Abstract: A distributed FMCW radar communication system for interference mitigation in an ego unit comprising at least one RadCom unit arranged for radar sensing in a radar mode and for data communication in a communication mode with at least one target unit by switching between the radar mode and the communication mode in time and using separate frequency bands for the radar mode and the communication mode, using a random medium access technique for communication, where the ego unit comprises a plurality of RadCom units and a control unit adapted to control the plurality of RadCom units to use different starting times and frequency bands based on at least one received control message by means of communication during a radar frame duration (Tf) received by means of the data communication, where the starting times of different FMCW radars are separated sufficiently so as they are orthogonal.

Abstract: A method for optimizing user equipment wireless localization using K reconfigurable intelligent surfaces reflecting signal(s) transmitted between a base station and the user equipment, the method including, whatever an a priori position of the user equipment selecting at least one reconfigurable intelligent surface to activate among the K reconfigurable intelligent surfaces, determining phases of elements of the at least one reconfigurable intelligent surface, by minimizing a predetermined cost function, depending on the a priori position, and accounting for a predetermined position error bound of the user equipment, while ensuring that at most K reconfigurable intelligent surfaces are selected, ensuring that the minimum Euclidian distance between two consecutive selected reconfigurable intelligent surfaces of a predetermined configuration, is strictly higher than a predetermined value limiting interference between additional multipath components generated by the at least one reconfigurable intelligent surfac

Abstract: A method for optimizing user equipment wireless localization using K reconfigurable intelligent surfaces reflecting signal(s) transmitted between a base station and the user equipment, the method including, whatever an a priori position of the user equipment selecting at least one reconfigurable intelligent surface to activate among the K reconfigurable intelligent surfaces, determining phases of elements of the at least one reconfigurable intelligent surface, by minimizing a predetermined cost function, depending on the a priori position, and accounting for a predetermined position error bound of the user equipment, while ensuring that at most K reconfigurable intelligent surfaces are selected, ensuring that the minimum Euclidian distance between two consecutive selected reconfigurable intelligent surfaces of a predetermined configuration, is strictly higher than a predetermined value limiting interference between additional multipath components generated by the at least one reconfigurable intelligent surfac

Abstract: A distributed FMCW radar communication system for interference mitigation in an ego unit comprising at least one RadCom unit arranged for radar sensing in a radar mode and for data communication in a communication mode with at least one target unit by switching between the radar mode and the communication mode in time and using separate frequency bands for the radar mode and the communication mode, using a random medium access technique for communication, where the ego unit comprises a plurality of RadCom units and a control unit adapted to control the plurality of RadCom units to use different starting times and frequency bands based on at least one received control message by means of communication during a radar frame duration (Tf) received by means of the data communication, where the starting times of different FMCW radars are separated sufficiently so as they are orthogonal.

Abstract: According to certain embodiments, a method in a first wireless device (10A) comprises determining (100) an intended pilot sequence that the first wireless device (10A) intends to send to an access node (20), determining (112-116) whether another wireless device (10B; 10N) is using a similar pilot sequence, and transmitting (122) the intended pilot sequence to the access node (20) in a next available time instance in response to a determination that another wireless device (10B, 10N) is not using the similar pilot sequence.

Abstract: The present disclosure relates to coordinating the pilot sequences that are used by several wireless devices being served by one or more network nodes. In particular it relates to coordinating pilot signals used by adjacent cells or by cells within a limited area. The disclosure also relates to a pilot coordination unit, to a network node, to a wireless device and to corresponding methods and computer programs. The disclosure proposes a method performed in a pilot coordination unit (120) in a communication system, for coordinating pilot sequences used by several wireless devices (10a, 10b) served by one or more network nodes (110a, 110b). The method comprises obtaining (S12), estimated angles of arrival, of the wireless devices (10a, 10b), in the corresponding serving network nodes (110a, 110b). The method further comprises allocating (S14) pilot sequences, to be used by the wireless devices (10a, 10b) based on the obtained estimated angles of arrival.

Abstract: According to certain embodiments, a method in a first wireless device (10A) comprises determining (100) an intended pilot sequence that the first wireless device (10A) intends to send to an access node (20), determining (112-116) whether another wireless device (10B; 10N) is using a similar pilot sequence, and transmitting (122) the intended pilot sequence to the access node (20) in a next available time instance in response to a determination that another wireless device (10B, 10N) is not using the similar pilot sequence.

Abstract: The present disclosure relates to coordinating the pilot sequences that are used by several wireless devices being served by one or more network nodes. In particular it relates to coordinating pilot signals used by adjacent cells or by cells within a limited area. The disclosure also relates to a pilot coordination unit, to a network node, to a wireless device and to corresponding methods and computer programs. The disclosure proposes a method performed in a pilot coordination unit (120) in a communication system, for coordinating pilot sequences used by several wireless devices (10a, 10b) served by one or more network nodes (110a, 110b). The method comprises obtaining (S12), estimated angles of arrival, of the wireless devices (10a, 10b), in the corresponding serving network nodes (110a, 110b). The method further comprises allocating (S14) pilot sequences, to be used by the wireless devices (10a, 10b) based on the obtained estimated angles of arrival.

Abstract: A system and corresponding method using a cooperative localization technique for self identifying a location of a wireless device in a wireless network is presented. The system may estimate an arbitrary signal metric as a function of a signal received by the wireless device from the at least one other wireless device in the wireless network. The system may also convert at least one belief representing a distribution of at least one possible location of the at least one other wireless device to generate at least one converted belief. The system may further determine a self-belief as a function of the at least one converted belief and identify a self location, as a function of the self-belief, within the wireless network.

Abstract: A method of equalization used to estimate a transmitted signal given a received output is presented herein. The equalization method involves modeling a transmission channel as a Hidden Markov Model (HMM). The HMM channel is evaluated as a finite state machine. A Markov Chain Monte Carlo technique of sampling and computation is then utilized to estimate the transmitted signal.

Abstract: A system and corresponding method using a cooperative localization technique for self identifying a location of a wireless device in a wireless network is presented. The system may estimate an arbitrary signal metric as a function of a signal received by the wireless device from the at least one other wireless device in the wireless network. The system may also convert at least one belief representing a distribution of at least one possible location of the at least one other wireless device to generate at least one converted belief. The system may further determine a self-belief as a function of the at least one converted belief and identify a self location, as a function of the self-belief, within the wireless network.

Abstract: A method of equalization used to estimate a transmitted signal given a received output is presented herein. The equalization method involves modeling a transmission channel as a Hidden Markov Model (HMM). The HMM channel is evaluated as a finite state machine. A Markov Chain Monte Carlo technique of sampling and computation is then utilized to estimate the transmitted signal.