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The multi-channel blind rendezvous problem in distributed cognitive radio networks (DCRNs) refers to how users in the network can hop to the same channel at the same time slot without any prior knowledge (i.e., each user is unaware of other…

Networking and Internet Architecture · Computer Science 2022-08-24 Qinglin Liu , Zhiyong Lin , Zongheng Wei , Jianfeng Wen , Congming Yi , Hai Liu

Mobile nodes are typically equipped with multiple radios and can connect to multiple radio access networks (e.g. WiFi, LTE and 5G). Consequently, it is important to design mechanisms that efficiently manage multiple network interfaces for…

Networking and Internet Architecture · Computer Science 2019-07-11 Markus Amend , Eckard Bogenfeld , MIlan Cvjetkovic , Veselin Rakocevic , Marcus Pieska , Andreas Kassler , Anna Brunstrom

In this paper, a cooperative protocol is investigated for a multi-hop network consisting of relays with buffers of finite size, which may operate in different communication modes. The protocol is based on the myopic decode-and-forward…

Information Theory · Computer Science 2022-02-23 Andreas Nicolaides , Constantinos Psomas , Ioannis Krikidis

This paper studies the maximum throughput achievable with optimal scheduling in multi-hop mmWave picocellular networks with Multi-user Multiple-Input Multiple-Output (MU-MIMO) radios. MU-MIMO enables simultaneous transmission to multiple…

Information Theory · Computer Science 2020-02-21 Felipe Gomez-Cuba , Michele Zorzi

We consider the problem of resource allocation and control of multihop networks in which multiple source-destination pairs communicate confidential messages, to be kept confidential from the intermediate nodes. We pose the problem as that…

Information Theory · Computer Science 2015-09-15 Yunus Sarikaya , C. Emre Koksal , Ozgur Ercetin

In decentralized multi-robot navigation, ensuring safe and efficient movement with limited environmental awareness remains a challenge. While robots traditionally navigate based on local observations, this approach falters in complex…

Robotics · Computer Science 2024-06-27 Senthil Hariharan Arul , Amrit Singh Bedi , Dinesh Manocha

Multicasting is an efficient technique for simultaneously transmitting common messages from the base station (BS) to multiple mobile users (MUs). Multicast scheduling over multiple channels, which aims to jointly minimize the energy…

Information Theory · Computer Science 2023-08-22 Ran Li , Chuan Huang , Xiaoqi Qin , Shengpei Jiang

In this paper, we propose a multi-channel full-duplex Medium Access Control (MAC) protocol for cognitive radio networks (MFDC-MAC). Our design exploits the fact that full-duplex (FD) secondary users (SUs) can perform spectrum sensing and…

Information Theory · Computer Science 2016-02-02 Tan Le Thanh , Long Bao Le

Data communication in sensor networks can have timing constraints like end to end deadlines. If the deadlines are not met either a catastrophe can happen in hard real time systems or performance deterioration can occur in soft real time…

Networking and Internet Architecture · Computer Science 2016-11-17 Mary Cherian , T. R. Gopalakrishnan Nair

This paper studies the consensus problem of general linear discrete-time multi-agent systems (MAS) with input constraints and bounded time-varying communication delays. We propose a robust distributed model predictive control (DMPC)…

Systems and Control · Electrical Eng. & Systems 2022-09-20 Henglai Wei , Changxin Liu , Yang Shi

In Cognitive Radio Networks (CRNs), the secondary users (SUs) are allowed to access the licensed channels opportunistically. A fundamental and essential operation for SUs is to establish communication through choosing a common channel at…

Networking and Internet Architecture · Computer Science 2014-04-15 Haisheng Tan , Jiajun Yu , Hongyu Liang , Tiancheng Lou , Francis C. M. Lau

This paper proposes a novel memetic algorithm (MA) for the blind equalization of digital multiuser channels with Direct-Sequence / Code-Division Multiple-Access (DS/CDMA) sharing scheme. Equalization involves two different tasks, the…

Signal Processing · Electrical Eng. & Systems 2024-12-18 Luis M. San-José-Revuelta , Pablo Casaseca-de-la-Higuera

An adaptive randomized distributed space-time coding (DSTC) scheme and algorithms are proposed for two-hop cooperative MIMO networks. Linear minimum mean square error (MMSE) receivers and an amplify-and-forward (AF) cooperation strategy are…

Information Theory · Computer Science 2013-03-19 T. Peng , R. C. de Lamare , A. Schmeink

Wireless Mesh Networks (WMNs) technology has been used in recent years for broadband access in both cities and rural areas. A key development is to equip routers with multiple directional antennas so that these routers can transmit to, or…

Networking and Internet Architecture · Computer Science 2016-07-08 Yuanhuizi Xu , Kwan-Wu Chin , Sieteng Soh

This paper investigates optimal scheduling for a cognitive multi-hop underwater acoustic network with a primary user interference constraint. The network consists of primary and secondary users, with multi-hop transmission adopted for both…

Systems and Control · Electrical Eng. & Systems 2023-12-05 Chen Peng , Urbashi Mitra

In this paper, a novel framework is proposed for optimizing the operation and performance of a large-scale, multi-hop millimeter wave (mmW) backhaul within a wireless small cell network (SCN) that encompasses multiple mobile network…

Computer Science and Game Theory · Computer Science 2017-05-23 Omid Semiari , Walid Saad , Mehdi Bennis , Zaher Dawy

Mobile edge computing (MEC) and millimeter wave (mmWave) communications are capable of significantly reducing the network's delay and enhancing its capacity. In this paper we investigate a mmWave and device-to-device (D2D) assisted MEC…

Signal Processing · Electrical Eng. & Systems 2022-07-19 Yanzhen Liu , Yunlong Cai , An Liu , Minjian Zhao , Lajos Hanzo

This paper proposes a multipath compensation algorithm (MCA) to enhance the performance of an ultrasonic local positioning system under adverse multipath conditions. The proposed algorithm is based on the accurate estimation of the…

Signal Processing · Electrical Eng. & Systems 2024-02-06 Teodoro Aguilera , Fernando J. Alvarez , David Gualda , Jose M. Villadangos , Alvaro Hernandez , Jesus Urena

Cognitive Radio Networks (CRN) have enabled us to efficiently reuse the underutilized radio spectrum. The MAC protocol in CRN defines the spectrum usage by sharing the channels efficiently among users. In this paper we propose a novel TDMA…

Networking and Internet Architecture · Computer Science 2013-01-18 Rajeev K. Shakya , Satyam Agarwal , Y. N. Singh , Nishchal K. Verma , Amitabha Roy

Relay-assisted cooperative wireless communication has been shown to have significant performance gains over the legacy direct transmission scheme. Compared with single relay based cooperation schemes, utilizing multiple relays further…

Networking and Internet Architecture · Computer Science 2015-03-19 Pei Liu , Chun Nie , Thanasis Korakis , Elza Erkip , Shivendra Panwar , Francesco Verde , Anna Scaglione