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)
02/2014
02/26/2014CN102316054B Timing estimation method and device of wireless broadband communication system
02/26/2014CN102270995B System and method for transmitting a baseband real signal with a non-constant envelope using a polar transmitter
02/26/2014CN102231648B Single-carrier-and-multi-carrier-based hybrid transmission system
02/26/2014CN102204133B Optical signal processing method and apparatus
02/26/2014CN102202248B 正交频分复用无源光网络系统 Orthogonal frequency-division multiplexing passive optical network system
02/26/2014CN102201837B Communication node and procedure for various means of transmission
02/26/2014CN102171950B Digital signal processor, communication device, communication system and method for operating a digital signal processor
02/26/2014CN102164109B Downlink frequency offset compensation method and repeater used for performing downlink frequency offset compensation
02/26/2014CN102057644B Methods and arrangements for estimating IQ-imbalance
02/26/2014CN102047580B Mobile communication system, reception device, and method
02/26/2014CN102006128B Terminal frequency deviation detection method, device and system
02/26/2014CN101997611B Frequency tracking method, device and coherent detection receiving device
02/26/2014CN101964770B OFDM (Orthogonal Frequency Division Multiplexing) subcarrier modulation method and system
02/26/2014CN101909032B Signal receiving apparatus, method and system
02/26/2014CN101843064B Apparatus for transmitting and receiving a signal and method for transmitting and receiving a signal
02/26/2014CN101826908B Data transmission method of relay system
02/26/2014CN101729465B Method and device for measuring signal to noise ratio and application thereof
02/26/2014CN101689935B Delay control in a mobile communication system
02/25/2014USRE44776 Robust fine frequency and time estimation in mobile receivers
02/25/2014US8660567 Radio communication apparatus and subcarrier assignment method
02/25/2014US8660513 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
02/25/2014US8660221 Fast and robust AGC apparatus and method using the same
02/25/2014US8660219 Circuit and method for distinguishing between an OFDM signal and a radar signal
02/25/2014US8660218 Systems and methods for signal detection and estimation
02/25/2014US8660217 Methods and apparatus for low complexity soft-input soft-output group detection
02/25/2014US8660216 Method and apparatus for mitigating the residual CFO effect on channel estimation for OFDM receivers
02/25/2014US8660215 Decoding algorithm for frequency shift key communications
02/25/2014US8660214 Quadrature bandpass-sampling OFDM receiver
02/25/2014US8660212 Interference classification with minimal or incomplete information
02/25/2014US8660211 Digital broadcast transmission and receiving system having an improved receiving performance and signal processing method thereof
02/25/2014US8660210 Method of packet format dependent selection of MIMO-OFDM demodulator
02/25/2014US8660209 Transmitter and frequency deviation reduction method thereof
02/25/2014US8660208 Apparatus and methods for QAM modulation using dual polar modulation
02/25/2014US8660205 Energy efficient constellation method and system
02/25/2014US8660204 Data transmitter and method for forming symbol thereof
02/25/2014US8660198 Multipath diversity in a quadrature bandpass-sampling OFDM receiver
02/25/2014US8660196 Communications system using beamforming
02/25/2014US8660094 Method and apparatus for data transmission using a plurality of resources in a multiple antenna system
02/25/2014US8659987 Adaptive modulation for fixed wireless link in cable transmission system
02/25/2014CA2712983C Distributed virtual resource block allocation for ofdma
02/20/2014WO2014028501A1 Ofdm speed estimation
02/20/2014WO2014028134A1 Methods and arrangements for phase tracking in wireless networks
02/20/2014WO2014028133A1 Methods and arrangements for channel updates in wireless networks
02/20/2014WO2014027943A2 Multi-user multiple input multiple output radio communications
02/20/2014WO2014027843A1 Apparatus and method for generating gaussian pulse and ultra wideband communication apparatus for generating gaussian pulse
02/20/2014WO2014027301A2 Communicating over a desired tone in the presence of interference having an unknown magnitude that is substantially constant
02/20/2014US20140050285 Data receiving circuit and semiconductor device
02/20/2014US20140050283 Millimeter-wave slot antenna systems and methods with improved gain
02/20/2014US20140050281 Method and apparatus for controlling update of digital pre-distortion coefficient
02/20/2014US20140050260 Switched continuous time linear equalizer with integrated sampler
02/20/2014US20140050259 Methods and arrangements for phase tracking in wireless networks
02/20/2014US20140050255 Methods and arrangements for channel updates in wireless networks
02/20/2014US20140050254 Methods and arrangements for channel updates in wireless networks
02/20/2014US20140050253 Reducing Distortion in Repeaters for OFDM Signals
02/20/2014US20140050250 Apparatus and method for generating gaussian pulse and ultra wideband communication apparatus for generating gaussian pulse
02/20/2014US20140050149 Ofdm/ofdma frame structure for communication systems
02/19/2014EP2698960A2 Method and telecommunications device for analyzing multiple carriers in radio frequency signal
02/19/2014EP2698959A1 Method for modulating navigation signal
02/19/2014EP2698958A2 Digital analog predistortion processing apparatus, signal transmission system and signal transmission method
02/19/2014EP2698938A1 Method of detecting generation of transmission signal using code sequence, communication system and measuring system
02/19/2014EP2697948A1 Method and apparatus for implementing high-order modulation schemes using low-order modulators
02/19/2014EP2697947A2 Methods and systems for communicating
02/19/2014EP2697946A1 System and method for two-way relaying with beamforming
02/19/2014EP2697927A1 Systems and methods for range extension of wireless communication in sub-gigahertz bands
02/19/2014CN203446034U OFDM-based GSM voice encryption system
02/19/2014CN1921468B Device and method for reducing apex-average ratio of crossing frequency division multiplexing communication system
02/19/2014CN103597791A In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters
02/19/2014CN103596262A PSS synchronization method and device of downlink single channel in LTE system
02/19/2014CN103595688A Visible light communication multiple access method and system based on carrierless amplitude/phase modulation
02/19/2014CN103595687A Apparatus for transmitting and receiving signal and method for transmitting and receiving signal
02/19/2014CN103595686A Apparatus for transmitting and receiving signals and method for transmitting and receiving signals
02/19/2014CN103595685A SIM-OFDM communication method
02/19/2014CN103595684A Discontinuous carrier aggregation LTE-advanced signal analysis method and device
02/19/2014CN103595683A Carrier frequency error estimation and compensation system and method of multi-carrier spread spectrum communication
02/19/2014CN103595682A Frame synchronization method, device and receiver for OFDM
02/19/2014CN103595681A Method for lowering PAPR of multi-carrier communication signal
02/19/2014CN103595680A Orthogonal code time division multi-sub-channel spectrum spread technique system and application
02/19/2014CN103595679A Method for reducing peak-to-average ratio of LTE uplink single-carrier frequency-division multiple access signal
02/19/2014CN103595678A A discrete pilot signal generation method for digital audio broadcasting signals and an apparatus
02/19/2014CN103595677A A method and an apparatus for beacon signal generation in a communication system
02/19/2014CN103595676A Continuous phase 8PSK modulation method
02/19/2014CN103595675A Continuous phase 8PSK modulation method
02/19/2014CN103595674A Modulation-demodulation system of voice signal transmitted through mechanical carrier
02/19/2014CN103595673A Audio data transmission method
02/19/2014CN103595672A Audio data transmission method
02/19/2014CN103595669A Multi-antenna initial ranging method and device
02/19/2014CN103595667A Wireless channel multipath parameter estimation method based on OFDM signals
02/19/2014CN103595444A Apparatus and method for ultra wideband communication
02/19/2014CN102369775B Processing method, device and system for charging
02/19/2014CN102332935B Carrier compensation system and carrier compensation method
02/19/2014CN102318300B Direct current (DC) compensating method, DC compensator and baseband signal processor
02/19/2014CN102316461B Sending method, device and system in relay system
02/19/2014CN102299883B Crest reduction method and device of broadband signal
02/19/2014CN102271005B Method and device for capturing carrier frequency in wireless communication system
02/19/2014CN102255839B Channel estimation method and device applied to China mobile multimedia broadcasting (CMMB) system
02/19/2014CN102171981B Method of transmitting control signal in wireless communication system
02/19/2014CN102164110B Method and system for balancing frequency domain
02/19/2014CN102142858B Range extension method and device for a wireless local area network
02/19/2014CN102113284B OFDM frame synchronisation method and system
02/19/2014CN102055702B Transmission method, base station, relay station and system for down link demodulation reference signal
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