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This paper considers a reconfigurable intelligent surface (RIS)-aided millimeter wave (mmWave) downlink communication system where hybrid analog-digital beamforming is employed at the base station (BS). We formulate a power minimization…

信息论 · 计算机科学 2022-02-15 Renwang Li , Bei Guo , Meixia Tao , Ya-Feng Liu , Wei Yu

Both the use of very large arrays of antennas and flexible time division duplexing (TDD) designs have become prominent features of next generation 5G cellular systems. However, both enabling technologies suffer from severe interference…

信息论 · 计算机科学 2018-03-12 David M. Gutierrez-Estevez

In millimeter-wave communications, multiple-input-multiple-output (MIMO) systems use large antenna arrays to achieve high gain and spectral efficiency. These massive MIMO systems employ hybrid beamformers to reduce power consumption…

信号处理 · 电气工程与系统科学 2019-11-26 Ahmet M. Elbir , Kumar Vijay Mishra

Wireless networks employing small cells like femtocells are considered to be the choice of network deployment for 4G or advanced networks. This hierarchical deployment of cells introduces the necessity of effective frequency planning for…

网络与互联网体系结构 · 计算机科学 2018-10-08 Md. Tashikur Rahman , Md. Didarul Alam , Mostafa Zaman Chowdhury

Massive multiple-input multiple-output (mMIMO) antenna systems and inter-band carrier aggregation (CA)-enabled multi-band communication are two key technologies to achieve very high data rates in beyond fifth generation (B5G) wireless…

网络与互联网体系结构 · 计算机科学 2024-07-31 Nuwan Balasuriya , Amine Mezghani , Ekram Hossain

Millimeter wave (mmWave) communication by utilizing lens antenna arrays is a promising technique for realizing cost-effective 5G wireless systems with large MIMO (multiple-input multiple-output) but only limited radio frequency (RF) chains.…

信息论 · 计算机科学 2016-11-21 Yong Zeng , Lu Yang , Rui Zhang

This work presents joint interference suppression and power allocation algorithms for DS-CDMA networks with multiple hops and decode-and-forward (DF) protocols. A scheme for joint allocation of power levels across the relays subject to…

信息论 · 计算机科学 2013-04-09 Rodrigo C. de Lamare

Of the wide palette of 5G features, ultra-wide bandwidth and large-scale antenna configuration are regarded as the essential enabling technology components at millimeter wave (mmWave) communication. Accurate knowledge of delay and angle…

信号处理 · 电气工程与系统科学 2019-01-31 Fengchun Zhang , Wei Fan

Beamforming enhances signal strength and quality by focusing energy in specific directions. This capability is particularly crucial in cell-free integrated sensing and communication (ISAC) systems, where multiple distributed access points…

新兴技术 · 计算机科学 2026-01-21 Jiexin Zhang , Shu Xu , Chunguo Li , Yongming Huang , Luxi Yang

The work presented in this paper deals with the issue of massive demands for higher capacity. For that matter, we investigate the spectrum resource management in outdoor mmWave cell for the uplink of cellular and D2D communications. Indeed,…

网络与互联网体系结构 · 计算机科学 2016-05-20 Zeineb Guizani , Noureddine Hamdi

Integrating quantum key distribution (QKD) with existing optical networks is highly desired to reduce the deployment costs and achieve efficient resource utilization, and some pointtopoint transmitting experiments have verified its…

量子物理 · 物理学 2020-01-08 Jianing Niu , Yongmei Sun , Yongrui Zhang , Yuefeng Ji

While numerous experimental studies have demonstrated the feasibility of reconfigurable intelligent surface (RIS) technology, most have primarily focused on extending coverage. In contrast, this paper presents an experimental evaluation of…

信息论 · 计算机科学 2025-05-22 Feng-Ji Chen , Chao-Kai Wen , De-Ming Chian

This study explores the application of the rate-splitting multiple access (RSMA) technique, vital for interference mitigation in modern communication systems. It investigates the use of precoding methods in RSMA, especially in complex…

信息论 · 计算机科学 2024-12-20 Osman Nuri Irkicatal , Elif Tugce Ceran , Melda Yuksel

Mobile edge computing (MEC) and millimeter wave (mmWave) communications are capable of significantly reducing the network's delay and enhancing its capacity. In this paper we investigate a mmWave and device-to-device (D2D) assisted MEC…

信号处理 · 电气工程与系统科学 2022-07-19 Yanzhen Liu , Yunlong Cai , An Liu , Minjian Zhao , Lajos Hanzo

The sixth generation (6G) industrial Sub-networks (SNs) face several challenges in meeting extreme latency and reliability requirements in the order of 0.1-1 ms and 99.999 -to-99.99999 percentile, respectively. Interference management (IM)…

Fifth generation (5G) and beyond communication systems open the door to millimeter Wave (mmWave) frequency bands to leverage the extremely large operating bandwidths and deliver unprecedented network capacity. These frequency bands are…

网络与互联网体系结构 · 计算机科学 2022-02-25 Roberto Flamini , Danilo De Donno , Jonathan Gambini , Francesco Giuppi , Christian Mazzucco , Angelo Milani , Laura Resteghini

Recent works on MIMO interference channels have shown that interference alignment can significantly increase the achievable degrees of freedom (DoF) of the network. However, most of these works have assumed a fully connected interference…

信息论 · 计算机科学 2016-08-24 Liangzhong Ruan , Vincent K. N. Lau

In this paper, we investigate a movable antenna (MA) enabled anti-jamming optimization problem, where a legitimate uplink system is exposed to multiple jammers with unknown jamming channels. To enhance the anti-jamming capability of the…

信号处理 · 电气工程与系统科学 2025-12-24 Lebin Chen , Ming-Min Zhao , Qingqing Wu , Min-Jian Zhao , Rui Zhang

Dynamic metasurface antennas (DMAs), surfaces patterned with reconfigurable metamaterial elements (meta-atoms) that couple waves from waveguides or cavities to free space, are a promising technology to realize 6G wireless base stations and…

信号处理 · 电气工程与系统科学 2024-12-03 Hugo Prod'homme , Philipp del Hougne

This letter develops a novel transmit beamforming (BF) design for canceling self-interference (SI) in analog in-band full-duplex phased arrays. Our design maximizes transmit BF gain in a desired direction while simultaneously reducing SI…

信号处理 · 电气工程与系统科学 2024-01-26 Ao Liu , Ian P. Roberts , Taneli Riihonen , Weixing Sheng