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The highway vehicular ad hoc networks, where vehicles are wirelessly inter-connected, rely on the multi-hop transmissions for end-to-end communications. This, however, is severely challenged by the unreliable wireless connections, signal…

网络与互联网体系结构 · 计算机科学 2018-07-09 Changle Li , Yao Zhang , Tom H. Luan , Yuchuan Fu

We consider a wireless distributed computing system, in which multiple mobile users, connected wirelessly through an access point, collaborate to perform a computation task. In particular, users communicate with each other via the access…

信息论 · 计算机科学 2017-05-09 Songze Li , Qian Yu , Mohammad Ali Maddah-Ali , A. Salman Avestimehr

An energy-efficient opportunistic collaborative beamformer with one-bit feedback is proposed for ad hoc sensor networks over Rayleigh fading channels. In contrast to conventional collaborative beamforming schemes in which each source node…

信息论 · 计算机科学 2016-11-15 Man-On Pun , D. Richard Brown , H. Vincent Poor

In this paper we consider random access wireless multi-hop mesh networks with multi-packet reception capabilities where multiple flows are forwarded to the gateways through node disjoint paths. We address the issue of aggregate…

网络与互联网体系结构 · 计算机科学 2016-11-15 Manolis Ploumidis , Nikolaos Pappas , Apostolos Traganitis

This paper presents a distributed algorithm on wireless ad-hoc networks that runs in polylogarithmic number of rounds in the size of the network and constructs a linear size, lightweight, (1+\epsilon)-spanner for any given \epsilon > 0. A…

数据结构与算法 · 计算机科学 2008-03-17 Mirela Damian , Saurav Pandit , Sriram Pemmaraju

This article studies an essential yet challenging problem in 5G wireless networks: \emph{Is it possible to enable spectrally-efficient spectrum sharing for heterogeneous wireless networks with different, possibly incompatible, spectrum…

网络与互联网体系结构 · 计算机科学 2020-02-18 Lorenzo Bertizzolo , Emrecan Demirors , Zhangyu Guan , Tommaso Melodia

This paper deals with distributed beamforming techniques for wireless networks with half-duplex amplify-and-forward relays. Existing schemes optimize the beamforming weights based on the assumption that channel state information (CSI) is…

信息论 · 计算机科学 2016-11-18 Peter Fertl , Ari Hottinen , Gerald Matz

Although Terahertz communication systems can provide high data rates, it needs high directional beamforming at transmitters and receivers to achieve such rates over a long distance. Therefore, an efficient beam training method is vital to…

信息论 · 计算机科学 2022-01-03 Songjie Yang , Zhongpei Zhang , Zhenzhen Hu , Nuan Song , Hao Liu

While highly directional communications may offer considerable improvements in the link data rate and over-the-air latency of high-end wearable devices, the system-level capacity trade-offs call for separate studies with respect to the…

网络与互联网体系结构 · 计算机科学 2021-04-13 Asad Ali , Olga Galinina , Sergey Andreev

Most of geographic routing approaches in wireless ad hoc and sensor networks do not take into consideration the medium access control (MAC) and physical layers when designing a routing protocol. In this paper, we focus on a cross-layer…

网络与互联网体系结构 · 计算机科学 2012-06-06 Teck Aguilar , Mohamed Chedly Ghedira , Syue-Ju Syue , Vincent Gauthier , Hossam Afifi , Chin-Liang Wang

Unlike wired networks, the capacity of a wireless network is interference limited due to the broadcast nature of wireless medium. Some multicast wireless network protocols do not consider channel assignment issue, that they cause…

网络与互联网体系结构 · 计算机科学 2012-10-12 Abbas Nargesi , Mehdi Ghasemi

Starting from first principles of wave propagation, we consider a multiple-input multiple-output (MIMO) representation of a communication system between two spatially-continuous volumes. This is the concept of holographic MIMO…

信号处理 · 电气工程与系统科学 2022-09-30 Luca Sanguinetti , Antonio A. D'Amico , Merouane Debbah

Large language models (LLMs) have demonstrated remarkable success across various application domains, but their enormous sizes and computational demands pose significant challenges for deployment on resource-constrained edge devices. To…

分布式、并行与集群计算 · 计算机科学 2025-03-20 Kai Zhang , Hengtao He , Shenghui Song , Jun Zhang , Khaled B. Letaief

We consider a wireless ad hoc network in the presence of eavesdroppers (EDs), where the nodes are distributed according to independent Poisson point processes (PPPs). The legitimate nodes follow the half-duplex mode of operation employing…

信息论 · 计算机科学 2019-05-07 B. N. Bharath , K. G. Nagananda

This paper studies a novel user cooperation method in a wireless powered cooperative communication network (WPCN) in which a pair of distributed terminal users first harvest wireless energy broadcasted by one energy node (EN) and then use…

信息论 · 计算机科学 2016-10-31 Mingquan Zhong , Suzhi Bi , Xiaohui Lin

This two-part paper presents a feedback-based cross-layer framework for distributed sensing and estimation of a dynamic process by a wireless sensor network (WSN). Sensor nodes wirelessly communicate measurements to the fusion center (FC).…

系统与控制 · 计算机科学 2015-06-23 Nicolo Michelusi , Urbashi Mitra

Distributed opportunistic scheduling (DOS) protocols are proposed for multiple-input multiple-output (MIMO) ad-hoc networks with contention-based medium access. The proposed scheduling protocols distinguish themselves from other existing…

信息论 · 计算机科学 2016-11-17 Man-On Pun , Weiyan Ge , Dong Zheng , Junshan Zhang , H. Vincent Poor

It is widely perceived that leveraging the success of modern machine learning techniques to mobile devices and wireless networks has the potential of enabling important new services. This, however, poses significant challenges, essentially…

机器学习 · 计算机科学 2023-04-13 Matei Moldoveanu , Abdellatif Zaidi

In this paper, we propose a cross-layer scheduling algorithm that achieves a throughput "epsilon-close" to the optimal throughput in multi-hop wireless networks with a tradeoff of O(1/epsilon) in delay guarantees. The algorithm aims to…

信息论 · 计算机科学 2011-01-26 Dongyue Xue , Eylem Ekici

Phase, frequency, and time synchronization are crucial requirements for many applications, such as multi-static remote sensing and communication systems. Moreover, the synchronization solution becomes even more challenging when the nodes…

信号处理 · 电气工程与系统科学 2020-11-23 Juan Merlano Duncan , Liz Martinez-Marrero , Jorge Querol , Sumit Kumar , Adriano Camps , Symeon Chatzinotas , Bjorn Ottersten