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Primary user activity is a major bottleneck for existing routing protocols in cognitive radio networks. Typical routing protocols avoid areas that are highly congested with primary users, leaving only a small fragment of available links for…

网络与互联网体系结构 · 计算机科学 2016-08-05 Arsany Guirguis , Mohammed Karmoose , Karim Habak , Mustafa El-Nainay , Moustafa Youssef

In this paper, we present the performance of different broadcast schemes for multihop sensor networks based on mathematical modeling. In near future many applications will demand multicast (Broadcast) communication feature from the sensor…

网络与互联网体系结构 · 计算机科学 2010-08-18 S. Mehta , K. S. Kwak

Cognitive radio networks (CRNs) have traditionally focused on utilizing idle channels to enhance spectrum efficiency. However, as wireless networks grow denser, channel-centric strategies face increasing limitations. This paper introduces a…

信号处理 · 电气工程与系统科学 2024-12-11 Weidong Zhu , Xueqian Li , Longwei Wang , Zheng Zhang

One of the most widely used simulation environments for mobile wireless networks is the Network Simulator 2 (NS-2). However NS-2 stores its outcome in a text file, so there is a need for a visualization tool to animate the simulation of the…

网络与互联网体系结构 · 计算机科学 2009-02-27 Nikolaos S. Livathinos

Reconfigurable intelligent surface (RIS)-empowered communication, has been considered widely as one of the revolutionary technologies for next generation networks. However, due to the novel propagation characteristics of RISs, underlying…

The IEEE 802.22 is a new cognitive radio standard that is aimed at extending wireless outreach to rural areas. Known as wireless regional area networks, and designed based on the not-to-interfere spectrum sharing model, WRANs are…

网络与互联网体系结构 · 计算机科学 2016-03-14 Navid Tadayon , Sonia Aissa

In this paper, we investigate the joint cooperative spectrum sensing and access design problem for multi-channel cognitive radio networks. A general heterogeneous setting is considered where the probabilities that different channels are…

网络与互联网体系结构 · 计算机科学 2014-04-09 Le Thanh Tan , Long Bao Le

Millimeter wave (mmWave) multiple-input-multi-output (MIMO) is now a reality with great potential for further improvement. We study full-duplex transmissions as an effective way to improve mmWave MIMO systems. Compared to half-duplex…

信息论 · 计算机科学 2025-01-31 Mehdi Sattari , Hao Guo , Deniz Gündüz , Ashkan Panahi , Tommy Svensson

This paper studies the problem of transmitting multiple independent layered video streams over single-hop wireless networks using network coding (NC). We combine feedback-free random linear NC (RLNC) with unequal error protection (UEP) and…

信息论 · 计算机科学 2014-09-04 Mohammad Esmaeilzadeh , Neda Aboutorab

We investigate optimal channel assignment algorithms that maximize per node throughput in dense multichannel multi-radio (MC-MR) wireless networks. Specifically, we consider an MC-MR network where all nodes are within the transmission range…

网络与互联网体系结构 · 计算机科学 2012-09-05 Rahul Urgaonkar , Ram Ramanathan , Jason Redi , William N. Tetteh

Wireless communications at the chip scale emerge as a interesting complement to traditional wire-based approaches thanks to their low latency, inherent broadcast nature, and capacity to bypass pin constraints. However, as current trends…

新兴技术 · 计算机科学 2023-01-30 Bernat Ollé , Pau Talarn , Albert Cabellos-Aparicio , Filip Lemic , Eduard Alarcón , Sergi Abadal

Convolutional neural networks are state-of-the-art and ubiquitous in modern signal processing and machine vision. Nowadays, hardware solutions based on emerging nanodevices are designed to reduce the power consumption of these networks.…

The dual-cross scenario of the hybrid wireless sensor networks (WSNs) is studied and a novel MIMO Cluster Cooperative Assignment Cross Layer Scheduling Scheme (MCCA-CLSS) is proposed in this paper. The comparison and the predominance of the…

网络与互联网体系结构 · 计算机科学 2010-08-09 Yingji Zhong , Kyung Sup Kwak , Sana Ullah

In this paper, we propose a novel multi-channel network with infrastructure support, called an \textit{MC-IS} network, which has not been studied in the literature. To the best of our knowledge, we are the first to study such an…

网络与互联网体系结构 · 计算机科学 2014-02-18 Hong-Ning Dai , Raymond Chi-Wing Wong , Qinglin Zhao

Semantic communication has gained significant attention from researchers as a promising technique to replace conventional communication in the next generation of communication systems, primarily due to its ability to reduce communication…

信息论 · 计算机科学 2025-02-07 Loc X. Nguyen , Ye Lin Tun , Yan Kyaw Tun , Minh N. H. Nguyen , Chaoning Zhang , Zhu Han , Choong Seon Hong

In future wireless communication networks, existing active localization will gradually evolve into more sophisticated (passive) sensing functionalities. One main enabler for this process is the merging of information collected from the…

信号处理 · 电气工程与系统科学 2024-10-28 Maximilian Bauhofer , Silvio Mandelli , Marcus Henninger , Thorsten Wild , Stephan ten Brink

In wireless ad hoc networks, distributed nodes can collaboratively form an antenna array for long-distance communications to achieve high energy efficiency. In recent work, Ochiai, et al., have shown that such collaborative beamforming can…

信息论 · 计算机科学 2007-07-13 Athina P. Petropulu , Lun Dong , H. Vincent Poor

This paper addresses the design of transmit precoder and receive combiner matrices to support $N_{\rm s}$ independent data streams over a time-division duplex (TDD) point-to-point massive multiple-input multiple-output (MIMO) channel with…

信息论 · 计算机科学 2024-06-10 Tao Jiang , Wei Yu

Wireless Mesh network (WMN) is dynamically self-organizing and self-configured, with the nodes in the network automatically establishing an ad-hoc network and maintaining the mesh connectivity. The ability to use multiple-radios and…

网络与互联网体系结构 · 计算机科学 2013-05-14 Vinay Kapse , Urmila Shrawankar

Spectrum sensing is an essential enabling functionality for cognitive radio networks to detect spectrum holes and opportunistically use the under-utilized frequency bands without causing harmful interference to legacy networks. This paper…

信息论 · 计算机科学 2016-11-18 Zhi Quan , Shuguang Cui , Ali H. Sayed , H. Vincent Poor