Abstract: A radio receiver includes a local oscillator arrangement and a controller. The local oscillator arrangement is arranged to provide a signal for down-conversion of radio frequency signal to an intermediate frequency or a baseband frequency in the radio receiver, and the local oscillator arrangement is capable of selectably providing multiple frequency generation qualities. The controller is arranged to estimate a tolerable frequency generation quality for the current operation of the radio receiver or determine whether the current operation of the radio receiver is satisfactory in sense of a currently provided frequency generation quality, and based on the estimation or determination adjust frequency generation quality of the local oscillator arrangement by selecting one of the multiple frequency generation qualities. A radio arrangement, a method and a computer program are also disclosed.

Abstract: A mixed numerology OFDM system is presented herein relative to a first OFDM numerology having a first subcarrier spacing and associated with a first signal having a first length. A second signal having a second length and associated with a second OFDM numerology having a second subcarrier spacing greater than the first subcarrier spacing is generated by generating a sub-frame comprising redundant data appended to each of a plurality of OFDM symbols and generating the second signal by appending group redundant data to the sub-frame such that the second length equals the first length. The number of OFDM symbols in the sub-frame is selected such that a length of the sub-frame is as large as possible without exceeding the length of the first OFDM symbol in the first signal. The receiver may extract the first the first and second signals from a received composite signal using a single FFT.

Abstract: Systems and methods of performing data transmission and reception in a communication system are presented. In one exemplary embodiment, a method performed by a wireless device for transmitting a signal in a first communication system that is frequency-domain multiplexed with a second communication system may include generating (201), by a modulator (401), a modulated signal that represents one or more information symbols. The modulated signal may include one or more modulation symbols of the first communication system. The method may also include filtering (203), by a pulse shaping filter (403), the modulated signal to obtain the filtered modulated signal. The pulse shaping filter (403) may be configured to operate with a period that corresponds to the symbol rate of the second communication system. In addition, the method may include transmitting (209), by a transmitter (409), the filtered modulated signal at a carrier or sub-carrier frequency of the first communication system.

Abstract: A technique for generating a radio signal (504) for transmitting a protocol data unit (PDU) in a radio network is described. The PDU includes a first portion and a second portion. As to a method aspect of the technique, a first signal indicative of the first portion of the PDU is amplified for radio transmission using a power amplifier (630) in a first operating state. The power amplifier is switched from the first operating state to a second operating state different from the first operating state. A second signal indicative of the second portion of the PDU is amplified for radio transmission using the power amplifier in the second operating state, wherein a first bandwidth of the first signal is greater than a second bandwidth of the second signal.

Abstract: A wireless communication node (300) and method therein for generating multicarrier signals by means of backscattering in a wireless communication system (100) are disclosed. The wireless communication node (300) comprises a plurality A of antennas (310) configured to receive a radio frequency. The wireless communication node (300) further comprises a plurality A of switches (320), each switch has a number M of states. The wireless communication node (300) further comprises a number of impedance matrices (330), each impedance matrix comprising a number M of impedances (Z1, Z2 . . . ), each antenna is coupled to one of the impedance matrices (330) by one of the plurality A switches (320). The wireless communication node (300) further comprises a symbol mapper, a serial to parallel converter and one or more modulators (340) configured to generate a number A of baseband subcarrier signals based on data symbols (342) to be transmitted.

Abstract: A method of a network node adapted to transmit a wake-up signal for waking up one or more wireless communication receivers is disclosed, as well as a method for the wireless communication receiver, such network node and wireless communication receiver, and computer programs for implementing the methods. Each wireless communication receiver is comprised in a wireless communication device and is associated with a wake-up radio adapted to wake up the wireless communication receiver in response to detecting the wake-up signal. An indication of a maximum frequency error of the wake-up radio associated with the wireless communication receiver is acquired such that a non-data transmission bandwidth for exclusive use by the wake-up signal can be determined. The wake-up signal is transmitted over a wake-up signal transmission frequency interval having a wake-up signal transmission bandwidth, wherein the wake-up signal transmission bandwidth is less than, or equal to, the non-data transmission bandwidth.

Abstract: A technique for radio transmitting data is described. As to a method aspect of the technique data to be transmitted to a receiver is represented by at least two partial modulation symbols. Each of the at least two partial modulation symbols is associated to a different layer of the radio transmission to the receiver. A modulation symbol is generated by combining the at least two partial modulation symbols at different power levels according to the associated layer. The modulation symbol is transmitted to the receiver.

Abstract: A method of transmitting an amplitude shift keying signal comprises determining timing of an Orthogonal Frequency Division Multiplex, OFDM, transmission of a concurrently operating transmission system, wherein the OFDM transmission applies an extended representation for at least a part of the transmitted OFDM transmission, which extended representation comprises an extended part, representing a data signal to be transmitted by amplitude shift keying, and transmitting the amplitude shift keyed data signal intermittently aligned with the OFDM transmission such that symbols of the amplitude shift keyed data signal occurs only during the extended part of the OFDM transmission. The data signal may represent a wake-up signal arranged to address a wake-up radio. A transmitter, network node and computer program for implementing the method are also disclosed.

Abstract: Disclosed is a network node and a method performed by a network node of a wireless communication network for wireless transmission of signals to wireless communication devices. The method comprises selecting adapted modulation and coding scheme, MCS, for a first signal to be transmitted to a first wireless communication device at first frequency bandwidth, the MCS being adapted to that second signal is to be transmitted to a second wireless communication device concurrently with the first signal, the second signal being transmitted at second frequency bandwidth that is subset of the first frequency bandwidth, the second frequency bandwidth being narrower than the first frequency bandwidth. The method comprises transmitting first signal to the first wireless communication device at first frequency bandwidth coded with adapted MCS, and transmitting the second signal to the second wireless communication device at second frequency bandwidth, the second signal being sent concurrently with the first signal.

Abstract: Described herein are compositions including at least one omega-3 fatty acid (either in the triglyceride, ester or free fatty acid ester form) and at least one surface active agent; wherein the compositions form micelles when in contact with an aqueous medium. Also provided are methods of administering to a subject a composition including at least one omega-3 fatty acid (either in the triglyceride, ester or free fatty acid ester form) and at least one surface active agent, wherein the compositions form micelles when in contact with an aqueous medium, and the bioavailability of the omega-3 fatty acid is substantially independent of a food effect.

Abstract: Described herein are compositions including at least one omega-3 fatty acid (either in the triglyceride, ester or free fatty acid ester form) and at least one surface active agent; wherein the compositions form micelles when in contact with an aqueous medium. Also provided are methods of administering to a subject a composition including at least one omega-3 fatty acid (either in the triglyceride, ester or free fatty acid ester form) and at least one surface active agent, wherein the compositions form micelles when in contact with an aqueous medium, and the bioavailability of the omega-3 fatty acid is substantially independent of a food effect.

Abstract: A method performed in a network control entity for enabling access to a wireless tag in a wireless communications network is provided. The wireless communications network includes two or more access points, APs. The network control entity configures a first AP to transmit a radio frequency signal in a first time period, and configures a second AP to receive, in the first time period, a radio signal reflected from the wireless tag using the transmitted radio frequency signal. A network control entity for enabling access to at least one wireless tag in a wireless communications network is also provided. Further, an access point AP and a method therein for enabling access to a wireless tag in a wireless communications network are also provided.

Abstract: In one aspect, a transmitting device forms an OFDM signal comprising a plurality of OFDM symbols and carrying user data targeted to a main transceiver of one or more receiving devices. The transmitting device modulates the OFDM signal with a wake-up signature (WUS) targeted to awake-up receiver (WUR) of a receiving device other than the one or more receiving devices. The modulating is performed so as to superimpose a modulation of signal power on the OFDM signal, the resulting variations in signal power conveying the wake-up signature. The modulated OFDM signal is transmitted, where a receiving device receives the OFDM at its WUR. The receiving device detect a WUS modulated in the OFDM signal that is targeted to a wake-up receiver of a receiving device other than the one or more receiving devices. The receiving device wakes up its main transceiver in response to the detecting.

Abstract: A technique for transmitting data on carriers each using a non-sinusoidal waveform is described. As to a method aspect of the technique, a fundamental frequency (118) is assigned to each of the carriers using the non-sinusoidal waveform. Baseband frequencies corresponding to a set of harmonic components of the non-sinusoidal waveform at each of the assigned fundamental frequencies (118) are disjoint. An energy of each of the harmonic components in the set is greater than a predefined threshold value. Modulation symbols (116) representative of the data are transmitted on at least one or all of the carriers.

Abstract: A technique for transmitting data from a passive radio device (100) is described. As to a method aspect of the technique, an antenna (102) of the passive radio device (100) is exposed to an incident radio signal (502). A frequency domain representation of the incident radio signal (502) comprised at least one muted gap between active subcarriers within a bandwidth of the incident radio signal (502). The incident radio signal (502) is backscattered from the antenna by modulating an impedance of the antenna according to the data using at least two different modulation frequencies that differ by less than the bandwidth.

Abstract: An orthogonal code is disclosed, defined by an encoding matrix CK having N rows and N?P+1 columns. In the encoding matrix, no column is equal to another column, and exactly one of the columns of the encoding matrix includes N elements having the same real non-zero value. Each of the other columns of the encoding matrix includes exactly (N?L) elements having zero value and exactly L elements having real, non-zero, alternating positive and negative values of the same magnitude. For each of these columns, the elements of each adjacent pair of the L elements are separated by (N?L)/L elements having zero value. A method of constructing an orthogonal code is also disclosed, together with a method for generation of a signal to be transmitted using the orthogonal code, and a corresponding arrangement, a wireless communication transmitter, and a computer program product.

Abstract: A technique for performing power level control of one or more beams transmitted by a wireless transmission device to a wireless reception device is disclosed. A method implementation of the technique is performed by the wireless transmission device and comprises transmitting (S202) each of the one or more beams at a default power level of the respective beam, detecting (S204) an obstacle entering the one or more beams based on a change in an electromagnetic environment associated with the one or more beams, the obstacle, once entered, at least partially blocking the one or more beams with respect to the wireless reception device, and decreasing (S206), for each of the one or more beams, an output power of the respective beam from the default power level of the respective beam to a predetermined threshold power level of the respective beam.

Abstract: A method of placing a node (10) in a wireless communication network into a standby mode, said node (10) comprising a plurality of antennae (13, 14), a primary radio (11) and a secondary radio (12) wherein said primary radio (11) and said secondary radio (12) share at least two of said plurality of antennae (14), said node (10) further comprising a Radio Frequency, RF, switch (15) arranged to connect said secondary radio (12) to any one of said at least two shared antennae (14), wherein said primary radio (11) is arranged to operate within a first frequency band, and wherein said secondary radio (12) is arranged to operate within a second frequency band, wherein said second frequency band is a sub-band of said first frequency band, said method comprising the steps of receiving (110) a packet; determining (120) for each of said shared antennae (14) separately, a signal quality indicator of said second frequency band corresponding to said received packet; selecting (130) one of said shared antennae (14) based on

Abstract: A method for operating an access point providing access to a wireless network for a plurality of wireless devices, wherein the wireless network includes at least one transmission channel with a sequence of transmission slots. The method includes assigning a first transmission slot to a first wireless device for a scheduled transmission with a priority access to the first transmission slot for the first wireless device, detecting during the first transmission slot that the first wireless device is currently not transmitting data in the assigned first transmission slot, and transmitting an indication to at least a subset of the plurality of wireless devices indicating that at least a time range in the first transmission slot until an end of the first transmission slot is available to the plurality of wireless devices for a data transmission using a random access procedure.

Abstract: A method is provided for improvising handover in a mobile station configured to operate a time division multiple access, TDMA, protocol in a global system for mobile communications, GSM, telecommunication network. The method comprises the steps of receiving a handover command requesting that the mobile station perform a handover operation from a serving cell to a target cell, and configuring the mobile station to transmit and receive user plane data with the serving cell and the target cell during a time period between receiving the handover command and the handover operation being completed.