Abstract: In accordance with a first aspect of the present disclosure, a communication system is provided, comprising: a plurality of communication nodes which are operatively coupled to each other, wherein each of said communication nodes comprises a first radio frequency (RF) communication unit configured to perform ranging sessions with an external communication device; a controller configured to create a logical subset of said communication nodes based on an indication of a channel quality between the communication nodes and the external communication device, wherein said indication of the channel quality has been obtained using a second RF communication unit comprised in each of said communication nodes; the controller further being configured to cause that only the communication nodes included in said logical subset perform said ranging sessions with the external communication device.

Abstract: There is described a radar system (100) and a corresponding method, the radar system (100) comprising i) a control unit (110), configured for generating a code (C) comprising a sequence of code symbols (211), wherein generating the code (C) comprises randomly selecting a plurality of code symbols (211) from a code symbol pool (310) comprising a plurality of code symbols (211), ii) a transmitter (120), configured for generating a signal (S) from the code (C), and further configured for transmitting the signal (S), iii) a receiver (130), configured for receiving an echo (E) of the signal (S), and iii) a correlator (140), configured for correlating each code symbol of the code (C?) of the received echo (E) of the signal (S) to a corresponding symbol template (R) associated with the correlator (140); wherein the radar system (100) is further configured for synchronizing the symbol template (R) to the code (C) of the signal (S).

Abstract: Compact battery powered wireless devices such as automotive key fobs that enable secure vehicle access can realize improved battery life and user experience by including a wake-up receiver that wakes up near-field communication (NFC) circuitry and other circuitry such other communication circuitry (e.g., ultrawideband or Bluetooth circuitry) that is configured to operate with an antenna system that enables the device to detect a wake-up signal generated by an external NFC device at much longer distances than conventional wake-up receivers, even at low power levels, by modifying the wake-up receiver to operate in a frequency band in which the near-field regime can extend to at least one meter and wireless signals are not strongly attenuated by a user's body or clothing. The frequency band can also be chosen to coincide with communication frequencies used by legacy NFC and radiofrequency ID readers such as 13.56 MHz.

Abstract: In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: an ultra-wideband (UWB) communication unit configured to carry out UWB communication with an external communication device; a plurality of antennas operatively coupled to said UWB communication unit, at least one inertial sensor; an antenna selection unit configured to select, based on an output of the inertial sensor, a specific antenna of said plurality of antennas for carrying out the UWB communication. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication device is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided for carrying out said method.

Abstract: A method is provided for estimating a time-of-flight (TOF) in a wireless communication between first and second devices. The method includes receiving a signal, transmitted from the second device, at first and second antennas of the first device. The second antenna is spaced apart from the first antenna on the first device. A difference in arrival time of the received signal at the first antenna and at the second antenna is computed by the first device. A non-line-of-sight (NLOS) signal path of the received signal in a TOF estimation is compensated for using the difference in arrival time of the received signal between the first antenna and the second antenna. In another embodiment, a communications device having multiple antennas is provided that compensates for the NLOS signal path using the method.

Abstract: In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: a plurality of antennas; a communication unit configured to execute ranging sessions with an external communication counterpart through said antennas; an antenna selection unit configured to select a specific antenna from said plurality antennas for carrying out one or more of said ranging sessions, wherein the antenna selection unit is configured to select said specific antenna in dependence on one or more parameters indicative of a communication quality between the antennas and the external communication counterpart. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication device is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided for carrying out said method.

Abstract: In accordance with a first aspect of the present disclosure, a communication system is provided, comprising: a plurality of communication nodes which are operatively coupled to each other, wherein each of said communication nodes comprises a first radio frequency (RF) communication unit configured to perform ranging sessions with an external communication device; a controller configured to create a logical subset of said communication nodes based on an indication of a channel quality between the communication nodes and the external communicationdevice,whereinsaidindicationofthechannelqualityhasbeenobtained using a second RF communication unit comprised in each of said communication nodes; the controller further being configured to cause that only the communication nodes included in said logical subset perform said ranging sessions with the external communication device. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication system is conceived.

Abstract: In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: a plurality of antennas configured to receive an ultra-wideband signal; a processing unit configured to determine an angle of arrival, AoA, of the ultra-wideband signal, wherein said AoA is based on a phase difference of arrival, PDoA, derived from the ultra-wideband signal; a polarization angle estimation unit configured to estimate a polarization angle of the ultra-wideband signal; wherein the processing unit is further configured to determine the AoA of the ultra-wideband signal using the polarization angle estimated by the polarization angle estimation unit. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication device is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided for carrying out said method.

Abstract: In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: an ultra-wideband (UWB) communication unit configured to carry out UWB communication with an external communication device; a plurality of antennas operatively coupled to said UWB communication unit, at least one inertial sensor; an antenna selection unit configured to select, based on an output of the inertial sensor, a specific antenna of said plurality of antennas for carrying out the UWB communication. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication device is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided for carrying out said method.

Abstract: In accordance with a first aspect of the present disclosure, a localization system is provided, comprising: a plurality of ultra-wideband (UWB) communication nodes; a plurality of antennas, each one of said antennas being included in one of said UWB communication nodes; an antenna selection unit configured to select a subset of said antennas for use in ranging operations that output a position estimate of an external device; wherein the antenna selection unit is configured to select said subset in dependence on at least one previous ranging operation. In accordance with a second aspect of the present disclosure, a corresponding method of operating a localization system is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided, comprising computer-executable instructions that, when executed by a localization system, cause said localization system to carry out a method of the kind set forth.

Abstract: There is described a radar system (100) and a corresponding method, the radar system (100) comprising i) a control unit (110), configured for generating a code (C) comprising a sequence of code symbols (211), wherein generating the code (C) comprises randomly selecting a plurality of code symbols (211) from a code symbol pool (310) comprising a plurality of code symbols (211), ii) a transmitter (120), configured for generating a signal (S) from the code (C), and further configured for transmitting the signal (S), iii) a receiver (130), configured for receiving an echo (E) of the signal (S), and iii) a correlator (140), configured for correlating each code symbol of the code (C?) of the received echo (E) of the signal (S) to a corresponding symbol template (R) associated with the correlator (140); wherein the radar system (100) is further configured for synchronizing the symbol template (R) to the code (C) of the signal (S).

Abstract: There is described a ultra-wide band (UWB) communication device, comprising: i) a UWB antenna, configured to receive a UWB signal from a further UWB communication device, and ii) a control device, configured to iia) determine an angle of arrival (?) based on the received UWB signal, iib) determine a distance between the UWB communication device and the further UWB communication device, and thereby iic) compensate for a distance determination disturbance using the determined angle of arrival (?). Further, a UWB communication system and a method of determining a distance are described.

Abstract: In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: a plurality of antennas; a communication unit configured to execute ranging sessions with an external communication counterpart through said antennas; an antenna selection unit configured to select a specific antenna from said plurality antennas for carrying out one or more of said ranging sessions, wherein the antenna selection unit is configured to select said specific antenna in dependence on one or more parameters indicative of a communication quality between the antennas and the external communication counterpart. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication device is conceived. In accordance with a third aspect of the present disclosure, a computer program is provided for carrying out said method.