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
10/11/2005US6954495 Optimization of channel equalizer
10/11/2005US6954493 Modem apparatus, image communication apparatus and communication control method
10/11/2005US6954490 Fully integrated ethernet transmitter architecture with interpolating filtering
10/11/2005US6954481 Pilot use in orthogonal frequency division multiplexing based spread spectrum multiple access systems
10/11/2005US6954471 Method and device of generation of one reference event from a frame of information
10/11/2005US6954470 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
10/11/2005US6954423 Analog implementation of linear transforms
10/11/2005US6954421 Orthogonal frequency division multiplexing receiver device
10/11/2005US6954420 Method for displaying the modulation error of a multiple carrier signal
10/11/2005CA2453896C Communication system with multicarrier telephony transport
10/11/2005CA2251887C Radio frequency noise canceller
10/06/2005WO2005094052A1 High speed multiple loop dsl system
10/06/2005WO2005094031A1 Error adjustment for multi-antenna transmitter
10/06/2005WO2005094030A1 Framing structure allowing flexible allocation of overhead channel
10/06/2005WO2005094029A1 Power save mode transition in digital subscriber lines
10/06/2005WO2005094028A1 Periodic training signals
10/06/2005WO2005094027A1 Efficient tone ordering for multitone transmission
10/06/2005WO2005094026A1 Communication device and communication method
10/06/2005WO2005093987A1 An apparatus and associated methods to introduce diversity in a multicarrier communication channel
10/06/2005WO2005093979A1 Radio system and radio communication device
10/06/2005WO2005093962A1 Radio system, radio transmitter, and radio receiver
10/06/2005WO2005091794A2 Mimo dynamic psd allocation for dsl networks
10/06/2005WO2004079978A9 Cost-effective multi-channel quadrature amplitude modulation
10/06/2005WO2004075443A3 Receiving and transmitting signals having multiple modulation types using sequencing interpolator
10/06/2005US20050223306 Communications apparatus, systems, and methods
10/06/2005US20050220241 Mean power frequency discriminator, frequency phase locked loop circuit and digital television demodulator using the same
10/06/2005US20050220230 Carrier detecting method and carrier detecting circuit
10/06/2005US20050220229 Synchronization acquisition circuit and receiving apparatus using the same
10/06/2005US20050220228 Accurate signal detection in a wireless environment
10/06/2005US20050220227 Method and apparatus to detect modulation scheme
10/06/2005US20050220226 Binary frequency-shift keying demodulator
10/06/2005US20050220225 Method and apparatus for frequency correction in wireless local area network systems
10/06/2005US20050220224 Polyphase filter with passband compensation and method therefor
10/06/2005US20050220223 Bandpass filter with reversible IQ polarity to enable a high side or low side injection receiver architecture
10/06/2005US20050220220 Slicing algorithm for multi-level modulation equalizing schemes
10/06/2005US20050220219 Digital Modulator for a GSM/GPRS/EDGE wireless polar RF transmitter
10/06/2005US20050220218 RF transmitter architecture for continuous switching between modulations modes
10/06/2005US20050220217 Transmitter and wireless communication apparatus using same
10/06/2005US20050220214 Signal generation apparatus, systems, and methods
10/06/2005US20050220210 Method and construction for space-time codes for AM-PSK constellations
10/06/2005US20050220205 Constellation mapping apparatus and method
10/06/2005US20050220203 System & method for spreading on fading channels
10/06/2005US20050220202 Method for seamlessly changing power modes in an ADSL system
10/06/2005US20050220201 Methods and apparatus for determining minimum cyclic prefix durations
10/06/2005US20050220199 OFDM system with per subcarrier phase rotation
10/06/2005US20050220198 Apparatus and method of controlling a physical layer of a communication device
10/06/2005US20050220180 High speed access system over copper cable plant
10/06/2005US20050220179 Iterative waterfiling with explicit bandwidth constraints
10/06/2005US20050220178 Semi-distributed power spectrum control for digital subscriber line communications
10/06/2005US20050220175 Circuit for synchronizing symbols of OFDM signal
10/06/2005US20050220173 Methods and systems for frequency shift keyed modulation for broadband ultra wideband communication
10/06/2005US20050220172 Methods and apparatus for generating and processing wideband signals having reduced discrete power spectral density components
10/06/2005US20050220002 Multi-carrier communications with group-based subcarrier allocation
10/06/2005US20050220001 Method and system for receiving a multi-carrier signal
10/06/2005US20050219998 Dynamic zero suffix addition
10/06/2005US20050219564 Image forming device, pattern formation method and storage medium storing its program
10/06/2005US20050219110 Circuit arrangement
10/06/2005US20050218294 Image sensor
10/06/2005DE19824233B4 Amplitudenbegrenzung Amplitude limiting
10/06/2005DE10392316T5 Verringerung des Scheitelfaktors der Signalleistung Reducing the crest factor of the signal power
10/06/2005DE102004023220A1 Verfahren und Vorrichtung zum Erzeugen einer Schwingung mit veränderlicher Frequenz Method and apparatus for generating an oscillation having a variable frequency
10/06/2005DE102004013837A1 Verfahren zur drahtlosen Datenübertragung Method for wireless data transmission
10/06/2005CA2561009A1 High speed multiple loop dsl system
10/05/2005EP1583309A2 Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system
10/05/2005EP1583308A1 Semi-distributed power spectrum control for DSL communications
10/05/2005EP1583306A2 Multicarrier receiver with estimation of channel time variance
10/05/2005EP1583277A1 MIMO-OFDM backward-compatible transmission system
10/05/2005EP1583271A2 System and method for spreading on fading channels
10/05/2005EP1583268A1 Ofdm signal collision position detection device and ofdm reception device
10/05/2005EP1583267A1 Method for the time- and frequency-domain synchronisation of multiple devices in a transmission system with ofdm modulation
10/05/2005EP1583245A2 Data converter device and data conversion method, and transmitter circuit, communications device and electronic device using the same
10/05/2005EP1583225A1 Digital frequency-upconverting circuit
10/05/2005EP1582042A2 Pilot transmission schemes for wireless multi-carrier communication systems
10/05/2005EP1582032A2 Mimo wlan system
10/05/2005EP1581820A1 Method and apparatus for performing timing synchronization
10/05/2005EP1068668B1 Circuit for processing data signals
10/05/2005EP0937339B1 Calibration of n-port receiver
10/05/2005EP0922351B1 Multilevel coding with time diversity
10/05/2005EP0746930B1 Frequency stabilized fsk transmitter
10/05/2005CN2731842Y User's appliances of transmit processing for using receiver functions
10/05/2005CN1679293A Method and transmission device for the transmission of data in a multi-carrier system
10/05/2005CN1679292A Transmission device
10/05/2005CN1679291A Method and system for concurrent estimation of frequency offset and modulation index
10/05/2005CN1679290A Method for generating I/Q signal in a TDMA transmitter and corresponding modulator
10/05/2005CN1679288A Training using overhead data in a wireless communications network
10/05/2005CN1678012A Image sensor
10/05/2005CN1677970A Pilot designing method in system of uplink of DMA
10/05/2005CN1677969A Improved operation of backward-compatible transmission
10/05/2005CN1677968A Mean power frequency discriminator, frequency phase locked loop circuit and digital television demodulator using the same
10/05/2005CN1677967A Binary frequency-shift key-controlled demodulator and frequency voltage conversion circuit
10/05/2005CN1677966A Carrier detecting method and carrier detecting circuit
10/05/2005CN1677965A Digital modulator employing a polyphase up-converter structure
10/05/2005CN1677915A Adaptive channelization scheme for high throughput multicarrier systems
10/05/2005CN1677911A Carrier-wave recovering method for time-domain synchronous orthogonal frequency-division duplex receiver and system thereof
10/05/2005CN1677909A Frame synchronizing method for time-domain synchronous orthogonal frequency-division duplex receiver and system
10/05/2005CN1677908A TDS-OFDM receiver self-adaptive channel estimation balancing method and system
10/05/2005CN1677898A Radio communication method and radio communication apparatus using adaptive modulation system
10/05/2005CN1677886A Synchronization acquisition circuit and receiving apparatus using the same
10/05/2005CN1677429A Method and apparatus for improving wireless data transmission
10/05/2005CN1222144C Channel encoding apparatus and method in orthogonal frequency division multiplexing system
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