| Patents for H04L 27 - Modulated-carrier systems (89,721) |
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| 04/13/2004 | US6721370 Phase correction circuit for radio communication apparatus |
| 04/13/2004 | US6721369 Composite BPSK/AM-BPSK based spectral suppression of out-of-band energy from saturated RF amplifier |
| 04/13/2004 | US6721366 Phase tracking apparatus and method for continuous phase modulated signals |
| 04/13/2004 | US6721356 Method and apparatus for buffering data samples in a software based ADSL modem |
| 04/13/2004 | US6721301 Centroid tracking for spread-spectrum communications |
| 04/13/2004 | US6721267 Time and bandwidth scalable slot format for mobile data system |
| 04/13/2004 | US6720917 Acquisition for GPS C/A code and P(Y) code |
| 04/13/2004 | US6720824 Demodulation method and apparatus |
| 04/08/2004 | WO2004030392A1 Requesting and controlling access in a wireless communications network |
| 04/08/2004 | WO2004030303A1 Method and apparatus for receiving and deshuffling shuffled data in a high-rate packet data telecommunication system |
| 04/08/2004 | WO2004030302A1 Device and method for identifying a useful signal in a receiver |
| 04/08/2004 | WO2004030300A1 Method and circuit arrangement for demodulating a digital amplitude-modulated radio signal |
| 04/08/2004 | WO2004030299A2 Wavelet multicarrier comminication apparatus |
| 04/08/2004 | WO2004030297A1 Method for the transmission of data telegrammes in a switched cyclical communication system |
| 04/08/2004 | WO2004030265A1 Channel estimation for ofdm using orthogonal training sequences |
| 04/08/2004 | WO2004030252A1 Apparatus and method for generating preamble sequence in an ofdm communication system |
| 04/08/2004 | WO2004030240A1 Adaptive antenna radio communication device |
| 04/08/2004 | WO2004014034A3 Method for dividing the bit rate of qpsk signals into two or several subchannels |
| 04/08/2004 | WO2004004262A8 Method and system for concurrent estimation of frequency offset and modulation index |
| 04/08/2004 | WO2003105352A3 A method and system for providing window shaping for multiline transmission in a communications system |
| 04/08/2004 | WO2003075471A3 System and method for joint maximal ratio combining |
| 04/08/2004 | WO2003073219A3 Method and apparatus for sumultaneously transmitting video, sound, data and ordinary telephone service, bidirectionally over an ordinary twisted pair |
| 04/08/2004 | WO2003015335A8 Channel estimation in a multi carrier transmit diversity system |
| 04/08/2004 | WO2002030030A8 Method and system for transmission in a noisy environment |
| 04/08/2004 | US20040068748 Signal processing under attenuated transmission conditions |
| 04/08/2004 | US20040067741 Frequency offset compensation for communication systems |
| 04/08/2004 | US20040067039 Apparatus for recovering carrier |
| 04/08/2004 | US20040066862 Method and apparatus for joint phase offset and frequency offset estimator for MPSK transmission |
| 04/08/2004 | US20040066861 Quadrature demodulator for compensating for gain and phase imbalances between in-phase and quadrature-phase components |
| 04/08/2004 | US20040066859 Passive redundant digital data receiver with schmitt-trigger |
| 04/08/2004 | US20040066857 Reducing I/Q imbalance through image rejection |
| 04/08/2004 | US20040066844 Modulation and demodulation based on hierarchical modulation |
| 04/08/2004 | US20040066843 Communication system, signal receiveing device, signal transmitting device, and communication method |
| 04/08/2004 | US20040066840 Noise shaping technique for spread spectrum communications |
| 04/08/2004 | US20040066838 MC/MC-DS dual-mode adaptive multi-carrier code division multiple access (CDMA) apparatus and method thereof |
| 04/08/2004 | US20040066802 Apparatus and method for guard interval inserting/removing in an OFDM communication system |
| 04/08/2004 | US20040066800 Enhanced channel parameter estimation in the presence of preamble erasures |
| 04/08/2004 | US20040066773 Decision feedback channel estimation and pilot tracking for OFDM systems |
| 04/08/2004 | US20040066740 Apparatus and method for generating preamble sequence in a OFDM communication system |
| 04/08/2004 | US20040066739 Simplified implementation of optimal decoding for COFDM transmitter diversity system |
| 04/08/2004 | US20040066738 Method and apparatus for encoding/framing for modulated signals over impulsive channels |
| 04/08/2004 | US20040066737 Automatic frequency control device and automatic frequency control method |
| 04/08/2004 | US20040066227 Circuit configuration for demodulating a voltage which is ASK modulated by altering the amplitude between a low level and a high level |
| 04/08/2004 | DE19926101B4 Anordnung zur Fehlerkompensation bei der Umsetzung von Hochfrequenzsignalen ins Basisband Arrangement for error compensation in the implementation of high frequency signals into the base band |
| 04/08/2004 | DE19837658B4 Übertragungssignal-Empfängerschaltung Transmission signal receiver circuit |
| 04/08/2004 | DE19680530B4 Datenadapter Data Adapter |
| 04/08/2004 | DE10245687A1 Frequenzfehlerkorrektur in einem Übertragungssystem Frequency error correction in a transmission system |
| 04/08/2004 | DE10245039A1 Vorrichtung und Verfahren zur Erkennung eines Nutzsignals in einem Empfänger Apparatus and method for detection of a useful signal in a receiver |
| 04/08/2004 | DE10241956A1 Power and signal transmission system for radio communication equipment involves transmitter sending first signal to first circuit and second transmitter sending second signal to second circuit |
| 04/08/2004 | DE10025237B4 Verfahren und Vorrichtung für zeitgleiche Synchronisation und verbesserte automatische Frequenznachführung in einer Kommunikationsvorrichtung Method and apparatus for simultaneous synchronization and improved automatic frequency control in a communication device |
| 04/08/2004 | CA2499618A1 Method for the transmission of data telegrams in a switched cyclical communication system |
| 04/08/2004 | CA2468005A1 Apparatus and method for generating preamble sequence in an ofdm communication system |
| 04/08/2004 | CA2466918A1 Method and apparatus for receiving and deshuffling shuffled data in a high-rate packet data telecommunication system |
| 04/07/2004 | EP1406422A2 Hierarchical transmission of data |
| 04/07/2004 | EP1406421A2 Data transmission using hierarchical modulation |
| 04/07/2004 | EP1406405A1 System and method for adaptive modulation based on channel estimates and capacity requirements |
| 04/07/2004 | EP1406404A1 Orthogonal frequency division multiple signal reception apparatus, reception apparatus, orthogonal frequency division multiple signal reception method, and reception method |
| 04/07/2004 | EP1406402A2 Improved digital broadcast receiver |
| 04/07/2004 | EP1406392A1 Variable modulation with LDPC (low density parity check) coding |
| 04/07/2004 | EP1405481A2 Modulator and signaling method |
| 04/07/2004 | EP1405479A1 Iq-imbalance |
| 04/07/2004 | EP1405478A1 Packet data transmission using variable dqpsk modulation |
| 04/07/2004 | EP1405427A1 System and method for post filtering peak power reduction in communications systems |
| 04/07/2004 | EP1405423A1 Reducing effects of self-created interference on broadband reception |
| 04/07/2004 | EP1320968B1 Automatic frequency correction for mobile radio receivers |
| 04/07/2004 | EP1320934A4 Frequency translator using a cordic phase rotator |
| 04/07/2004 | EP1316142B1 Phase and amplitude digital modulation circuit and method |
| 04/07/2004 | EP1234421B1 Reduction of par/out-of-band radiation in ofdm systems |
| 04/07/2004 | EP1157462B1 Method and apparatus for frequency synchronisation in a digital radio communications system |
| 04/07/2004 | EP1125363A4 Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter |
| 04/07/2004 | EP1068688A4 Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system |
| 04/07/2004 | EP1050143B1 Method for processing a signal consisting of data symbols |
| 04/07/2004 | EP0799530B1 Dual-mode fm/cdma communication system |
| 04/07/2004 | CN1488221A Modulator with low sensitivity to amplitude and phase errors of the carrier signal |
| 04/07/2004 | CN1488220A Method for estimating the channel properties in a communication system |
| 04/07/2004 | CN1488219A Compensation method for a transceiver using two-point modulation |
| 04/07/2004 | CN1488218A Wireless communication apparatus |
| 04/07/2004 | CN1488210A Method and device for reducing peak-to-average power ratio in mobile communication system using orthogonal frequency division multiplexing |
| 04/07/2004 | CN1488209A Multi-pass interference removal apparatus and multi-pass interference removal method |
| 04/07/2004 | CN1488118A 改进的标识读取器 Improved identification reader |
| 04/07/2004 | CN1487709A Data receiving apparatus |
| 04/07/2004 | CN1487688A Apparatus and method for increasing channel capacity of mobile communication system |
| 04/07/2004 | CN1487682A Multi-carrier thansmitting system with frequency-domain hidden pilot signal and signal processing method |
| 04/07/2004 | CN1487681A Multi-carrier transmitting system with 3600 point IDFT processor and signal processing method thereof |
| 04/07/2004 | CN1487680A Multi-carrier wale system with 3780 point IDFT/DFT processor and method thereof |
| 04/07/2004 | CN1145388C Signal processing method for radio communication, radio receiver and transmitting machine |
| 04/07/2004 | CN1145346C Method for processing telephone signals provided by analog telephone terminal equipment and data provided by data terminal apparatus |
| 04/07/2004 | CN1145331C Method for detecting pilot sound |
| 04/07/2004 | CN1145330C Maximum likelihood sequence estimate utilizing look-up table to substitute multiply operation |
| 04/07/2004 | CN1145274C Spread-spectrum communication system |
| 04/07/2004 | CN1145261C Transmission method utilizing fractional N-phase-locked loop to synthesis conversion oscillator signal |
| 04/06/2004 | US6718493 Method and apparatus for selection of ARQ parameters and estimation of improved communications |
| 04/06/2004 | US6717995 Method for correcting DC offsets in a receiver |
| 04/06/2004 | US6717993 Receiver |
| 04/06/2004 | US6717983 Ultrasonic coding modem for digital network communication |
| 04/06/2004 | US6717976 Method and apparatus for signal to noise power ratio estimation in a multi sub-channel CDMA receiver |
| 04/06/2004 | US6717961 Format converting apparatus and digital broadcasting receiver |
| 04/06/2004 | US6717934 Wireless telecommunication system having improved recognition of modulation type in GPRS |
| 04/06/2004 | US6717908 Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals |
| 04/06/2004 | US6717532 Communication system and method |