EURASIP Journal on Wireless Communications and Networking最新文献_第5页

Efficient improvement of energy detection technique in cognitive radio networks using K-nearest neighbour (KNN) algorithm 利用 KNN 算法有效改进认知无线电网络中的能量检测技术

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-02-27 DOI: 10.1186/s13638-024-02338-8

Aneesh Sarjit S. Musuvathi, Jofin F. Archbald, T. Velmurugan, D. Sumathi, S. Renuga Devi, K. S. Preetha

{"title":"Efficient improvement of energy detection technique in cognitive radio networks using K-nearest neighbour (KNN) algorithm","authors":"Aneesh Sarjit S. Musuvathi, Jofin F. Archbald, T. Velmurugan, D. Sumathi, S. Renuga Devi, K. S. Preetha","doi":"10.1186/s13638-024-02338-8","DOIUrl":"https://doi.org/10.1186/s13638-024-02338-8","url":null,"abstract":"With the birth of the IoT era, it is evident that the existing number of devices is going to rise exponentially. Any two devices will communicate with each other using the same frequency band with limited availability. Therefore, it is of vital importance that this frequency band used for communication be used efficiently to accommodate the maximum number of devices with the available radio resources. Cognitive radio (CR) technology serves this exact purpose. The stated one is an intelligent radio that is made to automatically identify the optimal wireless channel in the available wireless spectrum at a given instant. An important functionality of CR is spectrum sensing. Energy detection is a very popular algorithm used for spectrum sensing in CR technology for efficient allocation of radio resources to the devices intended to communicate with each other. Energy detection detects the presence of a primary user (PU) signal by continuously monitoring a selected frequency bandwidth. The conventional energy detection technique is known to perform poorly in lower SNR ranges. This paper works towards the improvement of the energy detection algorithm with the help of machine learning (ML). The ML model uses the general properties of the signal as training data and classifies between a PU signal and noise at very low SNR ranges (− 25 to − 10 dB). In this research, a K-nearest neighbours (KNN) model is selected for its versatility and simplicity. Upon testing the model with an out-of-sample dataset, the KNN model produced a detection accuracy of 94.5%.","PeriodicalId":12040,"journal":{"name":"EURASIP Journal on Wireless Communications and Networking","volume":"7 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140010711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Joint data power control and LSFD design in distributed cell-free massive MIMO under non-ideal UE hardware 非理想 UE 硬件条件下分布式无小区大规模 MIMO 的联合数据功率控制和 LSFD 设计

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-02-14 DOI: 10.1186/s13638-024-02334-y

Ning Li, Pingzhi Fan

引用次数: 0

Detection and performance analysis for MIMO visible light communication system using joint optical spatial and pulse amplitude width modulation 使用联合光空间和脉冲振幅宽度调制的多输入多输出可见光通信系统的检测和性能分析

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-02-13 DOI: 10.1186/s13638-024-02335-x

Wei-Chiang Wu

{"title":"Detection and performance analysis for MIMO visible light communication system using joint optical spatial and pulse amplitude width modulation","authors":"Wei-Chiang Wu","doi":"10.1186/s13638-024-02335-x","DOIUrl":"https://doi.org/10.1186/s13638-024-02335-x","url":null,"abstract":"Conventional optical spatial modulation (SM) scheme activates one of the light-emitting diodes (LEDs) to transmit an intensity-modulated optical signal, in which the index of the activated LED is determined by spatial symbol and the emitted intensity is controlled by temporal symbol. In order to enhance the spectral efficiency (bits per channel use), we propose a joint SM and pulse amplitude width modulation (PAWM) as a novel optical spatial–temporal signaling scheme. In this paper, the proposed SM-PAWM optical signaling scheme is applied in a multi-input multi-output (MIMO) visible light communication (VLC) system. Employing optimal maximum likelihood (ML) algorithm to extract the spatial and temporal symbols is computationally prohibitive; hence, we develop a novel low-complexity detection scheme that converts the joint optimization problem separately to decode the spatial and temporal symbols. Moreover, theoretical results in terms of the successful identification probability of activated LED as well as the overall symbol error rate are derived. Extensive computer simulations are performed to validate the analytical results. It is shown that the proposed detection scheme is a feasible alternative to the ML detector in the VLC-MIMO system employing SM-PAWM.","PeriodicalId":12040,"journal":{"name":"EURASIP Journal on Wireless Communications and Networking","volume":"62 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139769609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Towards intelligent user clustering techniques for non-orthogonal multiple access: a survey 面向非正交多址接入的智能用户聚类技术：一项调查

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-01-24 DOI: 10.1186/s13638-024-02333-z

Syed M. Hamedoon, Jawwad Nasar Chattha, Muhammad Bilal

{"title":"Towards intelligent user clustering techniques for non-orthogonal multiple access: a survey","authors":"Syed M. Hamedoon, Jawwad Nasar Chattha, Muhammad Bilal","doi":"10.1186/s13638-024-02333-z","DOIUrl":"https://doi.org/10.1186/s13638-024-02333-z","url":null,"abstract":"With the increasing user density of wireless networks, various user partitioning techniques or algorithms segregate users into smaller, more manageable clusters. The benefit of user clustering techniques in non-orthogonal multiple access (NOMA) is to optimize resource allocation and improve network performance, spectral efficiency, and user fairness in next-generation wireless networks, particularly in scenarios with a high density of users and diverse channel conditions. With increasing users, the network creates clusters before implementing non-orthogonal multiple access within these clusters. In this paper, we have organized and classified various user clustering techniques deployed from the perspective of NOMA-based communication in the current era. Furthermore, researchers have highlighted some works deploying joint resource allocation and clustering optimization based on various criteria to enhance the overall sum rate of the network. We also identify low-complexity user clustering techniques for multiple applications, e.g. the Internet of Things, unmanned aerial vehicles, and reconfigurable intelligent surfaces in the 5G and beyond communication networks.","PeriodicalId":12040,"journal":{"name":"EURASIP Journal on Wireless Communications and Networking","volume":"48 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139560091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing spectrum efficiency in 6G multi-UAV networks through source correlation exploitation 通过源相关性开发优化 6G 多无人机网络的频谱效率

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-01-18 DOI: 10.1186/s13638-023-02332-6

{"title":"Optimizing spectrum efficiency in 6G multi-UAV networks through source correlation exploitation","authors":"","doi":"10.1186/s13638-023-02332-6","DOIUrl":"https://doi.org/10.1186/s13638-023-02332-6","url":null,"abstract":"<h3>Abstract</h3> In the context of 6G and 5G communication networks, particularly in disaster-stricken areas with a surging demand for connectivity and the rapid evolution of the internet of everything (IoE), the imperative for augmenting spectrum efficiency in unmanned aerial vehicles (UAVs) communication-enabled wireless networks becomes ever more pronounced. This work embarks on the mission of significantly enhancing spectrum efficiency by capitalizing on redundancies, such as correlations inherent in data sources like co-located video sensors. While the intuitive potential of exploiting redundancies for spectrum efficiency enhancement is apparent, our approach is systematically structured. We introduce a linear programming framework designed to meticulously allocate bandwidth to individual links based on their respective demands, while judiciously adhering to spatial spectrum reuse constraints. Subsequently, we employ this linear program to empirically quantify the improvements in spectrum efficiency engendered by source correlations. Furthermore, we elucidate various strategies for harnessing these correlations to maximize spectrum efficiency gains, while navigating the trade-off terrain between computational complexity and precision. Our findings resoundingly underscore the trans-formative power of identifying the precise set of source correlations, resulting in spectrum efficiency enhancements of up to two orders of magnitude. In terms of network performance, the judicious exploitation of source correlations grants admission to nearly 100% of delay-intolerant traffic, alongside substantial reductions in mean delay for delay-tolerant traffic.”","PeriodicalId":12040,"journal":{"name":"EURASIP Journal on Wireless Communications and Networking","volume":"212 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new pilot assignment scheme for mitigating pilot contamination in uplink massive multi-input–multi-output (MIMO) systems 用于减轻上行链路大规模多输入多输出 (MIMO) 系统中先导污染的新先导分配方案

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-01-04 DOI: 10.1186/s13638-023-02329-1

引用次数: 0

Tconns: a novel time-varying context-aware offloading strategy for mobile edge computing Tconns：针对移动边缘计算的新型时变上下文感知卸载策略

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-01-04 DOI: 10.1186/s13638-023-02331-7

Meiguang Zheng, Jie Li, Yu Hu, Hui Xiao, Zhigang Hu

{"title":"Tconns: a novel time-varying context-aware offloading strategy for mobile edge computing","authors":"Meiguang Zheng, Jie Li, Yu Hu, Hui Xiao, Zhigang Hu","doi":"10.1186/s13638-023-02331-7","DOIUrl":"https://doi.org/10.1186/s13638-023-02331-7","url":null,"abstract":"Mobility is a fundamental feature of mobile edge computing. Due to the mobility of users, the contextual attributes of cloudlets such as server resources and network state will dynamically change with time during offloading, showing time-varying and fuzzy characteristics. To this end, how to make efficient offloading decision to provide low-latency, low-power and highly reliable services in MEC has become a critical issue. In this paper, we propose a time-varying context-aware cloudlet decision algorithm based on neutrosophic set, TConNS ({text {(The Code of TConNS is available at https://github.com/zhengLabs/NSO)}}). Firstly, we establish a representation model of the multi-dimensional time-varying context of candidate cloudlets, including the mobile residence time. Secondly, we adopt the backward generator of cloud model theory to transform the contextual raw data into a single-valued neutrosophic set with the expression ability for fuzzy information. Finally, we use a series of appropriate operations under the own unique computing system of neutrosophic set to obtain the best cloudlet. Extensive experiments show that TConNS reduces the average response time by about 49% and the average energy consumption by about 46%, and also reduces the number of task failures.","PeriodicalId":12040,"journal":{"name":"EURASIP Journal on Wireless Communications and Networking","volume":"58 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139092227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implementation of highly isolation OLR: based microstrip full-duplex Tx/Rx antenna systems with low insertion loss for contemporary wireless system applications 为当代无线系统应用实现具有低插入损耗的高隔离度 OLR：基于微带全双工 Tx/Rx 天线系统

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-01-04 DOI: 10.1186/s13638-023-02330-8

Rania H. Elabd, Amr H. Hussein, Marwa E. Mousa, Ahmed A.Kabeel

{"title":"Implementation of highly isolation OLR: based microstrip full-duplex Tx/Rx antenna systems with low insertion loss for contemporary wireless system applications","authors":"Rania H. Elabd, Amr H. Hussein, Marwa E. Mousa, Ahmed A.Kabeel","doi":"10.1186/s13638-023-02330-8","DOIUrl":"https://doi.org/10.1186/s13638-023-02330-8","url":null,"abstract":"This paper presents a Highly Isolation open-loop resonators (OLR)—based microstrip full-duplex Tx/Rx antenna systems with low insertion loss for contemporary wireless system applications. Through a T-junction combiner, the proposed diplexer is accomplished by combining two OLR—based band-pass filters tuned at two distinct frequencies. The system is implemented on a Rogers TMM4 substrate with a loss tangent of 0.002, a dielectric constant of 4.7, and a thickness of 1.52 mm. The suggested full duplex has dimensions of (90 × 70) mm2. It achieves a modest frequency space ratio of R = 0.1646 in both transmit and receive modes by having two resonance frequencies of ({f}_{t}) = 2.191 GHz and ({f}_{r}) = 2.584 GHz, respectively. The simulated structure displays good insertion losses (IL) of approximately 1.2 dB and 1.79 dB for the two channels, respectively, at fractional bandwidths of 1.24% at 2.191 GHz and 0.636% at 2.584 GHz. The simulated isolation values for 2.191 GHz and 2.584 GHz are 53.3 dB and 66.5 dB, respectively.","PeriodicalId":12040,"journal":{"name":"EURASIP Journal on Wireless Communications and Networking","volume":"26 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139092220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dimensioning payload size for fast retransmission of MQTT packets in the wake of network disconnections 确定有效载荷大小，以便在网络断开后快速重传 MQTT 数据包

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-01-02 DOI: 10.1186/s13638-023-02327-3

Marco Domingues, José N. Faria, David Portugal

引用次数: 0

Outage performance and energy efficiency optimization of wireless-powered millimeter-wave sensor networks 无线供电毫米波传感器网络的中断性能和能效优化

IF 2.6 4区计算机科学

EURASIP Journal on Wireless Communications and Networking Pub Date : 2024-01-02 DOI: 10.1186/s13638-023-02328-2

Xiaowu Li, Fuan Xiao, Kun Tang, Entao Luo

{"title":"Outage performance and energy efficiency optimization of wireless-powered millimeter-wave sensor networks","authors":"Xiaowu Li, Fuan Xiao, Kun Tang, Entao Luo","doi":"10.1186/s13638-023-02328-2","DOIUrl":"https://doi.org/10.1186/s13638-023-02328-2","url":null,"abstract":"With the widespread use of wireless sensor networks, one of the most pressing concerns is extending the lifetime of the sensors. By deploying directional antenna arrays, millimeter wave (mmWave) is a possible candidate for wireless energy transfer (WPT). This paper investigates a beneficial combination of WPT and data transmission in a typical mmWave sensor network with Rayleigh channels, where a transmission interval can be divided into two sub-intervals. During the first sub-interval, one hybrid access point (HAP) employs beamforming techniques to transfer energy for serving multiple sensors within the service sector. The sensors then transmit their individual signal in turn to the HAP based on time division multiple address (TDMA) strategy by using the whole harvested energy. According to stochastic geometry, the exact and approximate expressions of beam outage probability for the considered system are determined, respectively. The optimal time allocation of energy harvesting and data transmission for sensors is examined in order to maximize the energy efficiency of the system. The optimization problem can be translated into corresponding parametric form, and the resulting optimization problem can be solved using the Lagrange dual method with Karush–Kuhn–Tucker (KKT) conditions. The numerical results show the variation trend of the beam outage probability under various parameters and verify the accuracy of the theoretical analyses. Furthermore, the simulation results illustrate that the proposed optimal time allocation strategy can significantly enhance the overall energy efficiency of the system compared with a similar scheme.","PeriodicalId":12040,"journal":{"name":"EURASIP Journal on Wireless Communications and Networking","volume":"55 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139078546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0