Abstract: An image sequence comprises at least a first image and a second image. A motion vector (MV(1)) is associated to these first and second images and is defined in a coordinate system having at least a first direction and a second direction, the second direction being different from said first direction. This motion vector has a first previous component value (MVD1(0)) in the first direction. A method processes both images in order to determine an estimate of the motion vector based on the first previous component value. To this purpose, the method defines a first image portion in the first image and a second image portion in the second image based on the first previous component value of the motion vector. Then, the method determines a first characteristics vector for the first image in the first image portion and a second characteristics vector for the second image in the second image portion.

Abstract: The embodiment of the invention discloses a method, device and computer program for denoising in channel estimation. The method comprises steps of: calculating a noise power value and a power value of each path in each user window based on a channel estimation result, the user window is referred to channel impulse response window corresponding to this user; calculating a denoising threshold factor based on the noise power value and the power value of each path in each user window; calculating a denoising threshold value based on the noise power value and the denoising threshold factor; and performing a denoising processing on the channel estimation result by using the denoising threshold value.

Abstract: Process of a finger assignment in a rake receiver for a wireless communication device comprising the following steps: —detection (21) of a pilot (CPICH) and the comparison of its energy according to a first threshold value; —detection (22), on the basis of said first threshold value, of a first significant path; —assignment (23) of said first significant path to a first finger of the rake receiver; —determination (24) of an observation window; —application (25) of a second threshold value, distinct and lower than said first value, for the detection of secondary paths; —rake fingers assignment to secondary paths detected.

Abstract: A transceiver for orthogonal frequency division multiplex communication has a transmitter module (1) and a receiver module (2). The transmitter (1) has an l-path (3) and a Q-path (4) to receive signals on a number of subcarriers provided by a signal generator (9). The receiver module (2) has a receiver l-path (7) and a receiver Q-path (8) to deliver signals to a processor (15). IQ imbalance is calculated for each of the transmitter and receiver by the signal generator sending a sample signal (Xl(k), XQ(k)) over a one of the transmitter paths. The signal is then applied to one or each of the inputs to the receiver paths (7,8) to generate receiver output signals Yl(k), YQ(k), RQ(k). The processor (15) is responsive to the output signals to calculate the transmitter and receiver IQ imbalance for that subcarrier. A calibrator (19) and compensator (20) are responsive to the calculated IQ imbalance to correct or compensate each subcarrier of the transceiver band.

Abstract: An electronic USB or similar device 101 with a CMOS audio output stage 105 for driving, in a first mode, e.g., a headset via a port commonly used also in a second mode by a digital data transmission stage 103 for digital data and supply, the audio output stage P-channel transistor MP being switchably back-gate biased by a bias circuit 107 according to the operating mode to achieve high-voltage tolerance.

Abstract: An apparatus and process is provided for handling downlink transmissions to a user equipment (UE) from a service provider wherein the UE is adapted to be associated with two subscriber identity modules (SIMs). The two SIMs are associated with a first communication network and a second communication network such that the UE can request a switch of downlink data via the first communication network to the second communication network.

Abstract: A method of setting a Radiofrequency, RF, signal level in a RF receiver comprising: estimating an error of the signal level due to signal level reaching a condition of jamming or clipping by correlating the signal level with a point of a characterization curve of jamming condition or with a point of a characterization curve of clipping condition (300), respectively; correcting the RF signal level based on the error; and, wherein: each of the characterization curves comprises a plurality of points comprising first points determined in a previously performed characterization at a point of measurement and groups of second points stepped between pairs of adjacent first points, said plurality of first points including at least three points defining at least two sections of the characterization curve.

Abstract: An integrated circuit includes a clock generation stage that generates a clock signal having a clock frequency dependent on a reference signal. A delay stage generates a delayed clock signal by delaying the clock signal. A control stage generates a control signal indicative of a delay of the delayed clock signal relative to the clock signal. A frequency divider generates a divided signal by dividing a dividend signal having a dividend frequency dependent on the reference signal. A power supply regulator supplies power to the frequency divider at a first power level, which is dependent on the control signal.

Abstract: A matrix for use with a radio transceiver having at least two signal sources is provided. The matrix comprises for each selected set of two or more signal sources, a list of combinations of harmonics of the signal sources, the combinations of harmonics each having a predicted amplitude greater than a predetermined threshold, and a frequency within a defined range related to a frequency range of one of the signal sources. Further, methods for generating such matrix and methods for avoiding spurs are provided.

Abstract: A switching circuit that switches voltage at an output node includes a first switch element configured to enable supplying a first voltage from a first supply node to the output node, a second switch element configured to enable supplying a second voltage from a second supply node to the output node, and a controller. The controller switches the first and the second switch element between a first state and a second state depending on an input voltage. In the first state, the first switch element is in a conducting state and the second switch element is in a non-conducting state, and, in the second state the first switch element is in a non-conducting state and the second switch element is in a conducting state, the switching being performed through an intermediate state in which both the first and the second switch element are in the non-conducting state.

Abstract: A Power amplifier circuit based on a cascode structure and to be powered by a power source voltage, e.g. a battery, said circuit comprising -a first transistor having a grid, source and drain terminal; said first transistor being connected in a common source mode; -a second grid source transistor having grid, source and drain terminal, said second transistor being connected in common grid mode; -a biasing circuit for biasing said first transistor and said second transistor.

Abstract: It is provided a method implemented by an electronic device comprising a near field communication (NFC) system. The system comprises an NFC contactless front end, a plurality of secure element interfaces to which a plurality of secure elements are connected, and a processing unit adapted to control the NFC contactless front end and the plurality of secure elements through the secure element interfaces. The method comprises sending (S10) an initialization command to all the secure elements through the secure element interfaces, upon exposure of the NFC contactless front end to an NFC reader. The method improves the field of near field communication.

Abstract: It is proposed a method for receiving and demodulating an orthogonal frequency division multiplexing signal received through a transmission channel (TC) by a receiver (RCV), comprising demultiplexing said signal to generate time symbols (yl(n)) and performing a time-to-frequency conversion of these time symbols to generate frequency bins (Yl(k)) corresponding to received symbols, the received symbols comprising preamble symbols. The method comprises: Determining an estimated carrier frequency offset on the basis of frequency bins corresponding to used subcarriers of the preamble symbols; Applying said estimated carrier frequency offset to the time symbols so as to correct the carrier frequency of these received symbols.

Abstract: The present invention provides a method for a communication terminal to reside in a plurality of networks, and a communication terminal thereof. The method comprises the steps of: acquiring a first signal intensity corresponding to a first communication network and acquiring a second signal intensity corresponding to a second communication network; when the first signal intensity is greater than a first threshold, registering a first service in the first communication network; when the second signal intensity is greater than a second threshold, registering a second service in the second communication network; when the second signal intensity is less than or equal to the second threshold, searching for the second communication network and registering the second service in the first communication network; and when the first signal intensity is less than or equal to the first threshold, searching for the first communication network and registering the first service in the second communication network.

Abstract: A method of conditioning a first signal transmitted between a first and a second near field communication, NFC, device, the method comprising: determining a transfer function representative of a distortion arising from transfer of a signal from the first NFC device to the second NFC device; determining a pre-distortion function from the transfer function; and applying the pre-distortion function to the first signal, wherein the pre-distortion function at least partially compensates for the determined transfer function.

Abstract: An arrangement (400) for a user equipment, UE, is disclosed. The arrangement (400) comprises an acquiring unit (401) configured to acquire neighboring cell information relating to a plurality of neighboring cells. An assignment unit (403) is provided to assign a priority indicator to each neighboring cell based on the neighboring cell information. Also, a measurement unit (404) is provided to perform measurements on the basis of the assigned priority indicators. The arrangement (400) is arranged such that measurements can be performed more frequently for a neighboring cell having a first priority indicator compared with another neighboring cell having a second priority indicator, which second priority indicator is comparatively lower than the first priority indicator. The disclosure also presents corresponding methods, computer program products and devices.

Abstract: A low-noise amplifier (LNA) circuit utilizes the capacitive cross coupling technique with two pairs of NMOS transistors in conjunction with two cross coupled PMOS transistors to obtain a reduced noise figure. By using the cross coupling technique on the PMOS input transistor, the LNA circuit is able to reduce the noise figure below 2 dB without the use of an inductor. This LNA circuit may be used to amplify a signal in the WLAN band or the Bluetooth band, either independently or simultaneously.

Abstract: Method of data processing for selectively activating, at a mobile station, a mode of communication related to VAMOS-2 technology. The method includes the steps of: receiving a first signal of a first subchannel, the first signal containing a first training sequence, and receiving a second signal of a second subchannel, the second signal containing a second training sequence, the second signal being orthogonally multiplexed with respect to the first signal, and using the first training sequence and the second training sequence to: determine a value of a parameter defining a ratio between the first subchannel power and the second subchannel power, and determine a signal to noise ratio estimation, and determine, using the parameter value and the signal to noise estimation, whether the mode of communication has to be activated.

Abstract: A receiver is configured to determine an estimation of a Sampling Frequency Offset an OFDM signal received from an emitter over a transmission channel. The received OFDM signal is constituted of symbols. The receiver receives symbols from the emitter through a first path of said transmission channel, and receives the symbols from the emitter through a second path of the transmission channel. On the second path, the symbols are characterized by a different ratio between a first duration of a total OFDM symbol and a second duration of useful data portion of the OFDM symbol, than on the first path. The receiver determines the estimation according to received symbols through the first and second paths.

Abstract: A low-noise reference voltages distribution circuit has a multi-output voltage-to-current converter configured to receive an input reference voltage and to provide a plurality of output reference currents to be converted into a plurality of local reference voltages by corresponding receiving circuits. The converter includes an input section, an output section and a low-pass filter. The input section generates a reference current based on the input reference voltage, and has a current mirror input transistor having a voltage controlled input terminal. The output section includes a plurality of current mirror output transistors outputting reference currents to the plurality of reference currents, respectively, and having a voltage controlled input terminal connected to a common input node. The low-pass filter has an input node connected to the voltage controlled input terminal of the current mirror input transistor and an output node connected to the common input node.