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Advancements in 6G wireless technology have elevated the importance of beamforming, especially for attaining ultra-high data rates via millimeter-wave (mmWave) frequency deployment. Although promising, mmWave bands require substantial beam…

网络与互联网体系结构 · 计算机科学 2024-07-31 Avi Deb Raha , Kitae Kim , Apurba Adhikary , Mrityunjoy Gain , Zhu Han , Choong Seon Hong

In the fifth-generation and beyond era, reconfigurable intelligent surface (RIS) and dynamic metasurface antennas (DMAs) are emerging metamaterials keeping up with the demand for high-quality wireless communication services, which promote…

信息论 · 计算机科学 2022-09-07 Hanyu Jiang , Li You , Jue Wang , Wenjin Wang , Xiqi Gao

The pinching-antenna system (PASS) reconfigures wireless links through pinching beamforming, in which the activated locations of pinching antennas (PAs) along dielectric waveguides are optimized. This article investigates the application of…

信号处理 · 电气工程与系统科学 2025-06-03 Shan Shan , Chongjun Ouyang , Yong Li , Yuanwei Liu

Multiple input multiple output techniques are considered attractive for future wireless communication systems, due to the continuing demand for high data rates, spectral efficiency, suppress interference ability and robustness of…

信息论 · 计算机科学 2014-10-27 Nidhi Sindhwani , Manjit Singh

Ensuring adequate wireless coverage in upcoming communication technologies such as 6G is expected to be challenging. This is because user demands of higher datarate require an increase in carrier frequencies, which in turn reduce the…

信号处理 · 电气工程与系统科学 2024-09-27 Sai Sanjay Narayanan , Uday K Khankhoje , Radha Krishna Ganti

Microstrip-like antenna (MLA) which was developed nearly a decade ago, is a powerful radiating element. The primary challenge in designing a MLA is to provide an optimized matching network such that the overall input reflection is kept as…

最优化与控制 · 数学 2015-09-04 Jalil Rasekhi , Jalil Rashed Mohasel

Distributed phased arrays have recently garnered interest in applications such as satellite communications and high-resolution remote sensing. High-performance coherent distributed operations such as distributed beamforming are dependent on…

信号处理 · 电气工程与系统科学 2024-11-19 Matthew J. Dula , Naim Shandi , Jeffrey A. Nanzer

In this letter, we propose to deploy rotatable antennas (RAs) at the base station (BS) to enhance both communication and sensing (C&S) performances, by exploiting a new spatial degree-of-freedom (DoF) offered by array rotation.…

信号处理 · 电气工程与系统科学 2025-03-14 Chao Zhou , Changsheng You , Beixiong Zheng , Xiaodan Shao , Rui Zhang

Multi-Radio Multi-Channel Wireless Mesh Networks (WMNs) have emerged as a scalable, reliable, and agile wireless network that supports many types of innovative technologies such as the Internet of Things (IoT) and vehicular networks. Due to…

网络与互联网体系结构 · 计算机科学 2021-09-16 Fuad A. Ghaleb , Bander Ali Saleh Al-rimy , Maznah Kamat , Mohd. Foad Rohani , Shukor Abd Razak

Traditional stereo matching algorithms like Semi-Global Block Matching (SGBM) with Weighted Least Squares (WLS) filtering offer speed advantages over neural networks for UAV applications, generating disparity maps in approximately 0.5…

计算机视觉与模式识别 · 计算机科学 2025-12-08 Yida Lin , Bing Xue , Mengjie Zhang , Sam Schofield , Richard Green

The utilization of universal frequency reuse in multi-beam satellite systems introduces a non-negligible level of co-channel interference (CCI), which in turn penalizes the quality of service experienced by users. Taking this as starting…

信息论 · 计算机科学 2016-11-15 Vincent Boussemart , Loris Marini , Matteo Berioli

A novel multiuser communication system with movable antennas (MAs) is proposed, where the antenna position optimization is exploited to enhance the downlink sum-rate. The joint optimization of the transmit beamforming vector and transmit MA…

信号处理 · 电气工程与系统科学 2023-09-26 Zhenqiao Cheng , Nanxi Li , Jianchi Zhu , Chongjun Ouyang

This paper investigates the uplink covert communication in a multiple-input multiple-output (MIMO) satellite-terrestrial system consisting of an Earth station transmitter Alice, a geosynchronous Earth orbit (GEO) satellite receiver Bob, and…

信息论 · 计算机科学 2026-02-20 Zewei Guo , Ranran Sun , Yulong Shen , Xiaohong Jiang

In this paper, we design a new smart software-defined radio access network architecture which is flexible and traffic and density aware for the fifth generation (5G) of cellular wireless networks and beyond. The proposed architecture, based…

信息论 · 计算机科学 2021-06-29 Mohammad Moltafet , Sepehr Rezvani , Nader Mokari , Mohammad R. Javan , Eduard A. Jorswieck

3D beamforming is a promising approach for interference coordination in cellular networks which brings significant improvements in comparison with conventional 2D beamforming techniques. This paper investigates the problem of joint…

信息论 · 计算机科学 2017-01-16 Soheil Khavari Moghaddam , S. Mohammad Razavizadeh

This paper studies energy-efficient coordinated beamforming in multi-cell multi-user multigroup multicast multiple-input single-output systems. We aim at maximizing the network energy efficiency by taking into account the fact that some of…

信息论 · 计算机科学 2017-07-06 Oskari Tervo , Le-Nam Tran , Harri Pennanen , Symeon Chatzinotas , Markku Juntti , Björn Ottersten

In this paper, we consider the downlink (DL) of a zero-forcing (ZF) precoded extra-large scale massive MIMO (XL-MIMO) system. The base-station (BS) operates with limited number of radio-frequency (RF) transceivers due to high cost, power…

Cognitive radio (CR) is to detect the presence of primary users (PUs) reliably in order to reduce the interference to licensed communications. Genetic algorithms (GAs) are well suited for CR optimization problems to increase efficiency of…

网络与互联网体系结构 · 计算机科学 2013-04-12 Md. Kamal Hossain , Ayman Abd El-Saleh

The everlasting bandwidth limitations in wireless communication networks has directed the researchers' thrust toward analyzing the prospect of overloaded Code Division Multiple Access (CDMA). In this paper, we have proposed a Genetic…

信息论 · 计算机科学 2010-12-10 M. Heidari Khoozani , A. Rashidinejad , M. H. Lotfi Froushani , P. Pad , F. Marvasti

The growing adoption of mmWave frequency bands to realize the full potential of 5G, turns beamforming into a key enabler for current and next-generation wireless technologies. Many mmWave networks rely on beam selection with Grid-of-Beams…

信号处理 · 电气工程与系统科学 2023-02-02 Ycaro Dantas , Pedro Enrique Iturria-Rivera , Hao Zhou , Majid Bavand , Medhat Elsayed , Raimundas Gaigalas , Melike Erol-Kantarci