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By combining the features of CSMA and TDMA, fully decentralised WLAN MAC schemes have recently been proposed that converge to collision-free schedules. In this paper we describe a MAC with optimal long-run throughput that is almost…

Networking and Internet Architecture · Computer Science 2013-09-19 Minyu Fang , David Malone , Ken R. Duffy , Douglas J. Leith

We consider the resource allocation problem in cooperative wireless networks wherein nodes perform mutual information accumulation. We consider a unicast setting and arbitrary arrival processes at the source node. Source arrivals can be…

Information Theory · Computer Science 2011-08-17 Yanpei Liu , Jing Yang , Stark. C. Draper

Distributed contention based Medium Access Control (MAC) protocols are the fundamental components for IEEE 802.11 based Wireless Local Area Networks (WLANs). Contention windows (CW) change dynamically to adapt to the current contention…

Networking and Internet Architecture · Computer Science 2010-02-09 Ponnusamy Kumar , A. Krishnan

We consider the problem of rate allocation in a fading Gaussian multiple-access channel (MAC) with fixed transmission powers. Our goal is to maximize a general concave utility function of transmission rates over the throughput capacity…

Information Theory · Computer Science 2008-10-08 Ali ParandehGheibi , Atilla Eryilmaz , Asuman Ozdaglar , Muriel Medard

We study medium access in FMCW radar networks. We assume that all the radars use same parameters, e.g., chirp duration, chirp slope, cutoff frequency, number of chirps per packet, etc, and propose and analyze slotted ALOHA and CSMA…

Systems and Control · Electrical Eng. & Systems 2022-01-26 Haritha K , Vineeth Bala Sukumaran , Chandramani Singh

Joint communication and sensing (JCAS) networks are envisioned as a key enabler for a variety of applications which demand reliable wireless connectivity along with accurate and robust sensing capability. When sensing and communication…

Systems and Control · Electrical Eng. & Systems 2024-01-26 Navid Keshtiarast , Pradyumna Kumar Bishoyi , Marina Petrova

Energy consumption is a main issue of concern in wireless networks. Energy minimization increases the time that networks' nodes work properly without recharging or substituting batteries. Another criterion for network performance is data…

Information Theory · Computer Science 2010-12-13 Amirmahdi Khodaian , Babak H. Khalaj

This paper is a tutorial introduction to the field of unsourced multiple access (UMAC) protocols. We first provide a historical survey of the evolution of random access protocols, focusing specifically on the case in which uncoordinated…

Information Theory · Computer Science 2024-08-20 Gianluigi Liva , Yury Polyanskiy

We consider the problem of rate allocation in a Gaussian multiple-access channel, with the goal of maximizing a utility function over transmission rates. In contrast to the literature which focuses on linear utility functions, we study…

Information Theory · Computer Science 2008-10-08 Ali ParandehGheibi , Atilla Eryilmaz , Asuman Ozdaglar , Muriel Medard

This paper investigates practical 5G strategies for power-balanced non-orthogonal multiple access (NOMA). By allowing multiple users to share the same time and frequency, NOMA can scale up the number of served users and increase spectral…

Information Theory · Computer Science 2017-01-25 Haoyuan Pan , Lu Lu , Soung Chang Liew

This paper examines the impact of system parameters such as access point density and bandwidth partitioning on the performance of randomly deployed, interference-limited, dense wireless networks. While much progress has been achieved in…

Information Theory · Computer Science 2014-08-26 Stelios Stefanatos , Angeliki Alexiou

We consider the proportional fair rate allocation in an 802.11 WLAN that supports multi-user MIMO (MU-MIMO) transmission by one or more stations. We characterise, for the first time, the proportional fair allocation of MU-MIMO spatial…

Networking and Internet Architecture · Computer Science 2014-04-24 Víctor Valls , Douglas J. Leith

This paper investigates the problem of distributed medium access control in a wireless multiple access network with an unknown finite number of homogeneous transmitters. An enhanced physical link layer interface is considered where each…

Information Theory · Computer Science 2018-11-28 Faeze Heydaryan , Yanru Tang , Jie Luo

Co-channel interference poses a challenge in any wireless communication network where the time-frequency resources are reused over different geographical areas. The interference is particularly diverse in cell-free massive multiple-input…

Signal Processing · Electrical Eng. & Systems 2024-04-19 Mahmoud Zaher , Emil Björnson , Marina Petrova

Wireless information-centric networks consider storage as one of the network primitives, and propose to cache data within the network in order to improve latency and reduce bandwidth consumption. We study the throughput capacity and delay…

Networking and Internet Architecture · Computer Science 2015-05-01 Bita Azimdoost , Cedric Westphal , Hamid R. Sadjadpour

In a wireless network, the efficiency of scheduling algorithms over time-varying channels depends heavily on the accuracy of the Channel State Information (CSI), which is usually quite ``costly'' in terms of consuming network resources.…

Networking and Internet Architecture · Computer Science 2014-04-01 Wenzhuo Ouyang , Atilla Eryilmaz , Ness B. Shroff

This article investigates the problem of dynamic spectrum access for canonical wireless networks, in which the channel states are time-varying. In the most existing work, the commonly used optimization objective is to maximize the…

Information Theory · Computer Science 2017-07-31 Yuhua Xu , Jinlong Wang , Qihui Wu , Jianchao Zheng , Liang Shen , Alagan Anpalagan

In this paper, we investigate the problem of cooperative relay in CR networks for further enhanced network performance. In particular, we focus on the two representative cooperative relay strategies, and develop optimal spectrum sensing and…

Information Theory · Computer Science 2012-10-22 Donglin Hu , Shiwen Mao

Proportional fairness is a popular service allocation mechanism to describe and analyze the performance of data networks at flow level. Recently, several authors have shown that the invariant distribution of such networks admits a product…

Probability · Mathematics 2015-06-18 Maria Vlasiou , Jiheng Zhang , Bert Zwart

Coded caching (CC) schemes exploit the cumulative cache memory of network users, outperforming traditional uncoded schemes where cache contents are only used locally. Interestingly, this CC gain can also be combined with the spatial…

Information Theory · Computer Science 2023-12-08 Kagan Akcay , MohammadJavad Salehi , Antti Tölli , Giuseppe Caire