Search Results - "IEEE communications letters"

Blockchained On-Device Federated Learning by Kim, Hyesung, Park, Jihong, Bennis, Mehdi, Kim, Seong-Lyun

“…By leveraging blockchain, this letter proposes a blockchained federated learning (BlockFL) architecture where local learning model updates are exchanged and…”
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STAR-RISs: Simultaneous Transmitting and Reflecting Reconfigurable Intelligent Surfaces by Xu, Jiaqi, Liu, Yuanwei, Mu, Xidong, Dobre, Octavia A.

“…In this letter, simultaneous transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) are studied. Compared with the conventional…”
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A Simple Design of IRS-NOMA Transmission by Ding, Zhiguo, Vincent Poor, H.

“…This letter proposes a simple design of intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) downlink transmission. In…”
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Secrecy Rate Maximization for Intelligent Reflecting Surface Assisted Multi-Antenna Communications by Shen, Hong, Xu, Wei, Gong, Shulei, He, Zhenyao, Zhao, Chunming

“…We investigate transmission optimization for intelligent reflecting surface (IRS) assisted multi-antenna systems from the physical-layer security perspective…”
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Reconfigurable Intelligent Surface (RIS) Assisted Wireless Coverage Extension: RIS Orientation and Location Optimization by Zeng, Shuhao, Zhang, Hongliang, Di, Boya, Han, Zhu, Song, Lingyang

“…Recently, reconfigurable intelligent surfaces (RIS) have attracted a lot of attention due to their capability of extending cell coverage by reflecting signals…”
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Active RIS Versus Passive RIS: Which is Superior With the Same Power Budget? by Zhi, Kangda, Pan, Cunhua, Ren, Hong, Chai, Kok Keong, Elkashlan, Maged

“…This letter theoretically compares the active reconfigurable intelligent surface (RIS)-aided system with the passive RIS-aided system. For a fair comparison,…”
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Placement Optimization of UAV-Mounted Mobile Base Stations by Lyu, Jiangbin, Zeng, Yong, Zhang, Rui, Lim, Teng Joon

“…In terrestrial communication networks without fixed infrastructure, unmanned aerial vehicle-mounted mobile base stations (MBSs) provide an efficient solution…”
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Intelligent Reflecting Surface-Assisted Multiple Access With User Pairing: NOMA or OMA? by Zheng, Beixiong, Wu, Qingqing, Zhang, Rui

“…The integration of intelligent reflecting surface (IRS) to multiple access networks is a cost-effective solution for boosting spectrum/energy efficiency and…”
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Efficient Deployment of Multiple Unmanned Aerial Vehicles for Optimal Wireless Coverage by Mozaffari, Mohammad, Saad, Walid, Bennis, Mehdi, Debbah, Merouane

“…In this letter, the efficient deployment of multiple unmanned aerial vehicles (UAVs) acting as wireless base stations that provide coverage for ground users is…”
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Deep Learning-Based Channel Estimation by Soltani, Mehran, Pourahmadi, Vahid, Mirzaei, Ali, Sheikhzadeh, Hamid

“…In this letter, we present a deep learning algorithm for channel estimation in communication systems. We consider the time-frequency response of a fast fading…”
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Coverage Characterization of STAR-RIS Networks: NOMA and OMA by Wu, Chenyu, Liu, Yuanwei, Mu, Xidong, Gu, Xuemai, Dobre, Octavia A.

“…The novel concept of simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) is investigated, where incident signals can be…”
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Cooperative Non-Orthogonal Multiple Access in 5G Systems by Zhiguo Ding, Mugen Peng, Poor, H. Vincent

“…Non-orthogonal multiple access (NOMA) has received considerable recent attention as a promising candidate for 5G systems. A key feature of NOMA is that users…”
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Practical Non-Linear Energy Harvesting Model and Resource Allocation for SWIPT Systems by Boshkovska, Elena, Ng, Derrick Wing Kwan, Zlatanov, Nikola, Schober, Robert

“…In this letter, we propose a practical non-linear energy harvesting model and design a resource allocation algorithm for simultaneous wireless information and…”
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Sum Rate Maximization for IRS-Assisted Uplink NOMA by Zeng, Ming, Li, Xingwang, Li, Gen, Hao, Wanming, Dobre, Octavia A.

“…An intelligent reflecting surface (IRS) consists of a large number of low-cost reflecting elements, which can steer the incident signal collaboratively by…”
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Joint Trajectory and Power Optimization for UAV Relay Networks by Zhang, Shuhang, Zhang, Hongliang, He, Qichen, Bian, Kaigui, Song, Lingyang

“…In this letter, we consider an unmanned aerial vehicle (UAV) relay network, where the UAV works as an amplify-and-forward relay. We optimize the trajectory of…”
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Impact of LoRa Imperfect Orthogonality: Analysis of Link-Level Performance by Croce, Daniele, Gucciardo, Michele, Mangione, Stefano, Santaromita, Giuseppe, Tinnirello, Ilenia

“…In this letter, we focus on the evaluation of link-level performance of LoRa technology, in the usual network scenario with a central gateway and high-density…”
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Low complexity LMMSE Receiver for OTFS by Tiwari, Shashank, Das, Suvra Sekhar, Rangamgari, Vivek

“…Orthogonal time frequency space modulation is a two dimensional (2D) delay-Doppler domain waveform. It uses inverse symplectic Fourier transform (ISFFT) to…”
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Performance Analysis of Intelligent Reflecting Surface Aided Communication Systems by Tao, Qin, Wang, Junwei, Zhong, Caijun

“…This letter presents a detailed performance analysis of the intelligent reflecting surface (IRS) aided single-input single-output communication systems, taking…”
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Optimum Placement of UAV as Relays by Chen, Yunfei, Feng, Wei, Zheng, Gan

“…Unmanned aerial vehicles (UAVs) as aerial base stations or relays are becoming increasingly important in communications. In this letter, the optimum placement…”
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Unveiling the Importance of SIC in NOMA Systems-Part 1: State of the Art and Recent Findings by Ding, Zhiguo, Schober, Robert, Poor, H. Vincent

“…The key idea of non-orthogonal multiple access (NOMA) is to serve multiple users simultaneously at the same time and frequency, which can result in excessive…”
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