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In mmWave massive multiple-input multiple-output (mMIMO) systems, hybrid digital/analog beamforming has been recognized as an economic means to overcome the severe mmWave propagation loss. To facilitate beamforming for mmWace mMIMO, there…

Signal Processing · Electrical Eng. & Systems 2019-12-19 Shijian Gao , Xiang Cheng , Liuqing Yang

Codebook-based beam selection is one approach for configuring millimeter wave communication links. The overhead required to reconfigure the transmit and receive beam pair, though, increases in highly dynamic vehicular communication systems.…

Signal Processing · Electrical Eng. & Systems 2024-04-18 Ibrahim Kilinc , Ryan M. Dreifuerst , Junghoon Kim , Robert W. Heath

This paper investigates a novel research direction that leverages vision to help overcome the critical wireless communication challenges. In particular, this paper considers millimeter wave (mmWave) communication systems, which are…

Information Theory · Computer Science 2019-11-18 Muhammad Alrabeiah , Andrew Hredzak , Ahmed Alkhateeb

Beam management is a challenging task for millimeter wave (mmWave) and sub-terahertz communication systems, especially in scenarios with highly-mobile users. Leveraging external sensing modalities such as vision, LiDAR, radar, position, or…

Signal Processing · Electrical Eng. & Systems 2022-10-14 Gouranga Charan , Umut Demirhan , João Morais , Arash Behboodi , Hamed Pezeshki , Ahmed Alkhateeb

The combination of millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems and index modulation (IM) technique has recently constituted a novel form of mmWave hybrid beamforming. Lots of studies have been conducted to show…

Information Theory · Computer Science 2020-01-08 Jintao Wang , Longzhuang He , Jian Song

Supporting high mobility in millimeter wave (mmWave) systems enables a wide range of important applications such as vehicular communications and wireless virtual/augmented reality. Realizing this in practice, though, requires overcoming…

Information Theory · Computer Science 2019-02-25 Ahmed Alkhateeb , Sam Alex , Paul Varkey , Ying Li , Qi Qu , Djordje Tujkovic

With millimeter wave (mmWave) wireless communication envisioned to be the key enabler of next generation high data rate wireless networks, security is of paramount importance. While conventional security measures in wireless networks…

Cryptography and Security · Computer Science 2019-02-12 Sarankumar Balakrishnan , Shreya Gupta , Arupjyoti Bhuyan , Pu Wang , Dimitrios Koutsonikolas , Zhi Sun

Establishing and maintaining millimeter-wave (mmWave) links is challenging due to the changing environment and the high sensibility of mmWave signal to user mobility and channel conditions. MmWave link configuration problems often involve a…

Signal Processing · Electrical Eng. & Systems 2022-02-03 Yi Zhang , Robert W. Heath

In order to cope with the severe path loss, millimeter-wave (mm-wave) systems exploit highly directional communication. As a consequence, even a slight beam misalignment between two communicating devices (for example, due to mobility) can…

Networking and Internet Architecture · Computer Science 2016-12-26 Joan Palacios , Danilo De Donno , Joerg Widmer

In millimeter wave communications, beam training is an effective way to achieve beam alignment. Traditional beam training method allocates training resources equally to each beam in the pre-designed beam training codebook. The performance…

Information Theory · Computer Science 2018-10-25 Zihan Tang , Jun Wang , Jintao Wang , Jian Song

Millimeter Wave (mmWave) band provides a large spectrum to meet the high-demand capacity by the 5th generation (5G) wireless networks. However, to fully exploit the available spectrum, obstacles such as high path loss, channel sparsity, and…

Information Theory · Computer Science 2018-07-16 Mojtaba Ahmadi Almasi , Roohollah Amiri , Hani Mehrpouyan

Millimeter-wave (mmWave) communications have gained attention as a key technology for high-capacity wireless systems, owing to the wide available bandwidth. However, mmWave signals suffer from their inherent characteristics such as severe…

Signal Processing · Electrical Eng. & Systems 2026-03-03 Hanyoung Park , Ji-Woong Choi

Millimeter-wave (mmWave) positioning has emerged as a promising technology for next-generation intelligent systems. The advent of reconfigurable intelligent surfaces (RISs) has revolutionized high-precision mmWave localization by enabling…

Signal Processing · Electrical Eng. & Systems 2026-04-23 Xin Cheng , Yuqing Yang , Guangjie Han , Menglu Li , Ruoguang Li , Feng Shu

Base station (BS) placement in mobile networks is critical to the efficient use of resources in any communication system and one of the main factors that determines the quality of communication. Although there is ample literature on the…

Signal Processing · Electrical Eng. & Systems 2020-03-10 Fatih Erden , Chethan K. Anjinappa , Ender Ozturk , Ismail Guvenc

User-centric (UC) based cell-free (CF) structures can provide the benefits of coverage enhancement for millimeter wave (mmWave) multiple input multiple output (MIMO) systems, which is regarded as the key technology of the reliable and…

Information Theory · Computer Science 2022-05-10 Yingrong Zhong , Yashuai Cao , Tiejun Lv

Simultaneous use of high-end wearable wireless devices like smart glasses is challenging in a dense indoor environment due to the high nature of interference. In this scenario, the millimeter wave (mmWave) band offers promising potential…

Information Theory · Computer Science 2016-06-14 Kiran Venugopal , Robert W. Heath

Millimeter-wave (mmWave) communication enables high data rates for cellular-connected Unmanned Aerial Vehicles (UAVs). However, a robust beam management remains challenging due to significant path loss and the dynamic mobility of UAVs,…

Signal Processing · Electrical Eng. & Systems 2025-07-15 Vendi Ardianto Nugroho , Byung Moo Lee

The problem of beam alignment and tracking in high mobility scenarios such as high-speed railway (HSR) becomes extremely challenging, since large overhead cost and significant time delay are introduced for fast time-varying channel…

Information Theory · Computer Science 2022-07-01 Fan Meng , Shengheng Liu , Yongming Huang , Zhaohua Lu

The millimeter wave (mmWave) bands have attracted considerable attention for high precision localization applications due to the ability to capture high angular and temporal resolution measurements. This paper explores mmWave-based…

Millimeter-wave (mmWave) and terahertz (THz) communication systems typically deploy large antenna arrays to guarantee sufficient receive signal power. The beam training overhead associated with these arrays, however, make it hard for these…

Signal Processing · Electrical Eng. & Systems 2022-05-25 Gouranga Charan , Andrew Hredzak , Christian Stoddard , Benjamin Berrey , Madhav Seth , Hector Nunez , Ahmed Alkhateeb