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US20140294122 METHOD AND A DEVICE FOR DETERMINING AN EXTRINSIC INFORMATION  
A device for detecting an estimated value for a symbol at a given time, which is supplied to a phase modulation and transmitted via a transmission channel with a time-variable phase, provides a...
US20140341321 TRANSMITTER AND TRANSMISSION METHOD THEREOF  
A transmitter and a transmitting method thereof are provided. The transmitter is configured to generate a first symbol sequence which includes a plurality of first symbols in which adjacent...
US20140229800 APPARATUS AND METHOD FOR IMPROVED MODULATION AND CODING SCHEMES FOR BROADBAND SATELLITE COMMUNICATIONS SYSTEMS  
Modulation and coding schemes are provided for improved performance of wireless communications systems to support services and applications for terminals with operational requirements at...
US20120163489 PULSE SHAPING IN A COMMUNICATION SYSTEM  
A transmitter used in a communication system includes a raised cosine filter for transmit pulse shaping. A receiver in the communication system, designed to receive and demodulate transmissions...
US20110216852 Architectures and methods for code combiners  
Various embodiments are directed to systems and methods for combining a plurality of codes. The plurality of codes may be binary codes having possible logical values of −1 and +1 and may comprise...
US20130279548 DIFFERENTIAL PHASE SHIFT KEYING SYSTEM AND METHOD  
A variation on conventional DPSK binary modulation schemes is provided. One modulation scheme uses 3π/8 differential binary phase shift keying (3π/8-DBPSK) where one symbol is transmitted by phase...
US20140286455 METHOD AND APPARATUS OF GENERATING PILOT SEQUENCE  
A method of transmitting pilots id disclosed. The method of transmitting pilots includes transmitting pilots over N orthogonal frequency division multiplexing (OFDM) symbols, wherein a pilot at...
US20150043680 Rhombic-QPSK Modulation for Improved Tolerance to Nonlinearity in Fiber Communication Systems  
This invention proposes an alternative modulation format for channels that present improved performance when such channels co-propagate with existing intensity modulated channels. This modulation...
US20110080880 TRANSMISSION DIVERSITY SCHEME ON PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) WITH ACK/NACK DIFFERENTIATION  
A method for transmitting uplink control information (UCI) using a physical uplink control channel (PUCCH) transmit diversity scheme is described. A UCI is coded with a Forward Error Correction...
US20140153558 PHY LAYER OPTIONS FOR BODY AREA NETWORK (BAN) DEVICES  
In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath...
US20130322567 Generation and Application of a Sub-Codebook of an Error Control Coding Codebook  
There is provided a method of encoding and decoding data using an error control code having a codebook G. The codebook G is a sub-codebook of a codebook P. Each codeword g in the sub-codebook G...
US20100290449 PREAMBLE EXTENSIONS  
Systems and/or methods for communication that generate a plurality of spatial streams are disclosed. Each of the spatial streams comprises a plurality of symbols. At least a portion of a training...
US20130208830 SWITCHED-LOAD RESONATING TRANSMITTER FOR PASSBAND POWER LINE COMMUNICATION  
A switched-load, resonant transmitter (T2) for inbound signaling in a two-way automatic communications system (TWACS). The load is purely reactive containing both inductive (L) and capacitive (C)...
US20100284491 Method and Apparatus for Obtaining Symbol Mapping Diversity, Creating Constellation Map, and Modulating  
A method and apparatus for obtaining a Symbol Mapping Diversity (SMD), creating a constellation map, and modulating are disclosed.
US20110002416 METHOD OF COMMUNICATING FOR SMART UTILITY NETWORK USING TV WHITE SPACE AND APPARATUS FOR THE SAME  
There are disclosed a method of communicating for a smart utility network using a TV white space and an apparatus for the same. The method of communicating for a smart utility network using a TV...
US20120140854 RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION METHOD, AND COMMUNICATION SYSTEM  
A radio communication device which when transmitting both a first information sequence, on which π/4-shift differential phase shift modulation is performed, as a delayed wave and a second...
US20080181332 Modulating A Signal Using A Fractional Phase Modulator  
A system operable to modulate a signal according to phase-shift keying (PSK) modulation includes one or more phase modulators that comprise one or more fractional phase modulators. A fractional...
US20120219093 METHOD AND APPARATUS FOR CHANNEL QUALITY MEASUREMENTS  
A method and apparatus for measuring channel quality over which has been transmitted a sequence of symbols produced by encoding and constellation mapping a source data element sequence. A sequence...
US20100067617 Jumpless Phase Modulation In A Polar Modulation Environment  
The present disclosure relates to circuits and methods for improving the performance of a polar modulator by maintaining the input to a phase modulator.
US20120114076 VARIABLE PHASE SHIFTER-ATTENUATOR  
A phase shifter-attenuator system having: a controller for producing a digital word representative of a predetermined phase shift and attenuation provided to an input signal; and a phase...
US20080181618 Modulating A Signal According To 2n-PSK Modulation  
A system operable to modulate a signal according to phase-shift keying (PSK) modulation includes a translator and a phase modulation system. The translator receives data signals and translates the...
US20100316144 EFFICIENT FRAMING SCHEMES FOR SUPPORTING VCM/ACM IN DIGITAL SATELLITE TRANSMISSION SYSTEMS  
A digital communication system and method using a digital signal having a plurality of frames to transmit data, including a first frame and a second frame, wherein each of the plurality of frames...
US20100034316 Millimeter wave radio with phase modulation  
Millimeter wave radio with phase modulation. In preferred embodiments each of the two radios in a link uses a single aperture to transmit radiation in one of the two bands, and receive radiation...
US20090323782 Non-Federated Multi-Function KA-Band Exciter System and Method  
Provided is a non-federated multi-function exciter. The non-federated multi-function exciter includes a waveform generator subsystem operable to provide waveforms programmable in time, duration,...
US20110122970 DUAL PRUPOSE MODULATOR  
The present invention provides a single modulator capable of transmitting an input according to a first and a second modulation technique. The first modulation technique represents changes in the...
US20070025468 GMSK/8-PSK mix-mode support for GSM/GPRS/EDGE compliant handsets  
A GMSK/8-PSK mix-mode support for GSM/GPRS/EDGE compliant handsets is provided and may comprise transmitting bursts of different modulation types within a single GSM frame, where the different...
US20060098761 Multi-mode transmitter  
A radio frequency module (500) that uses reconfigurable and reprogrammable hardware to generate and condition RF signals that have one of several selectable modulation formats. A modulation...
US20130083867 TRANSMIT DIVERSITY FOR PRE-CODED RADIO CONTROL SIGNALS  
A method sends uplink control information from a user equipment to a serving node of a radio communications system by first encoding uplink control information bits into symbols. The encoded...
US20090022492 DQPSK Transmitter With Parallel Precoder And High-Speed DQPSK Data Stream Realignment  
The present invention utilizes field programmable gate arrays (FPGAs) to implement a parallel differential quadrature phase shift keying (DQPSK) precoder and a DQPSK optical transmitter with an...
US20090067544 METHOD FOR RECOVERING A BASEBAND SIGNAL FROM AN RF SIGNAL  
By shifting an RF signal to IQ components of a modulated baseband signal directly, the zero-IF technology and IQ interface are applied in ATSC, NTSC, and PAL systems, and VSB and SSB modulations....
US20090116849 DQPSK modulation apparatus and DQPSK modulation method  
An optical transmitting apparatus includes a branching unit that branches light output from a light source into light beams, a phase control unit and an ABC circuit that control the phase of one...
US20120236966 MODULATION METHOD AND RADIO COMMUNICATION SYSTEM  
An input digital signal is periodically and alternately subjected to first modulation and second modulation, being thereby converted into a pair of a baseband I signal and a baseband Q signal. The...
US20080075198 Method for I/Q signal adjustment  
A method for I/Q adjustment is disclosed. The method includes delaying phases of an in-phase signal and a quadrature signal with a predetermined angle for generating an in-phase delay signal and a...
US20150078487 METHOD AND APPARATUS FOR CONSTANT ENVELOPE MODULATION  
Certain aspects of the present disclosure relate to a method for modulating single carrier signals using constant envelope 2-CPM modulation and quasi-constant envelope filtered continuously...
US20130129020 METHOD AND APPARATUS FOR CONSTANT ENVELOPE MODULATION  
Certain aspects of the present disclosure relate to a method for modulating single carrier signals using constant envelope 2-CPM modulation and quasi-constant envelope filtered continuously...
US20100310009 METHOD AND APPARATUS FOR CONSTANT ENVELOPE MODULATION  
Certain aspects of the present disclosure relate to a method for modulating single carrier signals using constant envelope 2-CPM modulation and quasi-constant envelope filtered continuously...
US20150016569 ANTENNA MODULATION METHOD APPLICABLE TO WIRELESS TRANSMITTER AND TRANSMITTER USING THE SAME  
An antenna modulation method applicable to a transmitter comprising a processing unit which is configured to execute functions including at least but not limited to receiving a symbol represented...
US20090280758 WIRELESS COMMUNICATION UNIT AND POWER CONTROL SYSTEM THEREOF  
A wireless communication unit comprises a transmitter having an analogue feedback power control loop having a power control function arranged to set an output power level of the transmitter. The...
US20100220798 PREAMBLE FORMATS SUPPORTING HIGH-THROUGHPUT MIMO WLAN AND AUTO-DETECTION  
A method for generating a preamble of an Orthogonal Frequency Division Multiplexed (OFDM) data frame for a multiple input multiple output (MIMO) wireless communication includes determining at...
US20140355719 METHOD AND DEVICE FOR PHASE ADJUSTMENT BASED ON CLOSED-LOOP DIVERSITY FEEDBACK  
A mobile communications method, device, and system for adjusting a phase parameter in a diversity signal, based at least in part on phase feedback from a base station. While in uplink...
US20090074109 High power high linearity digital phase shifter  
A digital phase shifter suitable for high power RF applications is disclosed. A plurality of MEMs switches selectively couple delay lines into the RF signal path providing adjustable phase shift...
US20120045021 TRANSMISSION METHOD AND APPARATUS FOR MULTI-ANTENNA RETRANSMISSION  
A transmission method for multi-antenna retransmission is provided, comprising steps of: generating the bits to be transmitted by respective antennas; mapping the bits to be transmitted by the...
US20080037684 COMMUNICATION SYSTEM FOR UTILIZING SINGLE TONE TESTING SIGNAL HAVING SPECIFIC FREQUENCY OR COMBINATIONS OF DC VALUE AND SINGLE TONE TESTING SIGNAL TO CALIBRATE IMPAIRMENTS IN TRANSMITTING SIGNAL  
A communication system for determining a target calibration parameter for calibrating impairments in a transmission signal is disclosed. The communication system includes a carrier signal...
US20060098762 Driver circuit for driving a power amplifier  
A circuit for providing AM/PM modulation is described. The circuit includes a signal generator, which provides two phase modulated (PM) signals used to form two drive signals which are later...
US20060093064 Phase modulating and combining circuit  
A transmitter includes a modulating and combining circuit to which signals are supplied and modulated into in-phase and quadrature-phase signals. The in-phase and quadrature-phase signals are...
US20100061403 High Efficiency Preambles for Communications Systems Over Pseudo-Stationary Communication Channels  
A method includes appending a preamble to a data packet and transmitting the preamble and data packet over a communication channel in the network. The preamble may be a Beacon, Admission,...
US20060193398 Data retransmission method employing symbol rearrangement over the galois field  
A method for transmitting data from a transmitter to a receiver of an ARQ communication system comprising the step of encoding data received from a signal source using a forward error correction...
US20100061482 Method for transmitting data using phase shift based precoding and transceiver supporting the same  
A method of transmitting data using cyclic delay in a multi-antenna system using a plurality of subcarriers and a transceiver supporting the same are disclosed. More particularly, a method of...
US20090310708 Transmitter and Method for Transmitting Soft Pilot Symbols in a Digital Communication System  
A transmitter, channel coder, and method for coding and transmitting a sequence of symbols in a digital communication system utilizing soft pilot symbols. In one embodiment, the transmitter...
US20060120480 Method and system for scaling a multi-channel signal  
A communication unit is provided having a transmitter and a processor (103). The processor (103) receives information (105) representative of a configuration of physical channels (107). The...

Matches 1 - 50 out of 204 1 2 3 4 5 >