Abstract: A method of determining a posterior error probability distribution for a parameter measured by a Global Navigation Satellite System (GNSS) receiver. The method comprises receiving a value for each of one or more GNSS measurement quality indicators associated with the GNSS measurement of the parameter. The or each received measurement quality indicator value is provided as an input into a multivariate probability distribution model to determine the posterior error probability distribution for the GNSS measurement, wherein the variates of the multivariate probability distribution model comprise error for said parameter, and the or each measurement quality indicator.

Abstract: A method of determining a posterior error probability distribution for a parameter measured by a Global Navigation Satellite System (GNSS) receiver. The method comprises receiving a value for each of one or more GNSS measurement quality indicators associated with the GNSS measurement of the parameter. The or each received measurement quality indicator value is provided as an input into a multivariate probability distribution model to determine the posterior error probability distribution for the GNSS measurement, wherein the variates of the multivariate probability distribution model comprise error for said parameter, and the or each measurement quality indicator.

Abstract: A method of determining a posterior error probability distribution for a parameter measured by a Global Navigation Satellite System (GNSS) receiver. The method comprises receiving a value for each of one or more GNSS measurement quality indicators associated with the GNSS measurement of the parameter. The or each received measurement quality indicator value is provided as an input into a multivariate probability distribution model to determine the posterior error probability distribution for the GNSS measurement, wherein the variates of the multivariate probability distribution model comprise error for said parameter, and the or each measurement quality indicator.

Abstract: A device is disclosed, comprising: at least one surface of a device casing, at least one acoustic discontinuity on the at least one surface configured to reflect an ultrasonic acoustic signal, at least one piezoelectric transducer coupled to the at least one surface, configured to induce the ultrasonic acoustic signal in the at least one surface and receive a reflected ultrasonic acoustic signal, wherein an occurrence and location of a touch incident on the at least one surface is determined by analyzing the reflected ultrasonic acoustic signal received by the piezoelectric transducer.

Abstract: A device is disclosed, comprising: at least one surface of a device casing, at least one acoustic discontinuity on the at least one surface configured to reflect an ultrasonic acoustic signal, at least one piezoelectric transducer coupled to the at least one surface, configured to induce the ultrasonic acoustic signal in the at least one surface and receive a reflected ultrasonic acoustic signal, wherein an occurrence and location of a touch incident on the at least one surface is determined by analyzing the reflected ultrasonic acoustic signal received by the piezoelectric transducer.

Abstract: An apparatus including a plurality of capacitive sensing cells distributed over a sensing area, wherein each capacitive sensing cell includes a capacitive sensor electrode and at least one switch; a plurality of output conductive traces, wherein each output conductive trace is configured to provide an output from multiple capacitive sensing cells; a plurality of control conductive traces, wherein each control conductive trace is configured to provide a control input to multiple capacitive sensing cells, wherein the switch of a capacitive sensing cell is configured to be controlled by one of the plurality of control conductive traces to enable a conductive path between the capacitive sensor electrode of the capacitive sensing cell and one of the plurality of output conductive traces; and a shield electrode overlying at least portions of the output conductive traces or the control conductive traces while exposing at least portions of the capacitive sensor electrodes.

Abstract: An apparatus including a plurality of capacitive sensing cells distributed over a sensing area, wherein each capacitive sensing cell includes a capacitive sensor electrode and at least one switch; a plurality of output conductive traces, wherein each output conductive trace is configured to provide an output from multiple capacitive sensing cells; a plurality of control conductive traces, wherein each control conductive trace is configured to provide a control input to multiple capacitive sensing cells, wherein the switch of a capacitive sensing cell is configured to be controlled by one of the plurality of control conductive traces to enable a conductive path between the capacitive sensor electrode of the capacitive sensing cell and one of the plurality of output conductive traces; and a shield electrode overlying at least portions of the output conductive traces or the control conductive traces while exposing at least portions of the capacitive sensor electrodes.

Abstract: Code synchronization is acquired as a part of receiving and decoding a spread spectrum transmission. There are received a number of signal samples that constitute a signal sample sequence. It represents a length of a received signal spread with one full length of a pseudorandom sequence used as a spreading code. The signal sample sequence is augmented at least at one end with at least one additional symbol, which produces a padded signal sample sequence. The padded signal sample sequence is in turn correlated with a locally produced sample sequence that comprises code samples representing a known form of said spreading code. The result of said correlating is used as a basis for acquired code synchronization.

Abstract: A receiver comprising a processor having an input to receive a sequence of transmission frames conforming to a transmission protocol to represent payload data, a memory arranged to store and to provide to the processor a transmission protocol, a code provider arranged to provide to the processor one or more predetermined codes for association in a predetermined distributed manner within a group of transmission frames of a transmission sequence to represent one or more particular positions in the group of transmission frames, and wherein the processor is arranged to compile at least a portion of one or more distributed codes from a group of transmission frames of a transmission sequence received at the input using the predetermined distributed manner of the one or more predetermined codes received from the code provider, and to compare one or more compiled portions of one or more codes with the one or more predetermined codes received from the code provider to determine one or more particular positions in t

Abstract: The invention relates to an apparatus supporting an acquisition of a received code modulated signal by determining the correlation between the received code modulated signal and an available replica code sequence at different code phases. It is proposed that the apparatus comprises a first acquisition engine for selecting code phases which are good candidates for being the code phase at which a received code modulated signal and an available replica code sequence have the highest correlation. The apparatus further comprises a second acquisition engine for performing a refined comparison between a received code modulated signal and an available replica code sequence for each code phase selected by the first acquisition engine. The invention relates equally to a corresponding method and to a system comprising such an apparatus and a network.

Abstract: A method for determining a delay of a spread data symbol stream comprises the steps of at least partially correlating a signal, which comprises at least first and second spread data symbol streams (300, 301) that are obtained by spreading at least a first and second data symbol stream with a respective first (302) and second code, with said first code (302) to obtain at least two portions (303-1, 303-2) of a Cross-Correlation Function CCF (303), and combining said at least two portions (303-1, 303-2) of said CCF (303) to obtain a combined CCF portion from which a first delay of said first spread data symbol stream is determined, wherein said first code (302) and said second code are composed of chips and wherein the number of chips of said first code (302) is different from the number of chips of said second code. The invention further relates to a computer program, a computer program product, a device and a system.

Abstract: Code synchronization is acquired as a part of receiving and decoding a spread spectrum transmission. There are received a number of signal samples that constitute a signal sample sequence. It represents a length of a received signal spread with one full length of a pseudorandom sequence used as a spreading code. The signal sample sequence is augmented at least at one end with at least one additional symbol, which produces a padded signal sample sequence. The padded signal sample sequence is in turn correlated with a locally produced sample sequence that comprises code samples representing a known form of said spreading code. The result of said correlating is used as a basis for acquired code synchronization.

Abstract: A receiver comprising a processor having an input to receive a sequence of transmission frames conforming to a transmission protocol to represent payload data, a memory arranged to store and to provide to the processor a transmission protocol, a code provider arranged to provide to the processor one or more predetermined codes for association in a predetermined distributed manner within a group of transmission frames of a transmission sequence to represent one or more particular positions in the group of transmission frames, and wherein the processor is arranged to compile at least a portion of one or more distributed codes from a group of transmission frames of a transmission sequence received at the input using the predetermined distributed manner of the one or more predetermined codes received from the code provider, and to compare one or more compiled portions of one or more codes with the one or more predetermined codes received from the code provider to determine one or more particular positions in the

Abstract: The invention relates to a method for acquiring a receiver (1) into a code modulated spread spectrum signal received by the receiver (1). In the method at least one replica code (r) is used which corresponds to a code used with the modulation having a pre-determined number of chips, and an examination phase is performed, in which a frequency shift of the signal within a selected frequency area is examined, and a code phase of the code used with the modulation is examined. In the method the frequency shift examination is divided into a first estimation phase and a second estimation phase, wherein in the first estimation phase the selected frequency area is divided into a first set of frequencies, and in the second estimation phase a second set of frequencies is examined nearby each frequency of the first set of frequencies.

Abstract: A method, corresponding apparatus, and corresponding system for acquiring a received spread spectrum signal, the received signal having a carrier component at a carrier frequency, a code component having a code period, and a data component, the acquiring including matching the phase of a replica of the code component to the phase of the received code component and also determining any shift in the carrier frequency away from a transmitted carrier frequency, the method including the steps of: performing a first acquisition of the received signal so as to provide an approximately estimated carrier frequency and a phase of the replica and also so as to provide a code-wiped and an approximately carrier-wiped signal; and performing a second acquisition of the approximately carrier-wiped signal, the second acquisition including a substep of data wipe-off involving a squaring or similar operation on a signal derived from the approximately carrier-wiped signal; thereby providing a correction to the approximately esti

Abstract: A method for determining a delay of a spread data symbol stream comprises the steps of at least partially correlating a signal, which comprises at least first and second spread data symbol streams (300, 301) that are obtained by spreading at least a first and second data symbol stream with a respective first (302) and second code, with said first code (302) to obtain at least two portions (303-1, 303-2) of a Cross-Correlation Function CCF (303), and combining said at least two portions (303-1, 303-2) of said CCF (303) to obtain a combined CCF portion from which a first delay of said first spread data symbol stream is determined, wherein said first code (302) and said second code are composed of chips and wherein the number of chips of said first code (302) is different from the number of chips of said second code. The invention further relates to a computer program, a computer program product, a device and a system.

Abstract: The invention relates to an apparatus supporting an acquisition of a received code modulated signal by determining the correlation between the received code modulated signal and an available replica code sequence at different code phases. It is proposed that the apparatus comprises a first acquisition engine for selecting code phases which are good candidates for being the code phase at which a received code modulated signal and an available replica code sequence have the highest correlation. The apparatus further comprises a second acquisition engine for performing a refined comparison between a received code modulated signal and an available replica code sequence for each code phase selected by the first acquisition engine. The invention relates equally to a corresponding method and to a system comprising such an apparatus and a network.

Abstract: The invention relates to a method for positioning a receiver based on code modulated signals transmitted by a plurality of transmitting units, which code modulated signals are formed by an individual code for each transmitting unit. In order to enable an improved positioning it is proposed that the method comprises in a first step receiving signals at said receiver. In a second step a correlation of the received signals is performed with predetermined replica codes corresponding to the individual codes employed by the transmitting units for determining potentially used channels based on resulting correlation peaks. A third step consists in determining a value indicative of the signal level of each channel for which a maximum correlation peak is obtained in a correlation with one of said predetermined codes.

Abstract: The invention relates to a method for positioning a receiver based on code modulated signals transmitted by a plurality of transmitting units, which code modulated signals are formed by an individual code for each transmitting unit. In order to enable an improved positioning it is proposed that the method comprises in a first step receiving signals at said receiver. In a second step a correlation of the received signals is performed with predetermined replica codes corresponding to the individual codes employed by the transmitting units for determining potentially used channels based on resulting correlation peaks. A third step consists in determining a value indicative of the signal level of each channel for which a maximum correlation peak is obtained in a correlation with one of said predetermined codes.

Abstract: A method, corresponding apparatus, and corresponding system for acquiring a received spread spectrum signal, the received signal having a carrier component at a carrier frequency, a code component having a code period, and a data component, the acquiring including matching the phase of a replica of the code component to the phase of the received code component and also determining any shift in the carrier frequency away from a transmitted carrier frequency, the method including the steps of: performing a first acquisition of the received signal so as to provide an approximately estimated carrier frequency and a phase of the replica and also so as to provide a code-wiped and an approximately carrier-wiped signal; and performing a second acquisition of the approximately carrier-wiped signal, the second acquisition including a substep of data wipe-off involving a squaring or similar operation on a signal derived from the approximately carrier-wiped signal; thereby providing a correction to the approximately esti