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)
09/2012
09/05/2012EP2494704A2 Methods and apparatus for multi-user mimo transmissions in wireless communication systems
09/05/2012CN202424766U Orthogonal frequency division multiplexing (OFDM) communication device for mine
09/05/2012CN1917397B Method for estimating channel in MIMO-OFDM system
09/05/2012CN1902867B Symbol de-mapping methods in multiple-input multiple-output systems
09/05/2012CN1902837B Multicarrier receiver with antenna selection and maximum ratio combining
09/05/2012CN1826745B Radio transmitter apparatus and method
09/05/2012CN1710900B Method and device for reducing radio signal dynamic range
09/05/2012CN102656856A Pilot subcarriers in wireless transmissions
09/05/2012CN102656855A Frequency diversity and phase rotation
09/05/2012CN102656826A Optical OFDM transmission having a variable transmission rate
09/05/2012CN102656813A Crosstalk control method and apparatus using a bandwidth-adaptive precoder interface
09/05/2012CN102655680A Method and system for sending survey reference signal on backhaul link
09/05/2012CN102655674A System and methods for back-off and clipping control in wireless communication systems
09/05/2012CN102655492A Cooperative OFDMA (Orthogonal Frequency Division Modulation) system subcarrier distribution method based on physical layer safety
09/05/2012CN102655491A Frequency shift estimation method and system for coherent demodulation frequency shift keying modulating signals
09/05/2012CN102655490A Coarse bin frequency synchronization in a communication system
09/05/2012CN102655489A Collaborative relay system and transmission method
09/05/2012CN102655488A Methods and systems for coherent multi-subcarrier source generation
09/05/2012CN102655487A Compensating device, compensation module, compensation parameter calculating module and receiver thereof
09/05/2012CN102655393A ASK (Amplitude Shift Keying) modulator with self-calibration function
09/05/2012CN102075868B Multimedia broadcast multicast service (MBMS) data forwarding and transmitting method, device and system
09/05/2012CN101867545B Frequency synthesizer of full-frequency range multi-band orthogonal frequency division multiplexing ultra-wideband radio frequency transceiver
09/05/2012CN101854723B Transmitting apparatus and radio resource assigning method
09/05/2012CN101834669B Frequency shift keying (FSK) optical modulation signal generator based on silicon-based micro ring resonator
09/05/2012CN101815056B IQ unbalanced calibration method and equipment of baseband signals in wireless communication receiving machine
09/05/2012CN101814903B Tunable ferro-electric filter
09/05/2012CN101808071B Synchronizing method of OFDM (Orthogonal Frequency Division Multiplexing) system
09/05/2012CN101795254B Parallel carrier recovery method without data assistance and system thereof
09/05/2012CN101754230B Carrier polymerizing method in FDD system and device thereof
09/05/2012CN101753505B Method for synchronizing downlink time and frequency of OFDM system
09/05/2012CN101729472B Carrier recovery method and device for all-digital receiver
09/05/2012CN101719778B Method for frame level time synchronization acquisition of multi-template ultra-wide band signal
09/05/2012CN101714961B Digital signal transmitting method and equipment based on modulated carriers of equal amplitude and equal period
09/05/2012CN101699773B Downstream synchronic PN code capturing method for CDMA 2000 1x EV-DO system
09/05/2012CN101699772B FFT-based method for capturing PN sequence in CDMA 2000 1x EV-DO system
09/05/2012CN101651644B Circuit and method for demodulating modulated signals
09/05/2012CN101645866B An apparatus for fft, inverse transformation and method of reducing its power consumption
09/05/2012CN101635619B Method, base station and system for transmitting subcarriers
09/05/2012CN101631101B Scrambling realization method
09/05/2012CN101610232B Amplitude suppressing apparatus and signal transmitting apparatus
09/05/2012CN101605117B Pilot frequency distributing method and system
09/05/2012CN101582867B Transmission apparatus and method, reception apparatus and method
09/05/2012CN101577691B Pilot frequency distributing method and pilot frequency power optimizing method
09/05/2012CN101577581B Channel estimation method
09/05/2012CN101573999B Base station, use device, and method
09/05/2012CN101552754B Carrier leakage corrective system for radio frequency transceiver
09/05/2012CN101547178B Linearization device and linearization method in broad-band communication system
09/05/2012CN101534559B Resource allocator and resource allocation method
09/05/2012CN101534267B Pre-coding method and pre-coding device
09/05/2012CN101505186B Multi-mode high-speed modem
09/05/2012CN101499814B Parameter measurement method for WCDMA system co-channel multi-cell downlink
09/05/2012CN101478331B Constructing method for dual time frequency non-repeat non-complete frequency hopping sequence
09/05/2012CN101478328B Method and apparatus for frequency bias estimation and compensation
09/05/2012CN101459640B OFDM ultra-wideband communication system based on sub-carrier code and communication method thereof
09/05/2012CN101453237B Method and apparatus for searching downlink synchronous code
09/05/2012CN101431506B Method and apparatus for regulating frequency step value of subcarrier
09/05/2012CN101371543B A method for transmitting and receiving data using a plurality of carriers
09/05/2012CN101364964B Frequency bias estimation method for radio communication system uplink
09/05/2012CN101359926B Receiver, channel estimation method and apparatus
09/05/2012CN101356648B Method and apparatus for fast fft processing of paging information
09/05/2012CN101351982B Automatic selection of coherent and noncoherent transmission in a wireless communication system
09/05/2012CN101282324B Method for managing combined wireless resource of self-adaption MIMO-OFDM system based on across layer
09/05/2012CN101282154B Method for transmitting relay section guiding code of wireless relay network
09/05/2012CN101257481B System and method for cutting peak of preprocess discontinuousness allocating multiple carrier waves
09/05/2012CN101252569B Apparatus and method for receiving signal
09/05/2012CN101242214B Method for generating pilots for MIMO communication systems
09/05/2012CN101232480B Method and device for regulating frequency offset
09/05/2012CN101197587B Pilot symbols transmission method and device for radio communication system
09/05/2012CN101167323B System and method for channel estimation in a delay diversity wireless communication system
09/05/2012CN101162939B Gain factor processing method and equipment
09/05/2012CN101159470B Method of mapping downlink control signaling indication channel to physical resource
09/05/2012CN101159467B Receiving method of deleting parallel subchannel transmitting interference
09/05/2012CN101156404B Demodulation and modulation method and device for IR receivers
09/05/2012CN101120515B Method and apparatus for estimating gain offsets for amplitude-modulated communication signals
09/05/2012CN101072448B Method to estimate multiple round trip delays attached to cellular terminals
09/05/2012CN101036360B 半导体器件 Semiconductor devices
09/05/2012CN101022444B Method and apparatus for channel state information generation in a DVB-T receiver
09/04/2012USRE43627 Apparatus and method for multiplexing packets for broadcast services in a mobile communication system based on orthogonal frequency division multiplexing
09/04/2012US8260471 Energy distribution management system
09/04/2012US8260465 Data communication in a multi-wire irrigation control system
09/04/2012US8259881 Interference-weighted communication signal processing systems and methods
09/04/2012US8259878 Apparatus and method for receiving signal in wireless communication system using multi antenna
09/04/2012US8259877 Method and device for automatic gain control with limited jitter
09/04/2012US8259876 System and method for tuning a radio receiver
09/04/2012US8259875 Technique for determining a frequency offset
09/04/2012US8259873 Method and apparatus for correlating two data sections
09/04/2012US8259871 Reception device, transmission device, and adaptive transmission rate control method
09/04/2012US8259870 System and method for decoding a received data sequence
09/04/2012US8259869 Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system
09/04/2012US8259866 Decoding scheme using A-priori information about transmitted messages
09/04/2012US8259865 Methods and apparatus for adapting channel estimation in a communication system
09/04/2012US8259864 Methods and systems for fourier-quadratic basis channel estimation in OFDMA systems
09/04/2012US8259863 Method for transmitting and decoding signals considering repeatedly transmitted information
09/04/2012US8259862 Receivers and symbol decoders thereof
09/04/2012US8259859 Method and system for carrier recovery for QAM
09/04/2012US8259857 Methods and systems for increased communication throughput
09/04/2012US8259854 Channel estimation using common and dedicated pilots
09/04/2012US8259853 Digital broadcast receiving device
09/04/2012US8259851 Method and apparatus of cross-correlation
09/04/2012US8259850 UWB transmission apparatus and UWB transmission method
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