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)
03/1998
03/18/1998EP0829155A1 Doubly orthogonal code and frequency division multiple access communication system
03/18/1998CN1176723A Receiver for M-ary FSK signals
03/18/1998CN1176722A Method and apparatus for decoding an encoded signal
03/18/1998CN1176715A Dual-mode FM/CDMA communication system
03/18/1998CN1176560A System for receiving variable encoding formats and number of transmission channels
03/18/1998CN1176552A Method and apparatus for automatic gain control in quadrature phase shift keying demodulator
03/17/1998US5729607 Non-linear digital communications system
03/17/1998US5729577 Signal processor with improved efficiency
03/17/1998US5729576 Interference canceling receiver
03/17/1998US5729575 Transmitter and receiver system and method utilizing a pilot carrier notch data encoded signal
03/17/1998US5729570 Orthogonal code division multiple access communication system having multicarrier modulation
03/17/1998US5729558 Method of compensating for Doppler error in a wireless communications system, such as for GSM and IS54
03/17/1998US5729526 Asynchronous transfer mode type multimedia radiocommunication system
03/17/1998US5729388 System employing dissipative pseudorandum dynamics for communications and measurement
03/17/1998US5729182 Device for continuous phase modulation by frequency synthesizer with phase-locked loop
03/17/1998US5729173 Demodulation of quadrature amplitude modulation signals
03/13/1998CA2212439A1 Orthogonal modulation scheme
03/12/1998WO1998054860A1 Multi-carrier transmission method and data transmitter
03/12/1998WO1998010567A1 Reduction of the peak to average power ratio in multicarrier modulation system
03/12/1998WO1998010556A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010555A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010554A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010553A2 Improvements in, or relating to, control channels for telecommunications transmission systems
03/12/1998WO1998010552A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010551A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010550A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010549A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010548A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010547A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010546A2 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010545A1 Improvements in, or relating to, multi-carrier transmission systems
03/12/1998WO1998010528A1 Method and apparatus for crosstalk cancellation
03/12/1998WO1998010523A1 A zero-if receiver
03/12/1998WO1998004048A3 Transmission of digital and analog signals in the same band
03/12/1998WO1997049171A3 DSP implementation of a cellular base station receiver
03/12/1998DE19634486A1 Amplitude modulated wave generating circuit for anti-theft car alarm
03/11/1998EP0828366A2 Carrier recovery in a QAM receiver
03/11/1998EP0828365A2 Multicarrier modulation using complementarycodes and amplitude modulation
03/11/1998EP0828363A2 Multicode modem with a plurality of analogue front ends
03/11/1998EP0827655A1 Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system
03/11/1998CN1175865A Variable format radio pager having power saving mode during binary code transmission
03/11/1998CN1175849A System for forming program guides and video data for storage and transmission in different signal formats
03/11/1998CN1175836A Digital modulator with compensation
03/11/1998CN1175827A Small wireless radio
03/11/1998CN1175801A Balanced modulator
03/10/1998US5727035 Synchronization device for digital communications
03/10/1998US5727030 Automatic frequency control circuit applicable to a mobile communication system
03/10/1998US5727028 Method and apparatus for receiving a signal in a digital radio frequency communication system
03/10/1998US5727027 PSK signal demodulation method and apparatus
03/10/1998US5727023 Apparatus for and method of speech digitizing
03/10/1998US5727019 Digital modem
03/10/1998US5726992 Circuit for and method of assessing an RDS signal
03/10/1998US5726984 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
03/10/1998US5726978 In a telecommunications system
03/10/1998US5726973 Method and arrangement for synchronization in OFDM modulation
03/10/1998US5726794 DC bias controller for optical modulator
03/05/1998WO1998009411A1 Wireless powered communication device using power signal sampling and method
03/05/1998WO1998009398A2 Wideband code-division-multiple access system and method
03/05/1998WO1998009395A1 High capacity wireless communication using spatio-temporal coding
03/05/1998WO1998009385A2 Spatio-temporal processing for communication
03/05/1998WO1998009383A1 Frequency division multiplexed transmission of sub-band signals
03/05/1998WO1998009381A1 High capacity wireless communication using spatial subchannels
03/05/1998WO1998009304A1 Process for producing metal core laminations for modem transformers
03/05/1998WO1997027550A3 Communication system with multicarrier telephony transport
03/05/1998DE19635813A1 Verfahren zur Reduktion des Spitzenwertfaktors bei digitalen Übertragungsverfahren Method for reducing the peak factor in digital transmission method
03/05/1998CA2264644A1 Method and apparatus for sub-band modulation of signals for transmission and/or storage
03/05/1998CA2264600A1 Wideband code-division-multiple access system and method
03/05/1998CA2264170A1 High capacity wireless communication using spatial subchannels
03/04/1998EP0827311A2 Carrier recovery in a QAM receiver
03/04/1998EP0827310A2 Infra-red transmission of digital audio signals
03/04/1998EP0827309A2 Coded modulation using repetition and tree codes
03/04/1998EP0827301A2 Adaptive signal detection method and apparatus
03/04/1998EP0827300A2 Data receiver and data receiving method for punctured, convolutionally-encoded data
03/04/1998EP0827298A2 Data receiver and data receiving method
03/04/1998EP0827296A2 CDMA communication system
03/04/1998EP0826282A1 Data adapter
03/04/1998CN1175328A Digitally compensated direct conversion receiver
03/04/1998CN1175326A High-frequency device
03/04/1998CN1175176A Multi-frequency band mobile unit communication equipment
03/04/1998CN1175171A Method for device of carrier exalting and compensating in frequency spreading communication system
03/04/1998CN1175166A System for sampling and processing video data transmitted in different coding form
03/04/1998CN1175151A Synthronous device
03/04/1998CN1175145A Timed inner-inserting device for digital demodulator
03/04/1998CN1037636C Digital signal magnetic recording and reproducing apparatus
03/04/1998CA2211999A1 Digital communications system using complementary codes and amplitude modulation
03/03/1998US5724653 Radio receiver with DC offset correction circuit
03/03/1998US5724396 Signal processing system
03/03/1998US5724394 Viterbi decoding method and decoder capable of eliminating phase indeterminacy
03/03/1998US5724390 MLSE before derotation and after derotation
03/03/1998US5724388 Digital signal modulation analysis device
03/03/1998US5724382 Multimode spread spectrum communication system tolerant to varying channel characteristics
03/03/1998US5724380 Radio transmission system
03/03/1998US5724178 Amplitude modulation circuit having an electro-absorption modulator
03/03/1998US5724001 Method and apparatus for demodulating a frequency shift keyed signal
03/01/1998CA2184541A1 Method and apparatus for wavelet modulation of signals for transmission and/or storage
02/1998
02/28/1998CA2213625A1 Cdma communication system
02/26/1998WO1998008331A1 M-ary fsk receiver
02/26/1998WO1998008328A1 Data transmission by impulse position modulation and amplitude modulation
02/26/1998WO1998004073A3 Blind dfe and phase correction
02/26/1998WO1997050202A3 Method and apparatus for communicating information
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