Abstract: A global navigation satellite system receiver with filter bypass mode for improved sensitivity is disclosed. In an aspect, an apparatus is provided that includes a non-bypass signal path coupled to a receiver, the non-bypass signal path comprising a filter. The apparatus also includes a bypass signal path coupled to the receiver, the bypass signal path configure to bypass the filter, and a switch to couple an antenna to the non-bypass signal path during time intervals when signals transmitted by an unrelated local transmitter are transmitted with a signal power that exceeds a selected threshold, and to couple the antenna to the bypass signal path during other time intervals.

Abstract: A method and apparatus for providing information about an encrypted signal transmitted by a satellite in a satellite navigation system are disclosed. A data sequence of the encrypted signal as transmitted is obtained, a signal sample is extracted from the data sequence, the signal sample including a part of the data sequence having a length less than a total length of the data sequence, and the signal sample and information about when the data included in the signal sample was transmitted by the satellite are transmitted, as the encrypted signal information, to a receiver for use in the satellite navigation system. A method and apparatus for authenticating an unencrypted signal based on the encrypted signal information are also disclosed.

Abstract: A method and apparatus can be configured to transmit a number of azimuth antenna elements. The method can also comprise transmitting a number of elevation antenna elements. The method can also comprise receiving an azimuth precoder-matrix-indicator. The method can also comprise receiving an elevation precoder-matrix-indicator. The method can also comprise transmitting based on the received azimuth precoder-matrix-indicator and the received elevation precoder-matrix-indicator.

Abstract: A transmitter/receiver that includes a wireless power receiving mode and a data transmission mode. In the wireless power receiving mode, the transmitter/receiver receives wireless power through and coil and provides power to a load. In data transmission mode, the transmitter/receives drives the coil according to data to transmit data.

Abstract: A method of generating data is provided. The method includes providing, by a peak comparator, a searcher enable signal and peak comparator output data based on result values that are generated by multiplying an input signal having a plurality of levels and a predetermined convolution pattern, providing by a start pattern searcher, a data determiner enable signal by comparing the peak comparator output data and a predetermined start pattern according to the searcher enable signal; and providing, by a data determiner, result data corresponding to the input signal based on the data determiner enable signal, the input signal and a predetermined filter mask pattern.

Abstract: Radio frequency (RF) front end circuitry includes RF filtering circuitry with first multiplexer circuitry and second multiplexer circuitry. The first multiplexer circuitry is used to pass primary RF transmit and receive signals within one or more frequency division duplexing (FDD) operating bands and diversity multiple-input-multiple-output (MIMO) receive signals within one or more time division duplexing (TDD) operating bands between transceiver circuitry and one or more antennas. The second multiplexer circuitry is used to pass primary RF transmit and receive signals within the one or more TDD operating bands and diversity MIMO receive signals within the one or more FDD operating bands between the transceiver circuitry and the one or more antennas.

Abstract: It is presented a method for Global System for Mobile communications, GSM, cell searches. The method is performed in a wireless terminal of a cellular network when the wireless terminal is active in a non-GSM radio access technology and comprising the steps of: scheduling reception of a part of a frame burst of a GSM frequency in said cellular network for said wireless terminal; searching digital samples received on said GSM frequency for a predefined logical channel pattern. A corresponding wireless terminal, computer program and computer program product are also presented.

Abstract: Disclosed herein is a method for generating transmitted signals. The method includes selecting a reference resource element (RE) from an RE group including a plurality of REs, generating a common precoder to be shared among the plurality of REs of the RE group based on channel information of the reference RE, generating primary signals, which are precoding signals of the plurality of REs, by applying the common precoder to transmitted data for the plurality of REs, and generating secondary signals by compensating for the primary signals of the REs except for the reference RE among the plurality of REs using channel information of the REs.

Abstract: A transceiver to communicate in a vehicle via a single twisted-pair Ethernet cable includes a transmitter to transmit signals via the single twisted-pair Ethernet cable and a receiver to receive signals via the single twisted-pair Ethernet cable. The transceiver includes an equalizer, a signal-to-noise ratio estimator, and a controller. The equalizer includes a notch filter and a slicer. The equalizer receives an input signal received by the transceiver via the single twisted-pair Ethernet cable. The notch filter cancels electromagnetic interference from the input signal and to output a filtered signal. The slicer slices the filtered signal. The signal-to-noise ratio estimator estimates a signal-to-noise ratio based on an output of the slicer. The controller controls a rate of adapting the equalizer by controlling a rate of change of tap values of the notch filter based on the signal-to-noise ratio.

Abstract: A clock and data recovery circuit and a phase interpolator therefor are provided. The clock and data recovery circuit includes a phase-locked loop, a control unit and the phase interpolator, a receiving circuit, a serial-to-parallel conversion circuit. The phase interpolator is connected with the control unit of the clock and data recovery circuit, and the phase interpolator includes: an encoding circuit, two multiplexers, a clock mixer, and two differential to single-ended amplifiers. The control unit is configured to further control the encoding circuit to change a delay position for a clock outputted by the phase interpolator in a case that the data sampled in the current clock position is not the optimal sampled data, to lead or lag the clock, thereby forming a stable state in which the clock follows the data dynamically.

Abstract: Aspects of the subject disclosure may include, for example, a system that performs operations including detecting a signal degradation of electromagnetic waves guided by a transmission medium, and adjusting at least one phase of signal components of the electromagnetic waves to produce adjusted electromagnetic waves having a hybrid wave mode and a non-optical frequency range to mitigate the signal degradation. Other embodiments are disclosed.

Abstract: A digital signal processing method and apparatus is described. The digital processing apparatus comprises a coarse carrier recovery module for performing a coarse carrier compensation of a received modulated signal; and a trellis-based equalization module selectable between a first mode for performing a trellis-based equalization to compensate a residual inter-symbol interference of the received modulated signal and a second mode for performing a trellis-based equalization to compensate a residual phase noise of the received modulated signal.

Abstract: A signal receiver with adaptive software information adjustment of a communication system is provided. The signal receiver receives a modulated signal comprising a plurality of packets, and includes: a demodulating circuit, configured to demodulate the modulated signal to generate a plurality of sets of soft information corresponding to each packet; a software information adjusting circuit, coupled to the demodulating circuit, configured to adjust the sets of soft information according to a distribution of the sets of soft information corresponding to each packet; a quantizer, coupled to the soft information adjusting circuit, configured to quantize the adjusted sets of soft information to generate a plurality of sets of data; and a decoder, coupled to the quantizer, configured to decode the data.

Abstract: Various embodiments relate to a device for reducing noise in a received signal, the device including a memory; a processor configured to: receive a signal containing narrow band noise which was transmitted over a channel and received at an analog front end; add two separate delays to the signal to generate a first delayed signal and a second delayed signal; apply an adaptive noise cancellation using the first delayed signal and the second delayed signal to estimate the narrow band noise; and remove the narrow band noise based upon the estimated narrow band noise.

Abstract: A communication device receives a transmitted signal from another communication device. This transmitted signal is generated within the another communication device based on predetermined digital data. The communication device then generates a first reference signal based on a copy of the predetermined digital data and subtracts the first reference signal from the transmitted signal to generate a first residual signal. The communication device then identifies at least one adaptation parameter based on the first residual signal and adapts the first reference signal using the at least one adaptation parameter to generate a second reference signal so that a first characteristic of the transmitted signal and a second characteristic of the second reference signal are approximately equal.

Abstract: A method for generating a physical layer (PHY) data unit includes generating a first signal field to include multiple copies of first signal field content, wherein the first signal field content spans one sub-band of a plurality of sub-bands of the PHY data unit, and wherein the multiple copies collectively span the plurality of sub-bands of the PHY data unit; generating a second signal field to include multiple copies of second signal field content, wherein the second signal field content spans multiple ones of the plurality of sub-bands of the PHY data unit, and wherein the multiple copies of the second signal field collectively span the plurality of sub-bands of the PHY data unit; generating a preamble of the PHY data unit to include at least the first signal field and the second signal field; generating the PHY data unit to include at least the preamble.

Abstract: Provided is a method of blindly estimating WCDMA OVSF of a signal analyzer, which includes: (a) setting SF to 512 and an index thereof to 0; (b) calculating a power average value of a symbol obtained by despreading descrambled data with an OVSF code set by increasing the index from ‘0’ by ‘1’; (c) determining an OVSF code by which the power average value is equal to or greater than a power reference value as a used OVSF code candidate and determining an OVSF code by which the power average value is less than the power reference value as an unused OVSF code; (d) comparing a zero crossing rate of a symbol with a reference value to determine whether the OVSF code candidate is the used OVSF code; and (e) repeating (b) to (d) while reducing the SF half by half until the SF is equal to 4.

Abstract: In various embodiments, a power-line communication apparatus provides data over a power-line communication network by transmitting data symbols to endpoint circuits over a power line. The power-line communication apparatus includes a signal-processing circuit configured to combine a plurality of different data streams, each of the plurality of different data streams respectively formatted according to different communication schemes, to form a signal that represents a combination of the different data streams and corresponding communication schemes. Further, the power-line communication apparatus includes a pulse-modulation circuit configured to convert the signals, as combined, as a pulse-width modulated or a pulse-density modulated signal, the pulse-modulation circuit configured to switch at a frequency higher than frequencies of the different communication schemes.

Abstract: At least one crosstalk probing sequence out of a set of orthogonal crosstalk probing sequences is assigned to the at least one respective disturber line for modulation at the given carrier frequency of at least one respective sequence of crosstalk probing symbols, and error samples are successively measured by a receiver coupled to the victim line at the given carrier frequency while the at least one sequence of crosstalk probing symbols are being transmitted over the at least one respective disturber line are fed back for crosstalk estimation. The received error samples are next correlated with at least one unassigned crosstalk probing sequence out of the set of orthogonal crosstalk probing sequences for detection of a demapping error in the received error samples.

Abstract: The data are communicated from a transmitter to a receiver in a wireless communications network. Data symbols are modulated using a coded modulation to produce modulated symbols and the modulated symbols are precoded using a precoder matrix to produce precoded symbols. The precoder matrix is formed using a rotation matrix including phase angles for at least some elements of the rotation matrix with values determined according to a parametric function of indices of the elements storing the phase angles. Next, the data packets are formed using the precoded symbols and the data packets are transmitted over the wireless network. Multi-stage parametric phase precoding provides full-diversity and full-rate transmissions by using fast-transformable unitary matrices and deterministic diagonal phase rotation, whose phase angles are pre-determined to minimize the union bound for time-selective and frequency-selective fading channels.