receiving pilot code pattern for identification of base station in communication system using orthogonal frequency division multiplexing scheme
10/13/2005US20050226140 Method and apparatus for pilot signal transmission
10/13/2005US20050226139 Extracting the phase of an ofdm signal sample
10/13/2005US20050225400 Voltage-controlled oscillator and quadrature modulator
10/13/2005US20050225383 Binary frequency-shift keying demodulator and frequency-to-voltage converter
10/13/2005DE19757636B4 Datenübertragungs-Verfahren und -Vorrichtung in einem Pulsamplitudenmodulations-Kommunikationssystem Data transmission method and apparatus in a pulse amplitude modulation communication system
10/13/2005DE102004014148A1 Digitaler IQ-Modulator mit numerisch gesteuertem Frequenzoszillator Digital IQ modulator with numerically controlled oscillator frequency
10/13/2005DE102004013866A1 Digital point to multi-point transmission interference reduction signal processing procedure uses shaping vector selected to minimise Euclidean norm of difference vector
10/13/2005DE102004013492A1 Vorrichtung zum Einkoppeln von elektrischen Signalen in Leitungen oder Kabel zu Ortungszwecken Apparatus for coupling electrical signals in lines or cables to locating purposes
10/13/2005CA2736063A1 Methods and apparatus for flexible spectrum allocation in communication systems
10/12/2005EP1585232A1 Method for transmitting optimally diversified information in a MIMO telecomminication system
10/12/2005EP1585229A1 Frequency staggered frequency shift keying modulation
10/12/2005EP1584170A2 Converter circuit for a limiter receiver structure and method for converting a signal in a limiter receiver structure
10/12/2005EP1584169A1 Agc circuit arrangement for a tuner
10/12/2005EP1584168A1 Apparatus and method for processing an impulse response of a channel
10/12/2005EP1421756B1 Pilot aided clock synchronization for ofdm signals
10/12/2005EP1237293B1 Method for increasing the capacity in a CDMA system
10/12/2005EP1232622B1 Error detection/correction coding for hierarchical qam transmission systems
10/12/2005EP1203455B1 Method and apparatus for coherent demodulation in communication system employing a potentially gated pilot signal
10/12/2005EP1181796B1 Method for transmitting data from an interrogating device to portable objects
10/12/2005EP1027769B1 Method and device in a telecommunication system
10/12/2005EP0629325B1 Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a cdma cellular communications system
10/12/2005CN1682533A A video recorder unit and method of operation therefor
10/12/2005CN1682509A Preamble for estimation and equalization of asymmetries between inphase and quadrature branches in multicarrier transmission systems
10/12/2005CN1682508A Iterative estimation and equalization of asymmetries between inphase and quadrature branches in multicarrier transmission systems
10/12/2005CN1682506A Filterbank modulation system with pre-equalization
10/12/2005CN1682504A Method for the transmission of data telegrams in a switched cyclical communication system
10/12/2005CN1682501A System for efficient recovery of node-B buffered data following MAC layer reset
10/12/2005CN1682459A Device and method for carrying out correlations in a mobile radio system
10/12/2005CN1682435A Trimming of a two point phase modulator
10/12/2005CN1681314A Digital broadcasting transmitter for receiving digital guided audio signals with different priorities by digital zones
10/12/2005CN1681268A 相位校正装置及其方法 Phase correction apparatus and method
10/12/2005CN1681267A Binary frequency shift keying demodulator
10/12/2005CN1681266A Frequency staggered frequency shift keying modulation
10/12/2005CN1681223A Method for transmitting optimally diversified information in a MIMO telecommunication system
10/12/2005CN1681219A Estimating method and device of carrier wave frequency offset leading wireless communicating system
10/12/2005CN1681029A Adaptive equalizing apparatus and method
10/12/2005CN1223153C Method for determining synchronous position for wireless local area network
10/12/2005CN1223105C Device and method for processing digital data signal in CDMA radio transmitter
10/12/2005CN1223093C Signal multiplexer and multiplexing method
10/12/2005CN1223081C Apparatus and method for transmitter
10/11/2005US6954505 Discrete multitone modulation with reduced peak-to-average ratio using unloaded subchannels
10/11/2005US6954496 Method for transmitting data from an interrogating device to portable objects
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