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Millimeter wave (mmWave) is an attractive candidate for high-speed mobile communications in the future. However, due to the propagation characteristics of mmWave, beam and and and and alignment becomes a key challenge for serving users with…

Information Theory · Computer Science 2019-07-03 Yu Liu , Jiahui Li , Yin Sun , Shidong Zhou

In this paper, adaptive training beam sequence design for efficient channel estimation in large millimeter-wave(mmWave) multiple-input multiple-output (MIMO) channels is considered. By exploiting the sparsity in large mmWave MIMO channels…

Information Theory · Computer Science 2014-10-15 Junyeong Seo , Youngchul Sung , Gilwon Lee , Donggun Kim

Position-aided beam selection methods have been shown to be an effective approach to achieve high beamforming gain while limiting the overhead and latency of initial access in millimeter wave (mmWave) communications. Most research in the…

Signal Processing · Electrical Eng. & Systems 2021-10-14 Sajad Rezaie , Elisabeth de Carvalho , Carles Navarro Manchón

Efficient link configuration in millimeter wave (mmWave) communication systems is a crucial yet challenging task due to the overhead imposed by beam selection. For vehicle-to-infrastructure (V2I) networks, side information from LIDAR…

Information Theory · Computer Science 2021-07-27 Mahdi Boloursaz Mashhadi , Mikolaj Jankowski , Tze-Yang Tung , Szymon Kobus , Deniz Gunduz

Millimeter Wave (mmWave) communications rely on highly directional beams to combat severe propagation loss. In this paper, an adaptive beam search algorithm based on spatial scanning, called Iterative Deactivation and Beam Shifting (IDBS),…

Information Theory · Computer Science 2020-05-05 Chunshan Liu , Min Li , Lou Zhao , Philip Whiting , Stephen V. Hanly , Iain B. Collings

Compared to the current wireless communication systems, millimeter wave (mm-Wave) promises a wide range of spectrum. As viable alternatives to existing mm-Wave channel models, various map-based channel models with different modeling methods…

Information Theory · Computer Science 2019-07-11 Yeon-Geun Lim , Yae Jee Cho , MinSoo Sim , Younsun Kim , Chan-Byoung Chae , Reinaldo A. Valenzuela

High-content screening microscopy generates large amounts of live-cell imaging data, yet its potential remains constrained by the inability to determine when and where to image most effectively. Optimally balancing acquisition time,…

Applications · Statistics 2025-12-18 Jaume Anguera Peris , Songtao Cheng , Hanzhao Zhang , Wei Ouyang , Joakim Jaldén

Controlling antenna tilts in cellular networks is imperative to reach an efficient trade-off between network coverage and capacity. In this paper, we devise algorithms learning optimal tilt control policies from existing data (in the…

Machine Learning · Computer Science 2022-01-07 Filippo Vannella , Alexandre Proutiere , Yassir Jedra , Jaeseong Jeong

MmWave communications aim to meet the demand for higher data rates by using highly directional beams with access to larger bandwidth. An inherent challenge is acquiring channel state information (CSI) necessary for mmWave transmission. We…

Signal Processing · Electrical Eng. & Systems 2020-01-01 Nancy Ronquillo , Sung-En Chiu , Tara Javidi

Access points (APs) in millimeter-wave (mmWave) and sub-THz-based user-centric (UC) networks will have sleep mode functionality. As a result of this, it becomes challenging to solve the initial access (IA) problem when the sleeping APs are…

Signal Processing · Electrical Eng. & Systems 2021-10-20 Insaf Ismath , Samad Ali , Nandana Rajatheva , Matti Latva-aho

Human blockage is one of the main challenges for mmWave communication networks in dynamic environments. The shadowing by a human body results in significant received power degradation and could occur abruptly and frequently. A shadowing…

Signal Processing · Electrical Eng. & Systems 2022-08-16 Rizqi Hersyandika , Yang Miao , Sofie Pollin

Millimeter wave (mmWave) communication is a key component of 5G and beyond. Harvesting the gains of the large bandwidth and low latency at mmWave systems, however, is challenged by the sensitivity of mmWave signals to blockages; a sudden…

Machine Learning · Computer Science 2021-02-09 Shunyao Wu , Muhammad Alrabeiah , Andrew Hredzak , Chaitali Chakrabarti , Ahmed Alkhateeb

Millimeter wave (mmWave) has been claimed to be the only viable solution for high-bandwidth vehicular communications. However, frequent channel estimation and beamforming required to provide a satisfactory quality of service limits mmWave…

Signal Processing · Electrical Eng. & Systems 2019-09-26 Sina Shaham , Ming Ding , Matthew Kokshoorn , Zihuai Lin , Shuping Dang , Rana Abbas

In this paper, we propose an efficient beam tracking method for mobility scenario in mmWave-band communications. When the position of the mobile changes in mobility scenario, the base-station needs to perform beam training frequently to…

Information Theory · Computer Science 2017-02-02 Jisu Bae , Sun Hong Lim , Jin Hyeok Yoo , Jun Won Choi

This paper is concerned with the channel estimation problem in multi-cell Millimeter (mmWave) wireless systems. We develop a novel Ray-of-Arrival Passing for Indirect (RAPID) Beam Training framework, in which a network consisting of…

Information Theory · Computer Science 2018-05-01 Matthew Kokshoorn , He Chen , Yonghui Li , Branka Vucetic

The fundamental challenge of the millimeter-wave (mmWave) frequency band is the sensitivity of the radio channel to blockages, which gives rise to unstable connectivity and impacts the reliability of a system. To this end, multi-point…

Signal Processing · Electrical Eng. & Systems 2021-02-16 Dileep Kumar , Jarkko Kaleva , Antti Tölli

Multi-Armed Bandit (MAB) systems are witnessing an upswing in applications within multi-agent distributed environments, leading to the advancement of collaborative MAB algorithms. In such settings, communication between agents executing…

Machine Learning · Computer Science 2024-04-30 Osama A. Hanna , Merve Karakas , Lin F. Yang , Christina Fragouli

The sensitivity of millimeter wave (mmWave) signals to blockages is a fundamental challenge for mobile mmWave communication systems. The sudden blockage of the line-of-sight (LOS) link between the base station and the mobile user normally…

Information Theory · Computer Science 2018-07-11 Ahmed Alkhateeb , Iz Beltagy

Communication at millimeter wave (mmWave) bands is expected to become a key ingredient of next generation (5G) wireless networks. Effective mmWave communications require fast and reliable methods for beamforming at both the User Equipment…

Information Theory · Computer Science 2018-06-19 Xiaoshen Song , Saeid Haghighatshoar , Giuseppe Caire

Millimeter wave (mmWave) communication is expected to play an important role in next generation cellular networks, aiming to cope with the bandwidth shortage affecting conventional wireless carriers. Using side-information has been proposed…

Signal Processing · Electrical Eng. & Systems 2017-11-09 Flavio Maschietti , David Gesbert , Paul de Kerret
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