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)
11/2002
11/20/2002EP1258122A1 Psk receiver with amplitude reconstruction and digital matched filter
11/20/2002EP1258120A1 Method and apparatus for implementing the training phase of adaptive channel equalization on a digital communications path
11/20/2002EP1258098A1 High speed downhole communications network having point to multi-point orthogonal frequency division multiplexing
11/20/2002EP1258091A1 METHOD AND APPARATUS FOR ACHIEVING 180o PHASE INVARIANT TRANSMISSION IN A PCM MODEM SYSTEM
11/20/2002EP1258077A2 Circuit configuration for direct modulation
11/20/2002EP1257844A1 Device for transmitting data in a motor vehicle
11/20/2002EP1078450A4 Methods and apparatus for timing recovery of vestigial sideband (vsb) modulated signals
11/20/2002EP1076938B1 Multipath cdma receiver for reduced pilot
11/20/2002EP0922345B1 Improvements in, or relating to, multi-carrier transmission systems
11/20/2002EP0809895B1 Method and apparatus for using walsh shift keying in a spread spectrum communication system
11/20/2002CN1381124A Fading resistant multi-level QAM receiver
11/20/2002CN1381123A BS digital broadcasting receiving device and receiving method thereof
11/20/2002CN1381122A Method and receiver for estimating data bit rates
11/20/2002CN1381114A 无线通信装置和无线通信方法 The wireless communication apparatus and wireless communication method
11/20/2002CN1381112A Multi-carrier communication apparatus and multi-carrier communication method
11/20/2002CN1381111A Communication apparatus and communication method
11/20/2002CN1381090A Autocalibration of transceiver through nulling of DC-voltage in a receiver and injecting of DC signals in a transmitter
11/20/2002CN1380778A OFDM signal transmission system, OFDM signal transmitter and receiver
11/20/2002CN1380763A Method and device for producing synthesis wave
11/20/2002CN1380754A Improved ADSL compatible discrete multiple audio frequency device
11/20/2002CN1380742A Front processor for data receiver and nonlinear distortion equalizing method
11/20/2002CN1094684C Receiver for carrying out complex value path gain estimation and gain estimation method
11/20/2002CN1094676C AM data modulation apparatus
11/19/2002US6484042 Secondary automatic gain control loops for direct conversion CDMA receivers
11/19/2002US6483883 Automatic gain control type demodulation apparatus having single automatic gain control circuit
11/19/2002US6483880 Radio equipment and peripheral apparatus
11/19/2002US6483869 Frequency decimated DMT modulation modem
11/19/2002US6483868 Processing for improved performance and reduced pilot
11/19/2002US6483286 Method and apparatus for measuring the instantaneous frequency of FM signals
11/19/2002CA2222029C Slice predictor for a signal receiver
11/14/2002WO2002091698A2 Adaptive pre-distortion of an amplitude- and frequency- or phase-modulated radio frequency signal generator
11/14/2002WO2002091697A2 Demodulation of psk signals
11/14/2002WO2002091696A2 Method and apparatus for digital data transmission and reception using synthetically generated frequency
11/14/2002WO2002091694A1 Device and method for determining a type of modulation
11/14/2002WO2002091653A1 Method and device for transmitting data in a multi-carrier system comprising parallel concatenated coding and modulation
11/14/2002WO2002091651A2 Fast exchange during initialization in multicarrier communication systems
11/14/2002WO2002091640A2 Method for increasing the power emitted during the transmission of digital multi-carrier signals with am emitters
11/14/2002WO2002091600A2 High-speed adjustable multilevel light modulation
11/14/2002WO2002091572A1 Adaptive equalizer system for short burst modems and link hopping radio networks
11/14/2002WO2002067525A3 Intercarrier interference cancellation in multicarrier receivers
11/14/2002WO2002058413A3 Apparatus and method for operating a subscriber interface in a fixed wireless system
11/14/2002US20020168032 Detection and correction of phase jumps in a phase sequence
11/14/2002US20020168031 Method and apparatus for communication in an environment having repetitive noise
11/14/2002US20020168030 Stereo demultiplexer
11/14/2002US20020168028 Frequency-modulated signal receiver with digital demodulator
11/14/2002US20020168026 Multi-protocol modulator
11/14/2002US20020168025 Multiple bandwidth amplifier control systems for mobile stations and methods therefor
11/14/2002US20020168023 Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels
11/14/2002US20020168022 Data communication apparatus and method based on orthogonal frequency division multiple access
11/14/2002US20020168020 Methods, transmitters, and computer program products for transmitting a signal by adjusting a delay between an amplitude component of the signal and a phase component of the signal based on the transmission power
11/14/2002US20020168016 Method and apparatus for reducing peak to average power ratio in a multi-carrier modulation communication system
11/14/2002US20020168014 Communications with minimized propagation delay
11/14/2002US20020168013 Method and apparatus for reducing peak to average power ratio in a multi-carrier modulation communication system
11/14/2002US20020167999 Equalizer, receiver, and equalization method and reception method
11/14/2002US20020167997 Method of compensating signal distortion of one-tap equalizer bank for the orthogonal frequency division multiplexing system
11/14/2002US20020167996 Arrangement for analyzing the nonlinear properties of a communication channel
11/14/2002US20020167962 Outer code for CSMA systems using an OFDM physical layer in contention-free mode
11/14/2002US20020167894 Technique for continuous OFDM modulation
11/14/2002US20020167693 Increasing data throughput in optical fiber transmission systems
11/14/2002US20020167454 Tunable dipole antenna
11/14/2002US20020167451 Tunable waveguide antenna
11/14/2002US20020167447 Tunable monopole antenna
11/14/2002US20020167369 Frequency converter, orthogonal demodulator and orthogonal modulator
11/14/2002US20020167368 FSK demodulation system
11/14/2002DE10122640A1 Device for modulating carrier signal with digital input signal, provides assignment of signal groups based on at least two symbols per input signal
11/14/2002DE10122638A1 Digital device for modulating carrier signal forms symbol space of essentially circular, spherical or correspondingly multidimensional form with essentially equidistant symbol values
11/14/2002CA2484899A1 Adaptive equalizer system for short burst modems and link hopping radio networks
11/14/2002CA2446765A1 High-speed adjustable multilevel light modulation
11/14/2002CA2446541A1 Adaptive pre-distortion of an amplitude- and frequency- or phase-modulated radio frequency signal generator
11/14/2002CA2386053A1 Method and apparatus for communication in an environment having repetive noise
11/13/2002EP1257105A2 Equalization for ADSL using a mixed time domain and frequency domain approach
11/13/2002EP1257104A2 Heirarchical transmission with multicarrier modulation and error correction coding
11/13/2002EP1257052A2 Demodulator
11/13/2002EP1256223A1 Method and apparatus for minimising cross talk due to discrete mutli-tone transmission in cable binders
11/13/2002EP1256222A1 System and method for near optimal joint channel estimation and data detection for cofdm systems
11/13/2002EP1256218A1 Delayed decision feedback log-map equalizer
11/13/2002EP1256187A1 Method for frequency offset estimation in a direct sequence spread spectrum communications receiver
11/13/2002EP1256081A1 Method and circuit for providing interface signals between integrated circuits
11/13/2002EP0934652B1 Reception of modulated carriers having asymmetrical sidebands
11/13/2002EP0923823B1 Improvements in, or relating to, multi-carrier transmission systems
11/13/2002EP0923822B1 Improvements in, or relating to, multi-carrier transmission systems
11/13/2002EP0922343B1 Improvements in, or relating to, multi-carrier transmission systems
11/13/2002EP0922341B1 Improvements in, or relating to, multi-carrier transmission systems
11/13/2002CN1379942A Dynamic temp compensation and stage selection in pilot signal acquisition
11/13/2002CN1379561A System and method of transmitting/receiving data in CDMA mobile communication system
11/12/2002US6480704 Method and arrangement for forming a transmission signal
11/12/2002US6480589 CPE alert signal detector and caller identification detector using peak detection
11/12/2002US6480555 Method and apparatus for extended range frequency correction burst detection
11/12/2002US6480553 Gaussian frequency-shift keying transciever for ISM wideband communication
11/12/2002US6480552 Soft output metrics generation for symbol detectors
11/12/2002US6480536 Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal
11/12/2002US6480530 Processing for improved performance and reduced pilot
11/12/2002US6480503 Turbo-coupled multi-code multiplex data transmission for CDMA
11/12/2002US6480478 Data demodulator for multicode CDMA system
11/12/2002US6480236 Envelope detection of PN sequences accompanying VSB signal to control operation of QAM/VSB DTV receiver
11/12/2002US6480150 Autonomous hardwired tracking loop coprocessor for GPS and WAAS receiver
11/12/2002US6480099 Modulation method for data transmission from a transponder to a read-write device
11/12/2002US6480060 FSK signal demodulating integration-discharge circuit
11/12/2002CA2104701C Computer-based multifunction personal communications system
11/07/2002WO2002089436A1 Method for reducing signaling overhead in a multicarrier system with dynamic bit allocation and corresponding transmitter/receiver device
1 ... 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 ... 898