Abstract: Some embodiments in the present disclosure relate to facilitating coexistence of communication applications and sensing applications in at least partially overlapping bandwidths. A sensing device, a joint sensing and communication device and/or a communication device are provided that transmit a request for transmission resources to a scheduling device in a communication format compliant with a communication standard. In response, the scheduling device allocates resources corresponding to a frame format compliant with a communication standard according to which the communication device operates, if the request was for a communication application or the scheduling device allocates resources corresponding to a frame format compliant with the communication standard or to a frame format suitable for a sensing application, if the request was for the sensing application.

Abstract: Disclosed is method of estimating the number of channel taps and channel coefficients in a concatenated way in order for the signal transmitted to be received successfully in the receiver in wireless communication systems. In particular, disclosed is a model that learns the number of channel taps and channel coefficients in a concatenated way in order to benefit from the existing correlation between the number of channel taps and channel coefficients. This model is based on a deep learning-based algorithm.

Abstract: Disclosed is a method for detecting the numerology types and bands in the received signal without using any control information in the systems using mixed numerology (e.g. 5G standard) and to a signal receiving unit operating according to the method.

Abstract: A Frame Design for Joint Sensing and Communications using Position Modulation A method for frame design of radar and communication system is proposed which consists of following steps: a. Splitting incoming information bits (70) by bit splitter (40) b. The bits are splitted as b1 and b2. c. b1 bits are used to define the position of radar sequence over the time axis (b). d. After identifying the position for the radar sequence; the radar sequence is transmitted over that position via (c). e. the remaining b2 bits are BPSK modulated and are transmitted over the remaining positions through (d).

Abstract: Disclosed is a secure scheme that incorporates both internal and external eavesdroppers to secure all users' links in the downlink PD-NOMA. In particular, the proposed scheme implies that the BS induces a phase shift in each user's symbol based on its corresponding instantaneous channel phase. The phase shift of each user is restricted such that the original symbol is moved to the location of another symbol in the constellation diagram. Therefore, as each user is aware of its instantaneous channel phase only, it will be able to recover the actual phase of its corresponding symbol. Thus, the proposed scheme does not only protect the data against eavesdroppers, but it also guarantees confidentiality and privacy against all other users.

Abstract: Disclosed is a method to protect wireless communication signals from being overheard/intercepted by malicious eavesdroppers. The method has three main steps: selection of the coordinating transmission points (TPs) for the user whose communication is to be secured, splitting of the data that is to be sent to the aforementioned user into N parts, where N is the number of TPs used and channel based manipulation of the transmitted signal to ensure that delay spread is less than guard duration.

Abstract: Disclosed is a method pilot-aided channel estimation in Orthogonal Frequency Division Multiplexing (OFDM) systems regardless of the frequency selectivity severity of the channel is proposed.

Abstract: The present disclosure relates to the detection of impairments in a received wireless communication signal. It may detect the presence of each of N types (sources) of impairments and possibly the amount of the impairment present in the received signal. The detection includes processing of the received signal by a trainable model trained to distinguish N sources of impairments by applying learning, with N being an integer larger than one. The trainable model outputs, for each source j of the N sources, a contribution of the j-th source of impairments to the obtained signal. The contribution may be binary, indicating the presence or absence of the j-th source of impairment, or may also indicate the amount of impairment.

Abstract: Disclosed is a novel method proposed for Radar and Communication coexistence in the mm Wave band by exploiting channel sparsity which is described by the geometrical channel model. The joint transmitter and receiver in bistatic broadcast joint radar and communication (JRC) system have multiple collocated antennas.

Abstract: The present disclosure relates to channel estimation, at a receiving device of a communication system employing a (re)configurable surface. The channel estimation includes beamforming search to obtain trained reflection coefficients of the configurable surface and an angle of arrival, AoA, of the signals at the receiving device. Then, based on the configurable surface and the obtained AoA at the receiving device, reflection coefficients of the configurable surface are derived for an ideal channel portion between the transmitting device and the configurable surface. According to a relation between the trained reflection coefficients and the estimated reflection coefficients, the estimation of the characteristics of a channel between the transmitting device and the configurable surface is performed.

Abstract: Disclosed is a channel-dependent multi-carrier code division multiple access (MC-CDMA) technique with adaptive spreading codes. Adaptive spreading codes are used for each subcarrier per user which increase the security level of conventional MC-CDMA. Two different map designs are proposed: fixed and adaptive interval maps. These maps are shared among all nodes and gives information about the spreading code sequences for corresponding channel gains.

Abstract: Provided is a control apparatus and a control method for a wireless communication system. The control apparatus is configured to determine for candidate group(s) of access points whether backhaul link feature(s) meet a requirement for coordinated communication with a terminal device. The requirement for coordinated communication includes a requirement for multi-link operation and/or a requirement for a coordination scheme. Based on a result of this determination, a candidate group of access points is selected as a group of APs for serving the terminal device in coordinated communication. By disclosing these techniques, the present disclosure provides for considering multi-link operation and/or coordination scheme selection in coordinated communication.

Abstract: The present disclosure relates to a spectrum occupancy prediction, which employs a first trainable module and a second trainable module. The first and the second trainable modules predict spectrum occupancy at a respective first and second communication devices based on past occupancies and/or occupancies in adjacent subband(s). The prediction from the first trainable module and the second trainable module is input to a trainable output (third) module, which then provides the spectrum occupancy prediction.

Abstract: The method is related to the smart frame design that contains multi-user single-carrier (SC) transmission to support 5G-and-beyond communication systems that permit enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable low-latency communication (URLLC) services. The method enhances the capacity of the system in line with the filter parameters to be selected according to the user's requirements and to meet the requirements of the desired and adjacent users.

Abstract: Systems and methods may provide location-based security using multipoint cryptography. The method may include receiving, by a controller, an original message for secure delivery to a mobile terminal. The method may also include generating, by the controller, a plurality of messages to be delivered to the mobile terminal using geographic diversity. The method may further include sending, by the controller, the plurality of messages to geographically diverse transmitters for transmission to the mobile terminal.

Abstract: Methods and techniques are described for reducing PAPR in a system with multiple numerologies. The PAPR is reduced by means of minimization of a cost function including PAPR for some predefined parameters. For example, PAPR may be minimized for phase and/or amplitude and/or time/cyclic shift adjustment to adjust OFDM symbol phase and/or amplitude, or for number and/or type of numerologies to be combined for the transmission.

Abstract: A receiver of a User Equipment in a mixed numerology multi-service OFDM radio access network receives a control message for resource configuration from the base station instructing the receiver to remove a common (fixed duration) cyclic prefix (CP0) regardless of service type when demodulating received radio signals. Upon this instruction, the receiver implements the method of removing the common cyclic prefix (CP0) every L time domain symbols wherein L=2? for the service type that uses numerology ?. According to one embodiment, the common cyclic prefix (CP0) duration is chosen by the base station as the cyclic prefix of the service type with longest OFDM symbol in its mix of services. The receiver eliminates inter-numerology interference (INI) by equalizing the number of subcarriers used by all service types and their CP regardless of each service type's numerology.

Abstract: An apparatus and method for a multi-service transmitter of an OFDM base station (BS) in a mixed numerology radio access network, wherein the transmitter uses a common cyclic prefix across all service types to eliminate inter-numerology interference (INI) by using a new Frequency Re-sampler (VR) component in the transmitter that converts streams of those services with smaller FFT sizes into a common larger FFT size in the frequency domain, which in effect increases their number of samples. The VR simply causes a multi-service transmitter to mimic a single-service transmitter thereby reducing the required number of ZF precoders to one and causing much fewer number of precoding operations. The transmitter sends resource configuration regarding the use of common CP for all services to each connected UE.

Abstract: A method based on orthogonal frequency division multiplexing (OFDM) called OFDM-subcarrier gap and index modulation (OFDM-SGIM) is proposed in which the gaps between the active subcarriers are exploited to transmit extra bits alongside the conventional QAM symbols. Thereafter, the index modulation is combined with the new proposed OFDM-based scheme to guarantee a fixed subblock size.

Abstract: A system and method utilizing a novel waveform structure based on unique word (UW)—orthogonal frequency division multiplexing (OFDM) is proposed for the applications of joint radar-sensing and communication (JRC). A predetermined chirp sequence is used as the UW in the waveform. The predetermined chirp sequence is used to perform radar functionality, which also increases power efficiency of linear power amplifier that is critical for radar applications.