Selected mapping (SLM) schemes are commonly employed to reduce the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. It has been shown that computational complexity of traditional SLM scheme can be substantially reduced by adopting conversion vectors obtained using inverse fast Fourier transform (IFFT) phase rotation place conventional IFFT operations [C.-L. Wang and Y. Ouyang, ¿Low-Complexity Mapping Schemes for Peak-to-Average Power Ratio...

Intelligent reflecting surface (IRS) has recently emerged as a promising technology for 6 G wireless systems, due to its capability reconfigure the propagation environment. In this paper, we investigate Rate-Splitting Multiple Access (RSMA) IRS-assisted downlink system, where base station (BS) communicates with single-antenna users help of an IRS. RSMA relies on rate-splitting (RS) at BS and successive interference cancellation (SIC) provides generalized multiple access framework. We derive...

Due to the dynamic nature of a vehicular fog computing environment, efficient real-time resource allocation in an Internet Vehicles (IoV) network without affecting quality service any onboard vehicles can be challenging. This article proposes priority-sensitive task offloading and scheme IoV network, where periodically exchange beacon messages inquire about available services other important information necessary for making decisions. In proposed methodology, are stimulated share their idle...

Reconfigurable intelligent surface (RIS) has emerged as important transmission technology to improve the spectral/energy efficiency in next-generation (beyond 5G (B5G) and 6G) wireless communication network numerous applications areas of Internet Things (IoT) vehicular systems. Thus, this paper, we investigate application RIS unmanned aerial vehicle (UAV) enabled system with infinite finite block length codes, where UAV communicates single antenna ground presence several interfering vehicles...

In this work, we consider a hybrid aerial full-duplex (FD) relaying protocol consisting of reconfigurable intelligent surface (RIS) mounted over an FD unmanned vehicle (UAV) relay operating in the decode and forward mode to assist information transfer between base station multiple users. For better spectral efficiency, investigate use non-orthogonal access (NOMA) such networks focus on both performance analysis design optimization considered RIS-NOMA network under imperfect channel state...

This paper investigates unmanned aerial vehicles (UAVs)-assisted full-duplex (FD) non-orthogonal multiple access (NOMA) system based cellular network, aiming to improve overall sum-rate throughput of the through dynamic user clustering, optimal UAV placement and power allocation. Since each operates in FD mode, self-interference (SI), co-channel interference (CCI), inter-UAV (IUI) intra-node (INI) dominate system’s performance. Consequently, we propose an unconventional two-stage...

Reconfigurable intelligent surface (RIS) has emerged as an important transmission technology for numerous applications in Internet of Things (IoT) systems. Thus, this paper, we investigate the application RIS energy harvesting (EH) based unmanned aerial vehicle (UAV) communication network with finite block length (BL) codes, where a rotary wing type flying UAV communicates multiple single antenna IoT users aid RISs mounted on several skyscraper buildings. To transmit signal to particular...

In this paper, a phase-shift coupled simultaneous transmitting/refracting and reflecting reconfigurable intelligent surface (STAR-RIS)-aided uplink (UL) rate-splitting multiple access (RSMA) system is investigated to achieve improved spectral efficiency. The considered UL RSMA splits the rate for each user by dividing their message into sub-messages these are transmitted base station (BS) via STAR-RIS as direct link between BS absent. particular, we formulate resource allocation design...

In this work, we address the problem of a joint robust transmission, reflection and reception strategy design at an active reconfigurable intelligent surface (RIS)-assisted underlay multiple input output (MIMO) cognitive radio networks in which secondary transmitter serves receivers simultaneously. As such, study impact imperfection channel state information (CSI) following norm-bounded error model. A sum mean squared (MSE) minimization is formulated by jointly optimizing transmit...

Digital twin (DT) has emerged as a promising technology for improving resource allocation decisions in Internet of Vehicles (IoV) networks. In this paper, we consider an IoV network where mobile edge computing (MEC) servers are deployed at the roadside units (RSUs). The provides ubiquitous connections even areas uncovered by RSUs with assistance unmanned aerial vehicles (UAVs) which can act relay between and task vehicles. A virtual representation is established DT captures dynamics entities...

In this work, we consider a hybrid aerial full-duplex (FD) relaying consisting of reconfigurable intelligent surface (RIS) mounted over an FD unmanned vehicle (UAV) relay operating in decode and forward mode to assist the information transfer between base station multiple users. For better spectral efficiency, investigate use rate splitting access (RSMA) such networks focus on joint optimization RSMA parameters, 3D-coordinates UAV/RIS, phase shift matrix at RIS along with analyzing outage...

In this paper, we explore the use of reconfigurable intelligent surface (RIS) in unmanned aerial vehicle (UAV) based multiuser downlink communications, where a flying UAV serves multiple single antenna users through RISs mounted on various buildings. More specifically, consider selection outdated and imperfect channel state information (CSI) composite UAV-RIS-User channels at UAV. After process, communicates to user via selected also with direct link. Particularly, derive an infinite series...

The computational complexity and peak-to-average power ratio (PAPR) of conventional precoded orthogonal frequency division multiplexing (OFDM) systems can be reduced using a T-OFDM system based on the Walsh-Hadamard matrix. present paper proposes novel precoding scheme for further reducing PAPR T-OFDM. In proposed scheme, matrix is combined with an inverse discrete Fourier transform to construct new at transmitter. Notably, both unitary circulant, each column being perfect Gaussian integer...

Due to flexibility in deployment and high mobility, unmanned aerial vehicles (UAVs) can improve the performance of cellular networks. In this paper, we focus on UAV-assisted cooperative communication network where multiple UAVs serve as relays between a pair ground users. Based signal-to-noise ratio (SNR), propose two UAV selection strategies namely best harmonic mean (HM) downlink SNR (BDS). Then, derive closed-form expressions for outage probability, throughput coverage probability both...

A reconfigurable intelligent surface (RIS)-assisted wireless communication system with non-linear energy harvesting (EH) and ultra-reliable low-latency constraints is considered for its possible applications in industrial automation. distant data-center (DC) communicates the multiple destination machines help of a full-duplex (FD) server machine (SM) RIS. Assuming deficiency enough transmission power at FD-SM, SM near vicinity destinations industry to forward data received from DC. The...

This work studies an unmanned aerial vehicle (UAV)-assisted wireless communication system where UAV acts as base station (BS) and serves multiple ground users simultaneously using rate-splitting access (RSMA). We propose a new architecture called RSMA-UAV that leverages the interplay between (RS) shows effect of RSMA on performance. Further, we derive closed-form expressions outage probability corresponding throughput at each user considering independent non-identical Nakagami-...

Owing to the factors such as controllable mobility, ready-to-use technology, low cost, easy implementation, and so on, unmanned aerial vehicle (UAV) possesses tremendous potential be one of primary candidates for next-generation (6G) wireless networks. This paper presents a UAV-assisted multiuser communication network where multiple antenna UAV base station (BS) serves single ground users (GUs). UAV-BS uses laser source-based charging mechanism fulfill its power requirement applies...

In this paper, a reconfigurable intelligent surfaces (RISs)-aided millimeter wave (mmWave) uplink (UL) rate-splitting multiple access (RSMA) system is investigated which targets to achieve better rate performance and enhanced coverage capability for users. The considered UL RSMA model splits the each user by dividing their message into parts hence exploits all necessary degrees of freedom maximum capacity region high fairness. particular, we focus on sum-rate maximization subject joint...

In this paper, an intelligent reflecting surface (IRS) aided uplink (UL) rate-splitting multiple access (RSMA) system is investigated for dead-zone users where the direct link between and base station (BS) unavailable UL transmission carried out only through IRS. considered RSMA system, a message of each user split into several sub-messages part contributes to rate that depending upon proportions BS decodes them using appropriate decoding order. The problem sum-rate maximization formulated...

The multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system with space-frequency block coding (SFBC) is an attractive technique due to its robustness for time selective fading channels. However, the SFBC MIMO-OFDM also inherits from OFDM systems drawback of high peak-to-average power ratio (PAPR) transmitted signal. selected mapping (SLM) method a major scheme PAPR reduction. Unfortunately, computational complexity traditional SLM relatively since it...

This letter considers selection of the optimal peak reduction tone (PRT) set for reservation (TR) scheme to reduce peak-to-average power ratio (PAPR) an orthogonal frequency division multiplexing (OFDM) signal. In TR scheme, PAPR performance achieved by a randomly generated PRT is superior that consecutive and interleaved set. However, requires exhaustive search all combinations possible sets, which known be nondeterministic polynomial-time (NP)-hard cannot solved practical number tones....

Generalized Spatial Modulation (GSM) is being considered for high capacity and energy-efficient networks of the future. However, signal detection due to inter-channel interference among active antennas a challenge in GSM systems focus this letter. Specifically, we explore feasibility using deep neural (DNN) GSM. In particular, propose block DNN (B-DNN) based architecture, where their transmitted constellation symbols are detected by smaller sub-DNNs. After N-ordinary detection, Euclidean...

An intelligent reflecting surface (IRS) is an emerging technology in the next-generation (B5G and 6G) wireless communications with aim of improving spectral/energy efficiency networks. In this paper, we focus on multiple IRS-aided multiuser multiple-input single-output (MISO) downlink network, where each IRS deployed near to cell boundary cellular network order help transmission cell-edge users. To achieve significant performance benefits provided by rate-splitting (RS) scenario, two-layer...

The efficient and effective framework for next-generation (5G beyond 5G) wireless networks should include mission-critical aspects such as ultralow latency ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\leq \!\!1$</tex-math></inline-formula> ms), ultrahigh reliability (99.999%), enhanced data rate. Billions of ubiquitously connected devices are expected to serve various industrial applications in...

This letter focuses on a novel resource allocation design for multi-reconfigurable intelligent surface (RIS)-aided multi-input and single-output (MISO) ultra-reliable low-latency communication (URLLC) system. In particular, we formulate the sum-rate maximization problem joint optimization of block-length packet-error probability each user, precoder at base-station (BS) passive beamforming RIS. To solve it, provide an alternating framework which involves decoupling original into sub-problems...