FREE patent keyword monitoring and additional FREE benefits. http://images1.freshpatents.com/images/triangleright (1K) REGISTER now for FREE triangleleft (1K)
FreshPatents.com Logo    FreshPatents.com icons
Monitor Keywords Patent Organizer File a Provisional Patent Browse Inventors Browse Industry Browse Agents


Pulse Or Digital Communications > Transceivers

Transceivers

Transceivers patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

07/17/14 - 20140198831 - Radio frequency signal transceiving and processing method, device, and base station system
A radio frequency signal transceiver includes: a transmission circuit configured to perform power amplification on an input first analog signal, wirelessly transmit the first analog signal after power amplification, and output the first analog signal after power amplification to a pre-distortion circuit; the pre-distortion circuit configured to convert the first...

07/10/14 - 20140192844 - Fully integrated dc offset compensation servo feedback loop
The fully integrated DC offset compensation servo feedback loop is an integrator that measures the output signal DC component, and then feeds back and subtracts the measured DC component from the input signal. A larger integrator time constant lowers the high pass corner frequency, which must be very small in...

07/10/14 - 20140192845 - Method and apparatus for an adaptive multi-antenna system
A method is used for reconfiguring an electronic device, having at least three antenna elements, between different antenna modes. The method includes configuring, by a controller, the electronic device into a first antenna mode, wherein at least two of the antenna elements are coupled together to operate as a single...

07/10/14 - 20140192846 - Rate adaptation for data communication
In some embodiments, a method includes receiving, at a receiver of a first device via a channel of a communication medium, multiple data transmissions. Each data transmission of the multiple data transmissions has a guard interval of multiple guard intervals, wherein the multiple guard intervals have different lengths. The method...

07/10/14 - 20140192847 - Rate adaptation for data communication
In some embodiments, a method includes receiving, at a first device via a channel of a communication medium, multiple data transmissions, wherein a code rate of multiple code rates is associated with each data transmission of the multiple data transmissions. The method includes determining, based on signal characteristics of the...

07/10/14 - 20140192848 - Sending information at a band edge within an orthogonal frequency-division multiplexing (ofdm) symbol
Technology is discussed for increasing the spectral efficiency of an Orthogonal Frequency-Division Multiplexing (OFDM) symbol. Spectral efficiency can be increased by adding information to a band edge of the OFDM symbol in connection with measures taken to reduce OOB spectral leakage from the OFDM symbol. Spectral leakage reduction measures can...

07/10/14 - 20140192849 - System, a device and a method for adjusting output power in a distributed amplifier system
A system comprises a first device and a second device. The first device comprises a receiver, a spectrum analyzer, a controller, an amplifier, a filter and a transmitter. The first device receives from at least one antenna a plurality of signals from different sources. The spectrum analyzer is coupled to...

07/10/14 - 20140192850 - Method and apparatus for eliminating the effects of frequency offsets in a digital communication system
The present invention aims at eliminating the effects of frequency offsets between two transceivers by adjusting frequencies used during transmission. In this invention, methods for correcting the carrier frequency and the sampling frequency during transmission are provided, including both digital and analog implementations of such methods. The receiver determines the...

07/03/14 - 20140185656 - Techniques to accommodate different classes of devices in a wireless network
An apparatus, a method and a machine-readable storage medium to accommodate both high function and low cost wireless devices in a wireless network. An exemplary apparatus includes a receiver to wirelessly receive a first packet comprising first and second shifting pilot signals amidst first data symbols transmitted via multiple subcarriers...

06/26/14 - 20140177683 - Method and apparatus for antenna array channel feedback
A method and apparatus provide antenna array channel feedback. The method can include receiving, at a wireless terminal, a set of channel state information reference signals. The method can include determining, by the wireless terminal, based on the received set of channel state information reference signals, a precoding matrix that...

06/26/14 - 20140177684 - Rapid acknowledgement of radio transmissions for energy minimization
The disclosure relates to a transmission scheme for nodes in a network. More specifically, the disclosure relates to an acknowledgment scheme that minimizes energy requirements for an acknowledgment of a transmission between nodes. The disclosure describes that an energy constrained node may transmit to other nodes in a network and...

06/26/14 - 20140177685 - Broadband re-configurable rf receiver
An RF receiver system operating on a broader frequency range and wide input dynamic power range is described. Received RF signal is downconverted to baseband signal using multiple quadrature demodulators. A microcontroller system controls the RF receiver by selecting frequency range to be produced by the frequency synthesizer, selecting appropriate...

06/26/14 - 20140177686 - Method and apparatus for adjusting the timing of radio antenna tuning
A system that incorporates teachings of the present disclosure may include, for example, determining, by a controller of a mobile communication device, a phase shift criteria and an amplitude shift criteria associated with a modulation being implemented by the mobile communication device. The controller can determine a group of tuning...

06/26/14 - 20140177687 - Modulation method and apparatus with consideration of adaptive hybrid automatic repeat request in wireless communication system
A modulation method and an apparatus with consideration of adaptive Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system are provided. The method of a transmission end supporting a hybrid modulation technique in which different types of modulation schemes are mixed, information of a channel state with a reception...

06/19/14 - 20140169415 - Precoder weight selection for mimo communications when multiplicative noise limited
The method and apparatus disclosed herein improve throughput conditions limited by multiplicative noise by determining precoder weights for each data stream communicated between a MIMO transmitter node and a MIMO receiver node. The precoder weights are determined based on information derived from non-precoded reference symbols to decrease the energy allocated...

06/19/14 - 20140169416 - System and method for data serialization and inter symbol interference reduction
A system and method is disclosed for reducing inter symbol interference in a high speed data transfer system. One or more decision logic circuits and one or more pull circuits are used to enable the signal level of a bit in a serial bit stream to achieve its nominal value....

06/19/14 - 20140169417 - Automatic gain control unit for a low power receiver or transceiver
The automatic gain control unit for a radiofrequency receiver includes a first current source for charging a storage capacitor by a first current, four comparators for comparing on the lower side an in-phase positive intermediate signal, an in-phase negative intermediate signal, a quarter-phase positive intermediate signal, a quarter-phase intermediate signal...

06/19/14 - 20140169418 - Receiver and transmitter apparatus for carrier aggregation
An RF receiver/transmitter apparatus for carrier aggregation is disclosed, to provide a routing circuitry formed by a plurality of mixer modules for achieving both the function of carrier aggregation and the mixing frequency process of signals. This architecture allows sharing an RF front-end, improving degree of integration, and reducing hardware...

06/19/14 - 20140169419 - Transceiver and communication apparatus transmitting and receiving data encoded by transmission code
A transceiver that transmits and receives data used in a communication system, in which the data is encoded by a transmission line code and a signal level of the transmission code changes at a predetermined transition timing in a bit-duration. The transceiver includes: a clock generator that generates an internal...

06/19/14 - 20140169420 - Wireless communication apparatus
Processing data presented in the form of a vector representation involves representing direction of the vector with incremental accuracy by using a set of vector codebooks of decreasing dimensions per accuracy increment....

06/19/14 - 20140169421 - Wireless communication apparatus
Processing data presented in the form of a vector representation involves representing direction of the vector with incremental accuracy by using a set of vector codebooks of decreasing dimensions per accuracy increment....

06/19/14 - 20140169422 - High frequency front end module
A high frequency front end module includes a variable circulator, a transmission side filter, and a reception side filter. Capacitors that are to be selectively connected by a switch are provided between an antenna side port and a transmission side port of a circulator of the variable circulator. Capacitors that...

06/19/14 - 20140169423 - Sensor that transmits signals responsive to a request signal and receives information
A sensor comprises a transmitter to transmit signals over a communication path, the sensor further capable to receive signals from the communication path, wherein the sensor is configured to communicate sensor data having a nibble data signal format at the transmitter in response to a trigger signal received at the...

06/12/14 - 20140161159 - Method and apparatus for the cancellation of intermodulation and harmonic distortion in a baseband receiver
A method (600) and apparatus (200) cancel odd-order distortion signals. Desensitization can be determined (610) in a received signal caused by odd-order harmonic distortion occurring from at least one transmit signal. A baseband replica harmonic distortion signal can be generated (620) using the transmit signal. The baseband replica harmonic distortion...

06/12/14 - 20140161160 - Integrated transmit/receive switch
An apparatus comprises a transmit network to transmit an input from a first amplifier to an antenna, a receive network to provide an input from an antenna to a second amplifier, a first switch to selectively decouple the transmit network from the antenna, and a second switch to selectively decouple...

06/05/14 - 20140153616 - Sliding if transceiver architecture
Techniques for providing a transceiver with a sliding intermediate frequency (IF). In an aspect, a PLL generates a single local oscillator (LO) signal used for both up-conversion by a transmit (TX) signal path and down-conversion by a receive (RX) signal path, wherein the LO frequency is chosen as the TX...

06/05/14 - 20140153617 - Communications device and related method that detects radio frequency (rf) interferer on a communications channel
A communications device includes a demodulator configured to demodulate a received communications signal into complex time domain samples. A processor is coupled to the demodulator and configured to determine the variance over time domain magnitude samples, perform a complex Fast Fourier Transform (cFFT) on the complex time domain samples as...

06/05/14 - 20140153618 - Fast lo leakage calibration of direct up-conversion transmitters using three measurements
A direct conversion transmitter has a mixer stage to up-convert an input signal to the frequency of a local oscillator (LO). A DC offset circuit is coupled to an input signal port to apply a set of DC offset signal values. A processor determines a set of optimal DC offset...

06/05/14 - 20140153619 - Repartitioned transceiver using silicon-on-insulator
A transceiver circuit including a digital-to-analog converter, a filter coupled to the digital-to-analog converter, a passive mixer coupled to the filter, via a buffer and a multi-stage power amplifier coupled to the passive mixer via a passive amplifier. A transmitter and method for amplifying a RF signal for transmission are...

06/05/14 - 20140153620 - Use of multi-level modulation signaling for short reach data communications
A short reach communication system includes a plurality of communication SERDES that communicate data over a short reach channel medium such as a backplane connection (e.g., PCB trace) between, for example, chips located on a common PCB. A multi-level modulated data signal is generated to transmit/receive data over the short...

05/29/14 - 20140146860 - Transceiver with short-circuit detection and protection
A USB transceiver has transmitter circuitry, receiver circuitry, short-circuit detection circuitry, and short-circuit protection circuitry. The transmitter circuitry transmits a differential pair of outgoing data signals to a cable connected to the transceiver, and the receiver circuitry receives the differential pair of outgoing data signals via bi-directional input-output pins. The...

05/29/14 - 20140146861 - Serial digital interface between an rf transceiver and a baseband chip
One embodiment of the present invention provides a device for interfacing between a baseband controller and an RF integrated circuit (IC) chip having a modulator and a demodulator. The device includes an analog-to-digital converter (ADC) coupled to the demodulator located on the RF IC chip. The ADC is configured to...

05/22/14 - 20140140379 - Apparatus, system and method of in-phase/quadrature (i/q) imbalance compensation
Some demonstrative embodiments include apparatuses, systems and/or methods of In-phase/Quadrature (I/Q) imbalance compensation. For example, an apparatus may include an I/Q imbalance calibrator to determine, based on first and second phasors, a plurality of calibration parameters for calibrating I/Q imbalance of both a Radio Frequency (RF) Receive (Rx) path of...

05/22/14 - 20140140380 - Initialization sequence for bi-directional communications in a carrier-based system
A method is provided. An initial bit sequence is received by a receiver. A local oscillator is locked initially to a local reference and subsequently to the received signal using the initial bit sequence, and automatic gain control (AGC) is performed once the local oscillator is locked to the local...

05/22/14 - 20140140381 - Multi-radio coexistence signaling
A method and apparatus relate to coexistence of multiple RF subsystems on a communication device. An apparatus may include a plurality of radio frequency (RF) subsystems configured to receive or transmit communication signals; and an interface for communication between a first RF subsystem of the plurality of RF subsystems and...

05/15/14 - 20140133524 - Hybrid resistive digital-to-analog devices
A differential resistor-based digital-to-analog converter (RDAC) can include a positive digital-to-analog converter (PDAC) stage and a negative digital-to-analog converter (NDAC) stage. A first network of resistors of the PDAC stage can be electrically coupled to a second network of resistors of the NDAC stage utilizing an intermediary network of resistors....

05/15/14 - 20140133525 - Multi-mode active circuit control and activation system
An active circuit control system that utilizes multiple PWM signals to activate and power an array of active components, requiring minimal wiring between the multi-mode signal conditioner and active components. Signal conditioning and filtering is implemented to allow transmission of power and control signals for multiple components over a single...

05/15/14 - 20140133526 - Circuit, transceiver and mobile communication device
A circuit for providing a bias signal for a power amplifier includes a first input, a second input and an output. The first input is configured to receive an input signal to be amplified by the power amplifier. The second input is configured to receive the amplified input signal. The...

05/15/14 - 20140133527 - Digital pre-distortion in a communication network
A method of performing digital pre-distortion in a communication network is described. The method comprises implementing a transceiver in the communication network, the transceiver enabling the transfer of communication signals in the communication network by way of a wireless communication channel; sampling signals, at the transceiver, associated with a transmit...

05/15/14 - 20140133528 - Systems and methods to provide compensated feedback phase information
A communication system includes a polar conversion component, a polar modulator, an RF front-end component, a feedback receiver, a delay compensation component, and an adder. The polar conversion component is configured to provide an amplitude signal and a phase signal. The polar modulator is configured to receive amplitude signal and...

05/15/14 - 20140133529 - Apparatus and methods for adaptive receiver delay equalization
Disclosed are apparatus and methods for adaptive receiver delay equalization. One embodiment relates to a method for adaptive receiver delay equalization. Filtered positive and negative polarity signals are generated by a first variable-delay filter and a second variable-delay filter, respectively. A delay difference is determined between the filtered positive and...

05/15/14 - 20140133530 - Establishing communication
In particular embodiments, a broadband receiver of a wireless communications device may poll a broadband communications channel for configuration data. Once the configuration data has been received, the channel may be established, and connection information may be transmitted to a base station. The connection information may be an identifier for...

05/15/14 - 20140133531 - Dynamic digital predistortion for a microwave radio system
A method for performing digital predistortion to a microwave radio transceiver in response to an increase/decrease of transmit power level is disclosed. If the new transmit power level is higher than the current transmit power level, a set of digital predistortion (DPD) coefficients is applied to the transceiver before the...

05/08/14 - 20140126613 - Transceiver including a high latency communication channel and a low latency communication channel
Methods, systems, and apparatuses are described for reducing the latency in a transceiver. A transceiver includes a high latency communication channel and a low latency communication channel that is configured to be a bypass channel for the high latency communication channel. The low latency communication channel may be utilized when...

05/08/14 - 20140126614 - System, method, and apparatus for digital pre-emphasis in low power serdes systems
A communication system is described that includes a transmitter to transmit data using one or more drivers. The drivers may drive the data in a manner that accords with pre-emphasis being selectively enabled or disabled for each driver. The pre-emphasis, when enabled, is applied by corresponding driver. The drivers may...

05/01/14 - 20140119413 - Flexible scrambler/descrambler architecture for a transceiver
An apparatus is provided. A polynomial register having a plurality of bits is provided, where the polynomial register is configured to store a user-defined polynomial. A transceiver is coupled to a first bus, a second bus, and the polynomial register. The transceiver includes a self-synchronous scrambler that is configured to...

05/01/14 - 20140119414 - Railway code generation and signaling system and method
A first unit configured to generate and transmit a code of positive and negative DC pulses through a first rail of a railway. A second unit spaced from the first unit and configured to sense the code, which includes a leading code word, having a positive or negative timing pulse...

05/01/14 - 20140119415 - Wireless device
A wireless device includes a wireless unit, a baseband processing unit, an event-initiation detecting unit, and an amplitude-level control unit. The wireless unit performs signal processing on a radio signal. The baseband processing unit is connected to the wireless unit through a digital communication channel and transmits/receives a digital signal...

04/24/14 - 20140112375 - Indoor radio ranging based on a subset of subcarriers employed by orthogonal frequency division multiplexing (ofdm)
Systems, apparatus and methods for determining a set of ranges from selected subcarriers of an OFDM signal sent between a receiver (e.g., first transceiver or a local receiver of a local unit at a first location) and a transmitter (e.g., second transceiver or remote transmitter of a remote unit at...

04/24/14 - 20140112376 - Reduced pair ethernet transmission system
A system for reduced pair Ethernet transmission. The system includes an interleaver that is operable to receive sets of four code symbols from a physical channel sub-layer (PCS) encoder, wherein each code symbol of each set of four code symbols is associated with one of four channels, and interleave the...

04/24/14 - 20140112377 - Unified, programmable receiver with support for multiple modes
Techniques are described herein that receive communications transmitted according to different operation modes at a multi-mode, programmable receiver system. The multi-mode, programmable receiver system may receive communication signals from transmit antennas in “cells” (e.g., base station transceivers and/or the like) according to one or more operation modes, using receive antennas....

04/24/14 - 20140112378 - Robust scalable and adaptive frequency estimation and frequency tracking for wireless systems
Methods and apparatuses to determine a frequency adjustment in a mobile wireless device are disclosed. A method includes determining a coarse frequency error estimate and multiple fine frequency error estimates; selecting at least one candidate fine frequency error estimate having a frequency value closest to a corresponding frequency value for...