| Patents for H04L 27 - Modulated-carrier systems (89,721) |
|---|
| 04/27/2004 | US6728527 Double up-conversion modulator |
| 04/27/2004 | US6728524 Automatic gain control circuit for controlling two AGC amplifiers |
| 04/27/2004 | US6728467 Communication system |
| 04/27/2004 | US6728368 Apparatus and method for a highly efficient low power driver for a central office ADSL system |
| 04/27/2004 | US6728366 Signal level adjustment arrangement |
| 04/27/2004 | US6728322 Sequential decoder, and receiver using sequential decoder |
| 04/27/2004 | US6728321 Receiving device for angle-modulated signals |
| 04/27/2004 | US6728301 System and method for automatic frequency control in spread spectrum communications |
| 04/27/2004 | US6728298 Spread spectrum communication system and method for the same |
| 04/27/2004 | US6728203 Systems and methods for selecting a cell in a communications network |
| 04/27/2004 | US6727936 NTSC interference rejection filter |
| 04/27/2004 | US6727786 Band switchable filter |
| 04/27/2004 | US6727772 Method and system for synchronizing a quadrature amplitude modulation demodulator |
| 04/27/2004 | US6727771 Semiconductor integrated circuit device with variable gain amplifier |
| 04/27/2004 | US6726297 OFDMA signal transmission apparatus and method |
| 04/27/2004 | CA2347899C Ofdm timing and frequency recovery system |
| 04/22/2004 | WO2004034667A2 Electromagnetic wave trasmitter systems, methods and articles of manufacture |
| 04/22/2004 | WO2004034666A1 Multi carrier qam modulator with direct up-conversion |
| 04/22/2004 | WO2004034665A2 Apparatus and method for adaptively re-aligning a modulated output signal |
| 04/22/2004 | WO2004034664A2 Apparatus, methods and articles of manufacture for noise reduction in electromagnetic signal processing |
| 04/22/2004 | WO2004034663A1 Channel estimation for ofdm systems |
| 04/22/2004 | WO2004034659A2 Method and apparatus for digital modulation using a cordic algorithm |
| 04/22/2004 | WO2004034658A2 Method of digital modulation and corresponding transmitter |
| 04/22/2004 | WO2004034620A1 Multi-carrier transmitting apparatus and multi-carrier transmitting method |
| 04/22/2004 | WO2004034606A2 Method and apparatus for dynamic differential delay correction in a transmission system |
| 04/22/2004 | WO2004034603A2 Transmitter and methods of transmission using separate phase and amplitude modulators |
| 04/22/2004 | WO2004034596A2 Method and apparatus for transmission using digital modulator |
| 04/22/2004 | WO2004034594A2 Modulation multiplexing |
| 04/22/2004 | WO2004034586A2 Methods and apparatus for signal modification in a fractional-n phase locked loop system |
| 04/22/2004 | WO2004034566A1 Electromagnetic wave transmitter, receiver and transceiver systems, methods and articles of manufacture |
| 04/22/2004 | WO2004034565A2 Apparatus and methods for wideband signal processing |
| 04/22/2004 | WO2004034564A2 Trimming of a two point phase modulator |
| 04/22/2004 | WO2004034307A2 Apparatus, methods and articles of manufacture for digital modification in electromagnetic signal processing |
| 04/22/2004 | WO2004032600A2 Method and apparatus for data transfer using a time division multiple frequency scheme with additional modulation |
| 04/22/2004 | WO2004025853A3 Sub-banded ultra-wideband communication system |
| 04/22/2004 | WO2004019537A3 Multiple access wireless communications system using a multisector configuration |
| 04/22/2004 | WO2004019529A3 Beacon signaling in a wireless system |
| 04/22/2004 | WO2003026177A8 Mpeg program clock reference (pcr) delivery for support of accurate network clocks |
| 04/22/2004 | US20040077328 Frequency modulating device of an integrated circuit and a method of measuring modulated frequency |
| 04/22/2004 | US20040077321 Radio transmission device and method for aligning parameters thereof |
| 04/22/2004 | US20040077306 Scalable ultra-wide band communication system |
| 04/22/2004 | US20040076440 Transmitter and precoder for optical MSK signals |
| 04/22/2004 | US20040076433 Optical transmission system for frequency-multiplexed signal |
| 04/22/2004 | US20040076247 Peak-to-average power ratio modifier |
| 04/22/2004 | US20040076246 Methods and apparatus for synchronization of training sequences |
| 04/22/2004 | US20040076243 Channel search device |
| 04/22/2004 | US20040076241 Method for reducing transmissions in boundary zones, in amplitude modulation transmitters operating in digital mode |
| 04/22/2004 | US20040076239 Apparatus and method for tracking residual frequency offset for single carrier-frequency domain equalizer system |
| 04/22/2004 | US20040076238 Phasor fragmentation circuitry and method for processing modulated signals having non-constant envelopes |
| 04/22/2004 | US20040076228 Look-ahead decision feedback equalizing receiver |
| 04/22/2004 | US20040076188 Method and apparatus for formatting signals for digital audio broadcasting transmission and reception |
| 04/22/2004 | US20040076172 Mobile communication system, multicarrier cdma transmitter, and multicarrier cdma receiver |
| 04/22/2004 | US20040076112 Blind OFDM channel estimation and identification using receiver diversity |
| 04/22/2004 | DE10296741T5 Kombinierter Empfänger für die Reifendrucküberwachung und den fernbedienbaren, schlüssellosen Türzutritt Combined receiver for the tire pressure monitoring and remote controlled keyless door entry |
| 04/22/2004 | DE10296365T5 Vorrichtung, Verfahren und Programm zum Schätzen eines Symbolpunktes, Speichermedium zum Speichern des Programms und Vorrichtung zur Modulationsanalyse The device, method and program for estimating a symbol point, the storage medium for storing the program and apparatus for the modulation analysis |
| 04/22/2004 | DE10248507A1 Error correction method for multiplex signals, esp. OFDM in digital audio broadcast (DAB), involves compensating or balancing step of partial elimination of phase error accumulation of part signal |
| 04/22/2004 | DE10247208A1 Bridge-circuit arrangement for echo suppression in communication devices e.g. for xDSL-transmission systems, includes variable simulating device for simulating at least one circuit section of bridge branch |
| 04/22/2004 | CA2473943A1 Modulation multiplexing |
| 04/21/2004 | EP1411696A1 Direct digital synthesis in a QAM demulator |
| 04/21/2004 | EP1411695A2 Mapping with unequal error protection |
| 04/21/2004 | EP1411694A2 Amplitude modulation with wave shaping |
| 04/21/2004 | EP1411664A1 Multi-carrier transmission apparatus, multi-carrier reception apparatus, and multi-carrier radio communication method |
| 04/21/2004 | EP1411660A2 Maximum time interval error test signal generating apparatus not affected by low-pass measuring filter |
| 04/21/2004 | EP1411658A2 Optical MSK transmitter |
| 04/21/2004 | EP1411654A1 Optical MSK transmitter |
| 04/21/2004 | EP1411642A1 Iterative metric updating when decoding LDPC (low density parity check) coded signals and LDPC coded modulation signals |
| 04/21/2004 | EP1410593A1 Minimization of error contributions in a dmt system |
| 04/21/2004 | EP1410591A2 Supressed cycle based carrier modulation using amplitude modulation |
| 04/21/2004 | EP1410551A1 Method and apparatus for efficiently calculating log-likelihood ratios |
| 04/21/2004 | EP1410541A1 Improved scheme for the initialization of adsl modems |
| 04/21/2004 | EP1410526A1 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission |
| 04/21/2004 | EP1410496A2 Method and device for compensating a phase error in a receiver and/or transmitter system with an i/q-interface |
| 04/21/2004 | EP1410495A1 System for controlling a class d amplifier |
| 04/21/2004 | EP1125359B1 Method and system for down-converting an electromagnetic signal |
| 04/21/2004 | EP0968584B1 Method for reducing redundant transmissions of data groups |
| 04/21/2004 | EP0920763B1 Data transmission by impulse position modulation and amplitude modulation |
| 04/21/2004 | EP0745302B1 High speed communications system for analog subscriber connections |
| 04/21/2004 | CN1491504A Receiver for receiving data frames containing information and signaling data |
| 04/21/2004 | CN1491499A System and method for data transmission in DMT-based DSL modems |
| 04/21/2004 | CN1491063A Method for shortening active receiving time and saving power in stand-by mode |
| 04/21/2004 | CN1491058A Telecommunication system with transmission and multiuser diversity |
| 04/21/2004 | CN1491052A Method for contracting and enlarging signal peak value power amplitude |
| 04/21/2004 | CN1491038A Digital broadcasting system transmitter and method |
| 04/21/2004 | CN1491036A Transmitting device and method of digital broadcasting system with improved internal random mechanism |
| 04/21/2004 | CN1491035A Transmitting device and method of digital broadcasting system with improved internal rondam mechanism |
| 04/21/2004 | CN1491031A Transmitter for digital broadcasting system with comprehensive error correcting coding function and method thereof |
| 04/21/2004 | CN1491023A 集成调制器和解调器 Integrated modulator and demodulator |
| 04/21/2004 | CN1491011A Multicarrier transmitting system for inserting pilot signal in frequency domain and inserting method thereof |
| 04/21/2004 | CN1491010A Multicarrier transmitting system for improving receiving efficiency of multicarrier receiving system and method thereof |
| 04/21/2004 | CN1491009A Single carrier transmitting system for improving receiving efficiency of single carrier receiving system |
| 04/21/2004 | CN1490972A Uniform and ununiform modulated constellation mapping based nonisoprotective mixed automatic retransmission inquiry method |
| 04/21/2004 | CN1490955A Method for obtaining rough estimate of frequency diviation by frequency domain PV sequence guidance |
| 04/21/2004 | CN1490954A Frequency domain guiding and verifying symbol computing method for OFDM precisive synchronization |
| 04/21/2004 | CN1490953A Multicarrier transmitting system for improving receiving efficiency of multicarrier receiving system and method thereof |
| 04/21/2004 | CN1490952A Orthogonal FDM transmitting system and method for reducing synchronizing time |
| 04/21/2004 | CN1490951A Multicarrier transmitting system for inserting pilot signal in time-domain and inserting method thereof |
| 04/21/2004 | CN1490950A Multicarrier transmitting system for improving receiving function and signal processing method thereof |
| 04/21/2004 | CN1490949A Multicarrier transmitting system for improving receiving function and signal processing method thereof |
| 04/21/2004 | CN1490937A Digital broadcasting apparatus and method with different error correcting codes under communication environment |
| 04/21/2004 | CN1147180C Multi-frequency band mobile unit communication equipment |