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The task of Multiple Sequence Alignment (MSA) is a constrained combinatorial optimization problem that is generally considered a complex computational problem. In this paper, we first present a binary encoding of MSA and devise a…

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

Millimeter-wave (mmWave) is a key enabler for next-generation transportation systems. However, in an urban city scenario, mmWave is highly susceptible to blockages and shadowing. Therefore, base station (BS) placement is a crucial task in…

Signal Processing · Electrical Eng. & Systems 2024-04-24 Ahmed Al-Tahmeesschi , Jukka Talvitie , Miguel López-Benítez , Hamed Ahmadi , Laura Ruotsalainen

In this paper we examine the use of matching theory for user association in millimeter wave (mmWave)-enabled cellular heterogeneous networks (HetNets). In a mmWave system, the channel variations can be fast and unpredictable, rendering…

Information Theory · Computer Science 2019-07-23 Alireza Alizadeh , Mai Vu

Energy efficient mobility management is an important problem in modern wireless networks with heterogeneous cell sizes and increased nodes densities. We show that optimization-based mobility protocols cannot achieve long-term optimal energy…

Networking and Internet Architecture · Computer Science 2016-08-30 Cong Shen , Cem Tekin , Mihaela van der Schaar

This paper considers a wireless link with randomly arriving data that is queued and served over a time-varying channel. It is known that any algorithm that comes within $\epsilon$ of the minimum average power required for queue stability…

Optimization and Control · Mathematics 2014-11-19 Michael J. Neely

CSMA (Carrier Sense Multiple Access), which resolves contentions over wireless networks in a fully distributed fashion, has recently gained a lot of attentions since it has been proved that appropriate control of CSMA parameters guarantees…

Networking and Internet Architecture · Computer Science 2015-01-16 Se-Young Yun , Jinwoo Shin , Yung Yi

With the development of wireless communication, people have put forward higher requirements for train-ground communications in the high-speed railway (HSR) scenarios. With the help of mobile relays (MRs) installed on the roof of the train,…

Information Theory · Computer Science 2023-08-22 Xiangfei Zhang , Yong Niu , Tao Yang , Xian Xiao , Jianwen Ding , Sheng Chen , Bo Ai , Zhangdui Zhong , Ning Wang

In this paper, the trajectory optimization problem for a multi-aerial base station (ABS) communication network is investigated. The objective is to find the trajectory of the ABSs so that the sum-rate of the users served by each ABS is…

Signal Processing · Electrical Eng. & Systems 2019-07-02 Behzad Khamidehi , Elvino S. Sousa

Quantum neural network (QNN) is one of the promising directions where the near-term noisy intermediate-scale quantum (NISQ) devices could find advantageous applications against classical resources. Recurrent neural networks are the most…

Quantum Annealing (QA) uses quantum fluctuations to search for a global minimum of an optimization-type problem faster than classical computers. To meet the demand for future internet traffic and mitigate the spectrum scarcity, this work…

Information Theory · Computer Science 2023-01-11 Eldar Gabdulsattarov , Khaled Rabie , Xingwang Li , Galymzhan Nauryzbayev

The emergence of large-scale wireless networks with partially-observable and time-varying dynamics has imposed new challenges on the design of optimal control policies. This paper studies efficient scheduling algorithms for wireless…

Networking and Internet Architecture · Computer Science 2023-08-08 Quang Minh Nguyen , Eytan Modiano

In IEEE 802.11, load balancing algorithms (LBA) consider only the associated stations to balance the load of the available access points (APs). However, although the APs are balanced, it causes a bad situation if the AP has a lower signal…

Performance · Computer Science 2009-08-31 Hamdi Salah , Soudani Adel , Tourki Rached

Enabling quantum switches (QSs) to serve requests submitted by quantum end nodes in quantum communication networks (QCNs) is a challenging problem due to the heterogeneous fidelity requirements of the submitted requests and the limited…

Networking and Internet Architecture · Computer Science 2023-05-23 Mahdi Chehimi , Bernd Simon , Walid Saad , Anja Klein , Don Towsley , Mérouane Debbah

Millimeter wave (mmWave) communications have been postulated as one of the most disruptive technologies for future 5G systems. Among mmWave bands the 60-GHz radio technology is specially suited for ultradense small cells and mobile data…

Networking and Internet Architecture · Computer Science 2016-05-19 Cristina Perfecto , Javier Del Ser , Muhammad Ikram Ashraf , Miren Nekane Bilbao , Mehdi Bennis

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

Owing to the ever-increasing demand in wireless spectrum, Cognitive Radio (CR) was introduced as a technique to attain high spectral efficiency. As the number of secondary users (SUs) connecting to the cognitive radio network is on the…

Information Theory · Computer Science 2020-04-10 Thulasi Tholeti , Vishnu Raj , Sheetal Kalyani

A novel framework is proposed for the trajectory design of multiple unmanned aerial vehicles (UAVs) based on the prediction of users' mobility information. The problem of joint trajectory design and power control is formulated for…

Signal Processing · Electrical Eng. & Systems 2019-06-05 Xiao Liu , Yuanwei Liu , Yue Chen , Lajos Hanzo

Since the spectrum below 6 GHz bands is insufficient to meet the high bandwidth requirements of 5G use cases, 5G networks expand their operation to mmWave bands. However, operation at these bands has to cope with a high penetration loss and…

Networking and Internet Architecture · Computer Science 2024-09-02 Lotte Weedage , Clara Stegehuis , Suzan Bayhan

The increasingly diversified Quality-of-Service (QoS) requirements envisioned for future wireless networks call for more flexible and inclusive multiple access techniques for supporting emerging applications and communication scenarios. To…

Information Theory · Computer Science 2021-08-25 Jie Mei , Wudan Han , Xianbin Wang , H. Vincent Poor