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)
10/2012
10/09/2012US8284851 Transmission apparatus, reception apparatus, communication system, transmission method and reception method
10/09/2012US8284800 OFDM communications using bit allocation tables
10/09/2012US8284651 Preamble formats for MIMO wireless communications
10/09/2012US8283975 Data processing system
10/09/2012CA2341879C Codec mode decoding using a priori knowledge
10/04/2012WO2012135453A1 In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters
10/04/2012WO2012135449A1 Alignment of in-phase and quadrature data in quadrature phase shift keying optical transmitters
10/04/2012WO2012134535A1 Enhanced node b and method of transmitting physical-downlink control channels (pdcchs) in a lte-a system
10/04/2012WO2012134113A2 Method for transmitting ack/nack information and method for receiving ack/nack information, user device, and base station
10/04/2012WO2012134050A1 Method and system for removing channel interference signal that occurs due to a frequency offset in an orthogonal frequency division multiple access system
10/04/2012WO2012132195A1 Reception device
10/04/2012WO2012132191A1 Reception device
10/04/2012WO2012132185A1 Transmission-reception device
10/04/2012WO2012132103A1 Phase-compensation receiver
10/04/2012WO2012131067A1 Connecting device, system and method for signal transmission between a control centre and at least one field device in an industrial installation
10/04/2012WO2012130896A1 Technique for automatic gain control
10/04/2012WO2012130733A1 Method of decoding optical data signals
10/04/2012WO2012130559A1 Method and apparatus for determining a piece of extrinsic information
10/04/2012WO2012130180A1 System and method for transmission and reception of control channels
10/04/2012WO2012130090A1 Ofdm-based method and system for transmitting data
10/04/2012WO2012130088A1 Ofdm-based data transmission method and transmission station
10/04/2012WO2012129927A1 Cognitive pilot channel (cpc) information transmission method and radio access method and system based on cpc information
10/04/2012WO2012129807A1 Method and device for setting coefficients of butterfly filter, receiver and receiving method
10/04/2012WO2012129798A1 Method and apparatus for open loop transmission in a multiple antenna wireless communication system
10/04/2012WO2012092149A3 Estimation of the frequency error of a tone signal with widened acquisition range
10/04/2012WO2012081867A3 Method and apparatus for transmitting ack/nack in a wireless communication system based on tdd
10/04/2012WO2012074273A3 Method for allocating resources for uplink control information in a wireless communication system and terminal for same
10/04/2012WO2012031255A3 Methods and apparatus for encoding and transmitting mobile device location information
10/04/2012WO2011098427A3 Mapping apparatus and method for transmission of data in a multi-carrier broadcast system
10/04/2012US20120253736 Feedback compensation detector for a direct conversion transmitter
10/04/2012US20120251110 Computationally-efficient equalization in polmux ofdm transmission with direct-detection via joint transmitter and receiver processing
10/04/2012US20120251098 Method, apparatus and system for high-speed transmission on fiber optic channel
10/04/2012US20120250810 Device and method for receiving rf signals based on heterodyne architecture using complex if subsampling
10/04/2012US20120250809 Radio frequency (rf) receiver with dynamic frequency planning and method therefor
10/04/2012US20120250807 Schemes for detecting guard intervals in ofdm system
10/04/2012US20120250805 Method of demodulating a quadrature amplitude modulation signal and method of data communication
10/04/2012US20120250804 Efficient Square-Root Free 2 Symbol Max-Log Receiver
10/04/2012US20120250803 Method for error compensation in an ofdm system with diversity
10/04/2012US20120250802 Receiver, reception method, program and reception system
10/04/2012US20120250801 Intersymbol Interference Removal Method
10/04/2012US20120250800 Early detection of segment type using bpsk and dbpsk modulated carriers in isdb-t receivers
10/04/2012US20120250799 Blind symbol synchronization scheme for ofdm system
10/04/2012US20120250798 Maximizing data rate by adjusting codes and code rates
10/04/2012US20120250797 Signal receiving apparatus, signal receiving method and signal receiving program
10/04/2012US20120250796 Systems, methods and apparatus for determining control field and modulation coding scheme information
10/04/2012US20120250795 System and method for effectively implementing a front end core
10/04/2012US20120250794 System and method for effectively implementing a unit GM cell
10/04/2012US20120250793 In-Phase and Quadrature Pattern Alignment for Quadrature Phase Shift Keying Optical Transmitters
10/04/2012US20120250792 Alignment of In-phase and Quadrature Data in Quadrature Phase Shift Keying Optical Transmitters
10/04/2012US20120250791 Codebook Method for a Multiple Input Multiple Output Wireless System
10/04/2012US20120250787 System access and synchronization methods for mimo ofdm communications systems and physical layer packet and preamble design
10/04/2012US20120250786 Digital modulator and method for initiating ramp power transitions in a mobile handset transmitter
10/04/2012US20120250785 Adaptive Error Correcting Code for Data Communications Over a Plastic Optical Fibre
10/04/2012US20120250784 System and method for adapting a piece of terminal equipment
10/04/2012US20120250783 Method and Apparatus for Communicating Data in a Digital Chaos Communication System
10/04/2012US20120250782 Data transmission system and method
10/04/2012US20120250781 Dynamically adjusted a/d resolution
10/04/2012US20120250779 Method for Transmitting an Information Sequence
10/04/2012US20120250778 Modulation scheme for orthogonal frequency division multiplexing systems or the like
10/04/2012US20120250777 Data processing apparatus and method
10/04/2012US20120250776 Transmission controlling method, sender apparatus and receiver apparatus for wireless communication system
10/04/2012US20120250753 Crossing isi cancellation
10/04/2012US20120250748 Apparatus and method for sampling and reconstruction of wide bandwidth signals below nyquist rate
10/04/2012US20120250747 Transmitter and communication apparatus
10/04/2012US20120250637 Inter-Carrier Modulation
10/04/2012US20120249021 Information transmission apparatus
10/04/2012DE102012006447A1 Method for processing digital video broadcasting-second generation terrestrial signal, used in communication system, involves performing demodulation of frame using information contained in preamble symbol
10/04/2012DE102011078565A1 Verfahren und Vorrichtung zur Bestimmung einer extrinsischen Information Method and apparatus for determining an extrinsic information
10/04/2012CA2803658A1 A method and a device for determining an extrinsic information
10/03/2012EP2506643A1 Resources allocation method and apparatus of multiple relays orthogonal frequency division multiplexing (ofdm) system
10/03/2012EP2506593A1 Receiver, reception method, program and reception system for determining a gain and for adjusting the power of a received signal
10/03/2012EP2506517A1 Voice and data communication services using orthogonal sub-channels
10/03/2012EP2506516A1 Method of decoding optical data signals
10/03/2012EP2506515A1 Wireless communication system, wireless communication apparatus and wireless communication method
10/03/2012EP2506458A1 Coherent transponder for optical PS-QPSK signals
10/03/2012EP2506445A1 Connection device, system and method for transmitting signals between a control centre and at least one field device in an industrial assembly
10/03/2012EP2506428A1 Technique for automatic gain control
10/03/2012EP2506426A1 A method for amplification of a signal, and an amplifying device therefor
10/03/2012EP2504963A1 System and method for sending and receiving a digital signal over a radio pathway
10/03/2012EP2504940A1 Wireless data communications
10/03/2012CN202475478U Multi-carrier-frequency power line communication system
10/03/2012CN202475418U Signal sending device using power line
10/03/2012CN1795653B Multicarrier communication method and system, and apparatus
10/03/2012CN102714850A Method and apparatus for power scaling for multi-carrier wireless terminals
10/03/2012CN102714649A Data transmission method, data reception method, data modulation device, data demodulation device
10/03/2012CN102714648A WLAN device and method thereof
10/03/2012CN102714647A Codebook design and structure for multi-granular feedback
10/03/2012CN102714646A Method and apparatus for transmitting control information in a wireless communication system
10/03/2012CN102714645A Pilot patterns for OFDM systems with multiple antennas
10/03/2012CN102714643A IEEE 802.11ac preambles supporting legacy devices
10/03/2012CN102714642A Method and apparatus for channel estimation
10/03/2012CN102714641A System and method for bi-phase modulation decoding
10/03/2012CN102714640A Apparatus for pseudo-return-to-zero modulation
10/03/2012CN102714576A Feedback information in a multi-carrier wireless telecommunications network
10/03/2012CN102714562A Method and apparatus for receiving a downlink signal in a wireless communication system supporting carrier aggregation
10/03/2012CN102714529A Method and apparatus for uplink multi-carrier transmit diversity
10/03/2012CN102714526A Transmission method of data in multi-user wireless communication system
10/03/2012CN102714520A Method for data transfer and data transfer system
10/03/2012CN102711000A Orthogonal frequency division multiplexing passive optical network system capable of reducing signal noise and transmission method
10/03/2012CN102710996A Method and device for realizing passive ONU (optical network unit) in multi-user OFDM-PON (orthogonal frequency division multiplexing-passive optical network)
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