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Nowadays the radio interface of several standards is enhanced with advanced technologies such as OFDMA and extension technology such as relay. By using those promising transmission technology for the next generation wireless communications,…

Networking and Internet Architecture · Computer Science 2013-10-25 Maryam Basly , Hedia Kochkar , Ammar Bouallegue

This paper presents a spectrum monitoring algorithm for Orthogonal Frequency Division Multiplexing (OFDM) based cognitive radios by which the primary user reappearance can be detected during the secondary user transmission. The proposed…

Information Theory · Computer Science 2015-06-23 Abdelmohsen Ali , Walaa Hamouda

We consider a slotted wireless network in an infrastructure setup with a base station (or an access point) and N users. The wireless channel gain between the base station and the users is assumed to be i.i.d., and the base station seeks to…

Information Theory · Computer Science 2013-08-01 Venkatesh Ramaiyan

This work considers the orthogonal frequency division multiple access (OFDMA) technology that enables multiple unmanned aerial vehicles (multi-UAV) communication systems to provide on-demand services. The main aim of this work is to derive…

Signal Processing · Electrical Eng. & Systems 2023-04-26 Asad Mahmood , Thang X. Vu , Shree Krishna Sharma , Symeon Chatzinotas , Björn Ottersten

Interference mitigation strategies are deemed to play a key role in the context of the next generation (B4G/5G) of multicellular networks based on orthogonal frequency division multiple access. Fractional and soft frequency reuse (FFR, SFR)…

Signal Processing · Electrical Eng. & Systems 2024-01-19 Jan García Morales , Guillem Femenias , Felip Riera Palou

Mobile networks are intriguing in recent years due to their practical implications. Previous routing strategies for improving transport efficiency have little attention what order should the packets be forwarded, just simply used…

Networking and Internet Architecture · Computer Science 2018-04-18 Ganhua Wu

Pinching-antenna (PA) systems route millimeter wave (mmWave) signals through a leaky waveguide and radiate them at "pinch" apertures, offering low-cost line-of-sight (LoS) coverage. However, when multiple PAs serve multiple users…

Signal Processing · Electrical Eng. & Systems 2025-05-27 Thrassos K. Oikonomou , Sotiris A. Tegos , Panagiotis D. Diamantoulakis , Yuanwei Liu , George K. Karagiannidis

We investigate the unsourced random access scheme assuming that the base station is equipped with multiple antennas, and propose a high-performing solution utilizing on-off-division multiple access. We assume that each user spreads its…

Information Theory · Computer Science 2024-06-11 Mert Ozates , Mohammad Kazemi , Tolga M. Duman

This paper presents a problem of queuing theoretic performance modeling and analysis of Orthogonal Frequency Division Multiple Access (OFDMA) under broad-band wireless networks. We consider a single-cell WiMAX environment in which the base…

Networking and Internet Architecture · Computer Science 2013-04-09 Abdelali El Bouchti , Said El Kafhali , Abdelkrim Haqiq

Reconfigurable intelligent surfaces (RISs) is a novel communication technology that has been recently presented as a potential candidate for beyond fifth-generation wireless communication networks. In this paper, we propose a priority-aware…

Systems and Control · Electrical Eng. & Systems 2024-12-30 Lakshmikanta Sau , Priyadarshi Mukherjee , Sasthi C. Ghosh

Wireless communication is a key element in the realization of the Industrial Internet of Things for flexible and cost-efficient monitoring and control of industrial processes. Wireless mesh networks using IEEE 802.15.4 have a high potential…

Networking and Internet Architecture · Computer Science 2018-06-28 Florian Kauer , Maximilian Köstler , Volker Turau

In this paper, we consider the problem of power efficient uplink scheduling in a Time Division Multiple Access (TDMA) system over a fading wireless channel. The objective is to minimize the power expenditure of each user subject to…

Networking and Internet Architecture · Computer Science 2007-10-08 Nitin Salodkar , Abhay Karandikar , Vivek S. Borkar

The use of unmanned aerial vehicles (UAVs) as communication platforms is of great practical significance in future wireless networks, especially for on-demand deployment in temporary events and emergency situations. Although prior works…

Information Theory · Computer Science 2018-01-09 Qingqing Wu , Rui Zhang

In order to dynamically adapt the transmission bandwidth in wireless local area networks (WLANs), dynamic channel bonding (DCB) was introduced in IEEE 802.11n. It has been extended since then, and it is expected to be a key element in IEEE…

Networking and Internet Architecture · Computer Science 2019-07-02 Sergio Barrachina-Muñoz , Francesc Wilhelmi , Boris Bellalta

Orthogonal time frequency space (OTFS) has been widely acknowledged as a promising wireless technology for challenging transmission scenarios, including high-mobility channels. In this paper, we investigate the pilot design for the…

Information Theory · Computer Science 2023-10-31 Mingcheng Nie , Shuangyang Li , Deepak Mishra

In this paper, we propose a distributed multi-hop interference avoidance algorithm, namely, IAA to avoid co-channel interference inside a wireless body area network (WBAN). Our proposal adopts carrier sense multiple access with collision…

Networking and Internet Architecture · Computer Science 2016-11-03 Mohamad Jaafar Ali , Hassine Moungla , Ahmed Mehaoua

One of the main problems in WIMAX is to share the medium by multiple users who compete for access. Various random access mechanisms, such as ALOHA and its corresponding variations have been widely studied as efficient methods to coordinate…

Information Theory · Computer Science 2015-01-06 Abdellah Zaaloul , Mohamed Ben El Aattar , Mohamed Hanini , Abdelkrim Haqiq , Mohammed Boulmalaf

We propose a novel distributed random access scheme for wireless networks based on slotted ALOHA, motivated by the analogies between successive interference cancellation and iterative belief-propagation decoding on erasure channels. The…

Information Theory · Computer Science 2016-11-15 Cedomir Stefanovic , Petar Popovski , Dejan Vukobratovic

In this paper, we propose fairness-oriented packet scheduling (PS) schemes with power-efficient control mechanism for future packet radio systems. In general, the radio resource management functionality plays an important role in new OFDMA…

Networking and Internet Architecture · Computer Science 2010-07-15 Stanislav Nonchev , Mikko Valkama

Fixed Broadband Wireless Access is a promising technology which can offer high speed data rate from transmitting end to customer end which can offer high speed text, voice, and video data. IEEE 802.16 WirelessMAN is a standard that…

Networking and Internet Architecture · Computer Science 2013-12-30 Arifa Ferdousi , Farhana Enam , Sadeque Reza Khan