Patents for H04L 27 - Modulated-carrier systems (89,721)
05/2009
05/13/2009CN101433041A Code error detecting device, wireless system and code error detecting method
05/13/2009CN101433040A Communications system with selective Baseband Pilot Injected Carrier (BPIC) and input data modulation and related methods
05/13/2009CN101433039A Communications system with baseband pilot injected carrier (BPIC) modulation/demodulation and frame recovery and related methods
05/13/2009CN101433007A Channel quality signaling
05/13/2009CN101431803A TDD system random access method and device
05/13/2009CN101431721A Wireless resource scheduling method for multi-base station MBS
05/13/2009CN101431506A Method and apparatus for regulating frequency step value of subcarrier
05/13/2009CN101431505A Emission system and method for reducing peak-to-average power ratio of orthogonal frequency division multiplexing system
05/13/2009CN101431504A Space-frequency modulation method for high-performance digital television ground broadcasting transmitter
05/13/2009CN101431503A Space-frequency modulation method for digital television ground broadcasting transmitter
05/13/2009CN101431502A Space-frequency modulation method for high-performance digital television ground broadcasting transmitter
05/13/2009CN101431501A Modulation method for high-performance digital television ground broadcasting transmitter
05/13/2009CN101431500A Modulation method for anti-fading digital television ground broadcasting transmitter
05/13/2009CN101431499A Space-frequency modulation method for anti-interference digital television ground broadcasting transmitter
05/13/2009CN101431498A Demodulation method and device for flexible sub-carrier modulation system
05/13/2009CN101431497A Multi-antenna signal transmission method adopting time domain and frequency domain combined orthogonal frequency division multiplexing
05/13/2009CN101431496A Modulation-demodulation method for fraction Fourier transform domain with unequal power spectral density
05/13/2009CN101431495A Receiver
05/13/2009CN101431494A Null symbol element detection apparatus and method
05/13/2009CN101431493A System and method for OFDM grouping detection and frequency deviation estimation
05/13/2009CN101431492A Method for timing estimation of OFDM communication system signal
05/13/2009CN101431491A Frequency domain zero correlation block code generation method and device, and multi-carrier-code division multiple access system
05/13/2009CN101431490A Pilot frequency insertion method, apparatus, base station and customer equipment of orthogonal frequency division multiplexing system
05/13/2009CN101431489A 光传输系统 The optical transmission system
05/13/2009CN101431392A Setting method and modulating method for ST-MTCM gridding chart
05/13/2009CN101431369A Downlink pilot transmission method for TDD system and its implementing apparatus
05/13/2009CN101431357A Data transmission method and apparatus
05/13/2009CN101431353A Control method and apparatus for delivering power amplifier
05/13/2009CN100488186C Radio transmitter, radio receiver, and multilever modulation communication system
05/13/2009CN100488185C Radio communication system, radio transmitter and radio receiver
05/13/2009CN100488184C OFDM communication system and method
05/13/2009CN100488183C Channel estimation for orthogonal frequency division multiplexed (OFDM) signals
05/13/2009CN100488182C Method for real time intercepting carrier signal in short distance radio network
05/13/2009CN100488065C Adaptive frequency deviation evaluation device of receiver and method
05/13/2009CN100488063C Distortion compensation apparatus
05/12/2009US7532870 Method and apparatus for DC offset removal
05/12/2009US7532694 Apparatus and method for compensating for distortion caused by a phase slew of a frame reference signal in an asynchronous wideband code division multiple access communication system
05/12/2009US7532687 Dual stage automatic gain control in an ultra wideband receiver
05/12/2009US7532686 Correlator and receiving apparatus utilizing the same
05/12/2009US7532684 Direct RF complex analog to digital converter
05/12/2009US7532683 Unified receiver for layered and hierarchical modulation systems
05/12/2009US7532682 Quadrature modulation without carrier
05/12/2009US7532681 Wireless communication apparatus
05/12/2009US7532680 Multi-mode radio frequency transmitter
05/12/2009US7532679 Hybrid polar/cartesian digital modulator
05/12/2009US7532678 Method for transmitting data by multi-carrier modulation
05/12/2009US7532676 Single sideband and quadrature multiplexed continuous phase modulation
05/12/2009US7532675 Techniques to time vary pilot locations in wireless networks
05/12/2009US7532674 Transmitting device, transmitting method, and storage medium
05/12/2009US7532673 Transport of modulation symbols in a communications system
05/12/2009US7532672 Codecs providing multiple bit streams
05/12/2009US7532668 Transmitter and transmitting method, receiver and receiving method, pulse detection method, and tracking method
05/12/2009US7532661 Additional hierarchical preamble for support of FDMA channel in a multi-band OFDM system
05/12/2009US7532602 Information transmission method, mobile communications system, base station and mobile station
05/12/2009US7532567 Radio communication system, radio transmitter and radio receiver
05/12/2009US7532566 Use of identifier of remote unit for downstream signals
05/12/2009US7532565 Mapping data tones onto guard tones for a multi-band OFDM system
05/12/2009US7532564 Sub-banded ultra-wideband communications systems
05/12/2009US7532562 High-data-rate communication link using multiple lower rate modems
05/12/2009US7532152 Automotive radar system
05/12/2009US7532055 CMOS-based receiver for communications applications
05/12/2009CA2391336C Method and circuit for acquisition
05/07/2009WO2009059250A2 Synchronization in a broadcast ofdm system using time division multiplexed pilots
05/07/2009WO2009059249A2 Synchronization in a broadcast ofdm system using time division multiplexed pilots
05/07/2009WO2009059179A1 Sign operation instructions and circuitry
05/07/2009WO2009058791A1 Modular powerline adapters and methods of use
05/07/2009WO2009058153A1 Methods and apparatus for communicating information using different types of symbols
05/07/2009WO2009058072A1 Channel-dependent frequency-domain scheduling in an orthogonal frequency division multiplexing communications system
05/07/2009WO2009057566A1 Mobile communication system, base station device, user device and method
05/07/2009WO2009057312A1 Transmission device
05/07/2009WO2009057183A1 Network encoding method and network encoding apparatus
05/07/2009WO2009057040A1 A method to discriminate a real echo peak from an aliased echo peak
05/07/2009WO2009056801A1 Data processing apparatus and method
05/07/2009WO2009056044A1 Peak value cancellation method, peak value cancellation device and reference peak value cancellation signal producing device
05/07/2009WO2009055987A1 A timing coarse synchronization acquisition method in a mobile communication system
05/07/2009WO2009055897A1 All-digital multi-standard transmitter architecture using delta- sigma modulators
05/07/2009WO2009039396A3 Auto-discovery in a switch
05/07/2009WO2009032730A3 Apparatus and method for modulating an amplitude, phase or both of a periodic signal on a per cycle basis
05/07/2009WO2009031862A3 Method of generating reference signal in wireless communication system
05/07/2009WO2009031801A3 Method of transmitting data using repetition coding
05/07/2009WO2009028912A3 Apparatus for transmitting and receiving a signal and method for transmitting and receiving a signal
05/07/2009WO2009023799A3 Communication system using a shared baseband processor for transmission and reception over different bandwidths
05/07/2009WO2009020935A3 Rate adaptive modem
05/07/2009WO2009009541A3 Methods and apparatus for communicating in a peer to peer system where device communications may partially interfere with one another
05/07/2009WO2008118882A3 Method and apparatus for determining broadcast messages in wireless signals
05/07/2009WO2008012807A3 Multi input multi output wireless communication reception method and apparatus
05/07/2009WO2007066952A3 Multi-fa processing system and its digital band-pass filtering method
05/07/2009WO2007066938A3 Method for controlling signal power level to control contention between mobile terminals, and signal power level controller in orthogonal frequency division multiplexing system
05/07/2009US20090119554 Backplane emulation technique for automated testing
05/07/2009US20090119088 Method of Designing, Modelling or Fabricating a Communications Baseband Stack
05/07/2009US20090119043 Phase imbalance monitoring apparatus, amplitude imbalance monitoring apparatus, and apparatus using the same
05/07/2009US20090117862 Method for the multi-antenna transmission of a linearly-precoded signal, corresponding devices, signal and reception method
05/07/2009US20090116849 DQPSK modulation apparatus and DQPSK modulation method
05/07/2009US20090116593 Circuit for providing automatic adaptation to frequency offsets in high speed serial links
05/07/2009US20090116592 Receiver and channel estimation method
05/07/2009US20090116591 Spectral decomposition of large signals in a narrow-range sampling system
05/07/2009US20090116590 Apparatus and method for detecting signal in multi-antenna system
05/07/2009US20090116589 Performance-based link adaptation techniques
05/07/2009US20090116588 Wireless communications apparatus
05/07/2009US20090116587 Method, system and apparatus for generating constant amplitude zero autocorrelation sequences