Patents for H04L 27 - Modulated-carrier systems (89,721)
06/2005
06/02/2005US20050116786 Amplitude and phase modulation using dual digital delay vectors
06/02/2005US20050116785 Modulation using discrete amplitude adjustment and dual digital delay lines
06/02/2005US20050116345 Support structure for low-k dielectrics
06/02/2005DE202005001929U1 Serial data transmission arrangement for vehicle, uses spread spectrum to increase electromagnetic compatibility
06/02/2005DE10348846A1 Verfahren zur Schätzung eines Frequenzversatzes eines modulierten Bandpass-Signals A method of estimating a frequency offset of a modulated band-pass signal
06/02/2005DE10348818A1 Verfahren zur Regelung eines Schutzintervalls von Datenströmen in digitalen Funkübertragungseinrichtungen und Funkempfangsgerät hierzu Method for controlling a guard interval of data streams in digital radio transmission devices and broadcast receivers this
06/02/2005DE10334842B4 Gewichtungsschaltung für einen Mehrträger-Signalempfänger Weighting circuit for a multi-carrier signal receiver
06/02/2005CA2545972A1 Method and apparatus for mobile radio velocity estimation
06/02/2005CA2545546A1 Coherent tracking for fm iboc receiver using a switch diversity antenna system
06/01/2005EP1536605A1 Amplitude modulation combined with phase or with frequency modulation
06/01/2005EP1536604A1 Demodulator circuit and receiver device
06/01/2005EP1536590A1 Method of reception for a telecommunications signal
06/01/2005EP1536585A1 Data processor and method for processing data
06/01/2005EP1536581A1 Multi-carrier communication system and receiver thereof
06/01/2005EP1536574A2 Method to increase performance of secondary data in a hierachical modulation scheme
06/01/2005EP1536566A1 Electronic circuit for decoding of an asynchronous biphase signal, corresponding method and corresponding control device.
06/01/2005EP1535466A1 Apparatus and method for recovery symbol timing in the ofdm system
06/01/2005EP1535440A1 Embedded keying
06/01/2005EP1535439A1 Noise bqlqnced qam detection
06/01/2005EP1535438A1 Detecting a carrier signal by using a power averaging circuit
06/01/2005EP1535437A1 Background updates for database information on a mobile device
06/01/2005EP1535436A2 A method and device for detecting the presence of a carrier signal transmitted in the reverse rf path
06/01/2005EP1535390A2 Trimming of a two point phase modulator
06/01/2005EP1142244B1 Method and system for the transmission, reception and processing of 4-level and 8-level signaling symbols
06/01/2005CN1623290A Communication device used in CDMA
06/01/2005CN1623275A Distortion compensator
06/01/2005CN1622653A Apparatus and method for frequency estimation of TD-SCDMA system downlink
06/01/2005CN1622623A Method and apparatus for searching next signal frame synchronous character in digital coding signal
06/01/2005CN1622606A Digital E8-VSB reception system and E8-VSB data demultiplexing method
06/01/2005CN1622540A Method and apparatus for frequency estimation using iterative filtering in a GSM communications system
06/01/2005CN1204778C Methdo for synchronizing reference frequency in cellular mobile system
06/01/2005CN1204769C Equipment and method for base staion in OFDM base spread spectrum multiple access wireless system
06/01/2005CN1204750C Method for collecting data transmitted on transmission channel
06/01/2005CN1204746C Single carrier transmitter inserting field synchronizing information into fields, and method thereof
06/01/2005CN1204721C Fast time delay optimization method of time domain equalizing training in discrete multisound system
06/01/2005CN1204702C VDSL initializing method containing tone space regulation
05/2005
05/31/2005US6901548 Coding apparatus, coding method and recording medium having coded program recorded therein, and decoding apparatus, decoding method and recording medium having decoded program recorded therein
05/31/2005US6901246 Suppressed cycle based carrier modulation using amplitude modulation
05/31/2005US6901242 System and method for mitigating intermittent interruptions in an audio radio broadcast system
05/31/2005US6901125 Method for error compensation in an OFDM system with diversity
05/31/2005US6901120 Method and apparatus for iterative parameter estimation
05/31/2005US6901114 Transmitter and method of generating a transmission signal
05/31/2005US6901112 Ultra wide bandwidth spread-spectrum communications system
05/31/2005US6901106 Delay lock code tracking loop employing multiple timing references
05/31/2005US6901059 Low noise hybrid circuit for communications systems using time division multiplexing
05/26/2005WO2005048552A1 Methods and apparatuses for dc offset estimation in ofdm systems
05/26/2005WO2005048551A1 Blind modulation detection
05/26/2005WO2005048548A2 Digital data receiver for edge cellular standard
05/26/2005WO2005048547A1 Tx line driver with common mode idle state and selectable slew rates
05/26/2005WO2005048546A2 Channel estimation by adaptive interpolation
05/26/2005WO2005048485A1 Space division multiplex wireless communication system, device and method for the same
05/26/2005WO2005048468A2 Wireless communication method and apparatus for performing post-detection constellation correction
05/26/2005WO2005048462A2 System and method for an improved quadrature upconverter for i/q modulation using intermediate frequency carriers
05/26/2005WO2005011144A3 Method and device for estimating a propagation channel of a multicarrier signal
05/26/2005WO2003007470A8 Harmonic mixer
05/26/2005US20050114748 Variable modulation with LDPC (low density parity check) coding
05/26/2005US20050114744 Data communication device and data communication method
05/26/2005US20050114426 Filtering, equalization, and power estimation for enabling higher speed signal transmission
05/26/2005US20050113101 Configurable spectral mask for use in a high data throughput wireless communication
05/26/2005US20050113061 Method and system for establishing a telephony data connection to receiver
05/26/2005US20050113043 Method and device for digital-to-RF conversion
05/26/2005US20050113040 Method to minimize compatibility error in hierarchical modulation using variable phase
05/26/2005US20050113033 Method and apparatus for frequency estimation using iterative filtering in a GSM communications system
05/26/2005US20050113031 Systems and methods for a wireless network connection point locator
05/26/2005US20050113026 Frame format for high data throughput wireless local area network transmissions
05/26/2005US20050111850 Optical transmission system for frequency-multiplexed signal
05/26/2005US20050111603 Process for providing a pilot aided phase synchronization of carrier
05/26/2005US20050111601 Apparatus and method for synchronizing a circuit during reception of a modulated signal
05/26/2005US20050111600 Orthogonal frequency division multiplexing (OFDM) receiver, OFDM receiving circuit and OFDM diversity reception method
05/26/2005US20050111595 Portable radio terminal and AFC control method
05/26/2005US20050111594 Timing-error estimation in a digital modem
05/26/2005US20050111590 Multi-layer differential phase shift keying with bit-interleaved coded modulation and OFDM
05/26/2005US20050111586 Digital E8-VSB reception system and E8-VSB data demultiplexing method
05/26/2005US20050111582 Digital modulation circuit and method as well as digital demodulation circuit and method
05/26/2005US20050111581 Method to inject hierarchical data onto single carrier stream
05/26/2005US20050111580 Method to minimize compatibility error in hierarchical modulation
05/26/2005US20050111579 Method to increase performance of secondary data in a hierarchical modulation scheme
05/26/2005US20050111578 Frequency modulator for digital transmissions
05/26/2005US20050111577 Method for residual carrier suppression in an arrangement which has a vector modulator
05/26/2005US20050111576 Peak-to-average reduction technique for multi-carrier power amplifiers
05/26/2005US20050111574 Transmission device with digital predistortion, and method for regulating predistortion in a transmission device
05/26/2005US20050111573 RF transmitter using digital-to-RF conversion
05/26/2005US20050111572 Data transmission system and data transmission apparatus
05/26/2005US20050111568 Transmitting method and transmitting apparatus
05/26/2005US20050111567 Adaptive data transmitter having rewriteable non-volatile storage
05/26/2005US20050111566 Wireless communication apparatus and method for multiple transmit and receive antenna system using multiple codes
05/26/2005US20050111565 Hierarchical trellis coded modulation
05/26/2005US20050111564 Nonsystematic repeat-accumulate codes for encoding and decoding information in a communication system
05/26/2005US20050111563 De-mapping method for wireless communications systems
05/26/2005US20050111561 Reliable multicarrier communication in the presence of periodic impulsive interference
05/26/2005US20050111539 Equalization method and apparatus using the same
05/26/2005US20050111535 Carrier grouping in multi-carrier systems
05/26/2005US20050111534 Method and system for selecting an optimal asymmetric digital subscriber line mode
05/26/2005US20050111530 Communication receiver
05/26/2005US20050111529 Tone detection using a cdma receiver
05/26/2005US20050111525 Method and apparatus for estimating DC offset in an orthogonal frequency division multiplexing system
05/26/2005US20050111522 Apparatus and method for generating preamble signal for cell identification in an orthogonal frequency division multiplexing system
05/26/2005US20050111492 Channel estimation apparatus and method for adaptive channel allocation in an orthogonal frequency division multiple access system
05/26/2005US20050111449 High data throughput wireless local area network receiver
05/26/2005US20050111424 Apparatus of transmitter and receiver for MIMO MC-CDMA system