The ultra-dense network (UDN) has been considered as a promising candidate for future 5G networks to meet the explosive data demand. To realize UDN, reliable, gigahertz bandwidth, and cost-effective backhaul connecting ultradense small-cell BSs macrocell BS are prerequisite. Millimeter-wave can provide potential gigabit-per-second traffic wireless backhaul. Moreover, mmWave easily be integrated with massive MIMO improved link reliability. In this article, we discuss feasibility of...

Channel reciprocity in time-division duplexing (TDD) massive multiple-input multiple-output (MIMO) systems can be exploited to reduce the overhead required for acquisition of channel state information (CSI). However, perfect is unrealistic practical due random radio-frequency (RF) circuit mismatches uplink and downlink channels. This result a significant degradation performance linear precoding schemes, which are sensitive accuracy CSI. In this paper, we model analyse impact RF on TDD...

This letter studies the impact of an intelligent reflecting surface (IRS) on computational performance in a mobile edge computing (MEC) system. Specifically, access point (AP) equipped with server provides MEC services to multiple Internet Thing (IoT) devices that choose offload portion their own tasks AP remaining being locally computed. We deploy IRS enhance system by intelligently adjusting phase shift each element. A joint design problem is formulated for considered assisted system,...

This paper investigates the impact of intelligent reflecting surface (IRS) enabled wireless secure transmission. Specifically, an IRS is deployed to assist multiple-input multiple-output (MIMO) system enhance secrecy performance, and artificial noise (AN) employed introduce interference degrade reception eavesdropper. To improve we aim maximize achievable rate, subject transmit power constraint, by jointly designing precoding transmission, AN jamming, phase shift IRS. We first propose...

Considering a reconfigurable intelligent surface (RIS) aided wireless powered Internet of Things (WP IoT) network. To address the energy-limitation issue, IoT devices in such network can be wirelessly by power station (PS) first and then connect with an access point (AP) using their own harvested energy. The RIS helps enhance energy information receptions downlink transfer (WET) uplink (WIT), respectively. This work unveils impact phase shift error (PSE) transceiver hardware impairment (THI)...

This work presents a potential solution for enabling the use of multicast in 5G New Radio Release 17, called NR Mixed Mode. The proposed multicast/broadcast mode follows one two approaches envisaged 3GPP, which enables dynamic and seamless switching between unicast multicast, both downlink uplink. paper also provides performance evaluation several IMT-2020 KPIs, including available data rate spectral efficiency, user control plane latencies, energy mobility, highlighting advantages this over...

The 3rd Generation Partnership Project (3GPP) has defined based on the Long Term Evolution (LTE) enhanced Multicast Broadcast Multimedia Service (eMBMS) a set of new features to support distribution Terrestrial services in Release 14. On other hand, 5th (5G) system architecture and radio access technology, 5G New Radio (NR), are being standardised from 15 onwards, which so far have only focused unicast connectivity. This may change 17 given Work Item specify basic Access Network (RAN)...

This paper proposes a novel transmission policy for wireless powered sensor network (WPSN) assisted by an intelligent reflecting surface (IRS) to enhance the performance of energy transfer (WET) and information (WIT) with certain phase shifts. To achieve its self-sustainability, IRS collects from station support own control circuit operation. Our proposed considered WPSN is called harvest-then-transmit time switching (IRS-HTT-TS), which capable schedule slots between collection reflection...

In this article, we investigate a resource allocation problem for multicarrier multiuser MISO (multiple-input-Single-output) downlink systems, where multiple co-channel multicast groups are served simultaneously. We consider rate-splitting transmission scheme to address the inevitable inter-group interference under an overloaded multigroup scenario, insufficient number of transmit antennas prevents conventional schemes from neutralizing interference. first formulate optimization maximizing...

This paper exploits an intelligent reflecting surface (IRS) assisted wireless powered mobile edge computing and caching (WP-MECC) network. In particular, IRS is utilized to reflect energy signals from a power station (PS) various IoT devices for harvesting during uplink transfer (WET). These collect support their own partially local computational tasks offloading capabilities access point (AP), with the help of via time or frequency division multiple (TDMA FDMA). The AP equipped cache...

This article investigates a wireless-powered intelligent radio environment, where fractional nonlinear energy harvesting (NLEH) is proposed to enable an reflecting surface (IRS)-assisted Internet of Things (WP IoT) network. The IRS engages in downlink wireless transfer (WET) and uplink information (WIT). We aim improve the overall performance considered network, approach maximize its sum throughput subject constraints two different types beam patterns time durations. To solve formulated...

Unmanned aerial vehicles (UAVs) foster the development of multifield applications and also present opportunities for malicious activities, thus, comprehensive surveillance UAVs is indispensable. Taking advantage rapidly developing communication technology, perceptive mobile networks (PMNs) are emerging to integrate sensing capability into cellular networks, which paves way ubiquitous networked with cooperation among interconnected base stations (BSs). This article explores key issues in...

Wireless sensing and wireless energy are enablers to pave the way for smart transportation a greener future. In this paper, an intelligent reflecting surface (IRS) assisted integrated power transfer (ISWPT) system is investigated, where transmitter in infrastructure networks sends signals sense multiple targets simultaneously harvesting devices (EHDs) them. Recognizing inherent tradeoff between performance, we propose jointly optimize performance via optimizing beamforming IRS phase shift....

The spatial diversity and multiplexing advantages of massive multi-input-multi-output (mMIMO) can significantly improve the capacity non-orthogonal multiple access (NOMA) in machine type communications. However, state-of-the-art grant-free NOMA schemes for mMIMO systems require accurate estimation random channels to perform activity detection following coherent data demodulation, which suffers from excessive pilot overhead latency. To address this, we propose a pre-equalization aided scheme...

This work presents eight demonstrators and one showcase developed within the 5G-Xcast project. They experimentally demonstrate validate key technical enablers for future of media delivery, associated with multicast broadcast communication capabilities in 5th Generation (5G). In 5G-Xcast, three existing testbeds: IRT Munich (Germany), 5GIC Surrey (UK), TUAS Turku (Finland), have been into 5G testing networks, which enables us to our vision a converged infrastructure fixed mobile accesses...

Holographic Teleportation is an emerging media application allowing people or objects to be teleported in a real-time and immersive fashion into the virtual space of audience side. Compared traditional video content, network requirements for supporting such applications will much more challenging. In this paper, we present 5G edge computing framework enabling remote production functions live holographic applications. The key idea offload complex content from end user premises mobile order...

We propose a new antenna selection scheme for massive MIMO system with single user terminal and base station large number of antennas. consider practical scenario where there is realistic correlation among the antennas imperfect channel estimation at receiver side. The proposed exploits sparsity matrix effective limited To this end, we compute sparse by minimising mean squared error. This optimisation problem then solved well-known orthogonal matching pursuit algorithm. Widely used models...

This work provides a detailed performance analysis of the physical layer two state-of-the-art point-to-multipoint (PTM) technologies: evolved Multimedia Broadcast Multicast Services (eMBMS) and Advanced Television Systems Committee -Third Generation (ATSC 3.0).The these technologies is evaluated compared using link-level simulations, considering relevant identified scenarios.A selection Key Performance Indicators (KPI) for International Mobile Telecommunications 2020 (IMT-2020) evaluation...

This paper investigates a secure wireless-powered integrated service system with full-duplex self-energy recycling. Specifically, an energy-constrained information transmitter (IT), powered by power station (PS) in wireless fashion, broadcasts two types of services to all users: multicast intended for users and confidential unicast subscribed only one user while protecting it from any other unsubscribed eavesdropper. Our goal is jointly design the optimal input covariance matrices energy...

A simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided integrated sensing communication (ISAC) dual-secure system is studied in this paper. The sensed target legitimate users (LUs) are situated on the opposite sides of STAR-RIS, energy splitting time switching protocols applied respectively. long-term average security rate for LUs maximized by joint design base station (BS) transmit beamforming receive filter, along with STAR-RIS coefficients, under...

In this paper, we investigate the energy-efficient hybrid precoding design for integrated multicast-unicast millimeter wave (mmWave) system, where simultaneous wireless information and power transform is considered at receivers. We adopt two sparse radio frequency chain antenna structures base station (BS), i.e., fully-connected subarray structures, codebook-based analog according to different structures. Then, formulate a joint digital multicast, unicast splitting ratio optimization problem...

This article discusses the self-sustainability of reconfigurable intelligent surface (RIS) in wireless powered Internet Things (IoT) networks. Our vision is that RIS helps improve energy harvesting and data transmission capabilities simultaneously, without extra utilization RF spectrum consumption. The inherent properties are first discussed to unveil its distinctive features, followed by a broader range use cases motivated as their enabling technology. focus on application IoT networks,...