Transactions on Emerging Telecommunications Technologies最新文献_第8页

A spatial-temporal graph gated transformer for traffic forecasting 用于交通预测的时空图门控转换器

IF 2.5 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-26 DOI: 10.1002/ett.5021

Haroun Bouchemoukha, Mohamed Nadjib Zennir, Ahmed Alioua

{"title":"A spatial-temporal graph gated transformer for traffic forecasting","authors":"Haroun Bouchemoukha, Mohamed Nadjib Zennir, Ahmed Alioua","doi":"10.1002/ett.5021","DOIUrl":"https://doi.org/10.1002/ett.5021","url":null,"abstract":"Accurate traffic forecasting is more necessary than ever for transportation departments, especially given its significant role in traffic planning, management, and control. However, most existing methods struggle to address complex spatial correlations on road networks, nonlinear temporal dynamics, and difficult long-term prediction. This article proposes a novel spatial temporal graph gated transformer (STGGT) to overcome these challenges. The suggested model differs from Google's transformer because it uses a hybrid architecture that integrates graph convolutional networks (GCNs), attention, and gated recurrent units (GRUs) instead of solely relying on attention. Specifically, STGGT uses GCNs to extract spatial dependencies, utilizes attention and GRUs to extract temporal dependencies, and handle long-term prediction. Experiments indicate that STGGT outperforms the state-of-the-art baseline models on two real-world traffic datasets of 9%–40%. The proposed model offers a promising solution for accurate traffic forecasting, simultaneously addressing the challenges of complex spatial correlations, nonlinear temporal dynamics, and long-term prediction.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141488193","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

DRL-based customised resource allocation for sub-slices in 6G network slicing 6G 网络切片中基于 DRL 的子切片定制资源分配

IF 2.5 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-26 DOI: 10.1002/ett.5016

Meignanamoorthi D, Vetriselvi V

{"title":"DRL-based customised resource allocation for sub-slices in 6G network slicing","authors":"Meignanamoorthi D, Vetriselvi V","doi":"10.1002/ett.5016","DOIUrl":"https://doi.org/10.1002/ett.5016","url":null,"abstract":"6G network services demand significant computer resources. Network slicing offers a potential solution by enabling customized services on shared infrastructure. However, dynamic service needs in heterogeneous environments pose challenges to resource provisioning. 6G applications like extended reality and connected vehicles require service differentiation for optimal quality of experience (QoE). Granular resource allocation within slices is a complex issue. To address the complexity of QoE services in dynamic slicing, a deep reinforcement learning (DRL) approach called customized sub-slicing is proposed. This approach involves splitting access, transport, and core slices into sub-slices to handle service differentiation among 6G applications. The focus is on creating sub-slices and dynamically scaling slices for intelligent resource allocation and reallocation based on QoS requirements for each sub-slice. The problem is formulated as an integer linear programming (ILP) optimization problem with real-world constraints. To effectively allocate sub-slices and dynamically scale resources, the Advantage Actor-Critic (A2C)-based Network Sub-slice Allocation and Optimization (NS-AO) algorithm is proposed. Experimental results demonstrate that the proposed algorithm outperforms the state of the art in terms of training stability, learning time, sub-slice acceptance rate, and resilience to topology changes.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141488195","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

PAM: Predictive analytics and modules-based computation offloading framework using greedy heuristics and 5G NR-V2X PAM：利用贪婪启发法和 5G NR-V2X 的预测分析和基于模块的计算卸载框架

IF 2.5 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-25 DOI: 10.1002/ett.5003

Muhammad Ilyas Khattak, Hui Yuan, Ayaz Ahmad, Manzoor Ahmed, Ajmal Khan, Inamullah

{"title":"PAM: Predictive analytics and modules-based computation offloading framework using greedy heuristics and 5G NR-V2X","authors":"Muhammad Ilyas Khattak, Hui Yuan, Ayaz Ahmad, Manzoor Ahmed, Ajmal Khan,  Inamullah","doi":"10.1002/ett.5003","DOIUrl":"https://doi.org/10.1002/ett.5003","url":null,"abstract":"Recent advancements in distributed computing systems have shown promising prospects in enabling the effective usage of many next-generation applications. These applications include a wide range of fields, such as healthcare, interactive gaming, video streaming, and other related technologies. Among such solutions are the evolving vehicular fog computing (VFC) frameworks that make use of IEEE and 3GPP protocols and use advanced optimization algorithms. However, these approaches often rely on outdated protocols or computationally intensive mathematical techniques for solving or representing their optimization models. Additionally, some of these frameworks have not thoroughly considered the type of application during their evaluation and validation phases. In response to these challenges, we have developed the “predictive analytics and modules” (PAM) framework, which operates on a time and event-driven basis. It utilizes up-to-date 3GPP protocols to address the inherent unpredictability of VFC-enabled distributed computing systems required in smart healthcare systems. Through a combination of a greedy heuristic approach and a distributed offloading architecture, PAM efficiently optimizes decisions related to task offloading and computation allocation. This is achieved through specialized algorithms that provide support to computationally weaker devices, all within a time frame of under 100 ms. To assess the performance of PAM in comparison to three benchmark methodologies, the evaluation pathways that we employed are average response time, probability density function, pareto-analysis, algorithmic run time, and algorithmic complexity.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141488392","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

Less sample-cooperative spectrum sensing against large-scale Byzantine attack in cognitive wireless sensor networks 认知型无线传感器网络中对抗大规模拜占庭攻击的少样本合作频谱感知

IF 2.5 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-24 DOI: 10.1002/ett.5015

Jun Wu, Mingyuan Dai, Xuyang Teng, Chao Wu, Meilin He, Haoyu Liang, Hao Chen, Ye Jin, Weiwei Cao

{"title":"Less sample-cooperative spectrum sensing against large-scale Byzantine attack in cognitive wireless sensor networks","authors":"Jun Wu, Mingyuan Dai, Xuyang Teng, Chao Wu, Meilin He, Haoyu Liang, Hao Chen, Ye Jin, Weiwei Cao","doi":"10.1002/ett.5015","DOIUrl":"https://doi.org/10.1002/ett.5015","url":null,"abstract":"Cooperative spectrum sensing (CSS) has emerged as a promising strategy for identifying available spectrum resources by leveraging spatially distributed sensors in cognitive wireless sensor networks (CWSNs). Nevertheless, this open collaborative approach is susceptible to security threats posed by malicious sensors, specifically Byzantine attack, which can significantly undermine CSS accuracy. Moreover, in extensive CWSNs, the CSS process imposes substantial communication overhead on the reporting channel, thereby considerably diminishing cooperative efficiency. To tackle these challenges, this article introduces a refined CSS approach, termed weighted sequential detection (WSD). This method incorporates channel state information to validate the global decision made by the fusion center and assess the trust value of sensors. The trust value based weight is assigned to sensing samples, which are then integrated into a sequential detection framework within a defined time window. This sequential approach prioritizes samples based on descending trust values. Numerical simulation results reveal that the proposed WSD outperforms conventional fusion rules in terms of the error probability, sample size, achievable throughput, and latency, even under varying degrees of Byzantine attack. This innovation signifies a substantial advancement in enhancing the reliability and efficiency of CSS.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141488389","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

Identical code-data cyclic shift transmission for time-dispersive channel 时差信道的同码数据循环移位传输

IF 2.5 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-19 DOI: 10.1002/ett.5014

S. Vasudevan, S. Lenty Stuwart

{"title":"Identical code-data cyclic shift transmission for time-dispersive channel","authors":"S. Vasudevan, S. Lenty Stuwart","doi":"10.1002/ett.5014","DOIUrl":"https://doi.org/10.1002/ett.5014","url":null,"abstract":"Multiple access techniques working on time-dispersive channels must employ spreading codes with good correlation properties to minimize multipath interference and multiple access interference. Popular spreading codes, such as the Walsh-Hadamard code (orthogonal) and maximal length sequence (m-sequence) (semi-orthogonal), suffer from intersymbol interference (ISI). ISI increases owing to the poor autocorrelation properties of the spreading codes, resulting in a deteriorated bit-error-rate (BER) performance. Recently, a cyclic interleaving transmission has been proposed to enhance multipath diversity in the presence of ISI. In this study, an identical code-data cyclic shift (ICDCS) transmission scheme is introduced to achieve improved multipath diversity in time-dispersive channels. The proposed ICDCS transmission is designed based on cyclically shifting identical codes and data. The code and data involved in the first set of spreading are cyclically shifted for the next set of spreading, and the two sets are blended to perform cyclic interleaving. The data are despread from each multipath component at the receiver using different codes derived from a single m-sequence through identical code cyclic shifting (ICCS). Consequently, multipath diversity increases, resulting in a significant reduction in the BER. ICDCS transmission effectively utilizes all multipath components and the codes derived from the ICCS to mitigate ISI. The simulation results confirm that the proposed ICDCS transmission significantly enhances the multipath diversity compared to the conventional cyclic interleaving transmission scheme.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141435695","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

Cognitive blockchain and its application to optimize performance in blockchain systems 认知区块链及其在优化区块链系统性能中的应用

IF 2.5 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-19 DOI: 10.1002/ett.5009

Reyhaneh Ameri, Mohammad Reza Meybodi

{"title":"Cognitive blockchain and its application to optimize performance in blockchain systems","authors":"Reyhaneh Ameri, Mohammad Reza Meybodi","doi":"10.1002/ett.5009","DOIUrl":"https://doi.org/10.1002/ett.5009","url":null,"abstract":"A distributed ledger called a blockchain is used for logging authenticated cryptographic transactions. The global ledger is updated with transactions using consensus techniques. Consensus algorithms are developed for networks with untrusted nodes to achieve reliability. Academics are paying attention to this technology because it has essential features like decentralization, stability, anonymity, and transparency. Even though the blockchain has some unique features, it has to deal with many challenges and restrictions, such as scalability, security, hidden centrality, and high cost. Artificial intelligence and blockchain are technologies that have been much discussed in the last decade and are developing rapidly. Combining the two to meet the existing challenges can have fascinating results. In this paper, we introduce the novel idea of cognitive blockchain by incorporating intelligent thought into the blockchain. With cognitive capabilities, blockchain technology can perceive the state of the network, analyze the data it has collected, make good decisions, and take appropriate action to improve network performance. We provide an operational framework for cognitive blockchain, which primarily refers to the connections between fundamental cognitive processes, including the perception-action cycle, data analytics, knowledge discovery, intelligent decision-making, and service provision. Then, using learning automata, we provide methods for creating cognitive engines for performance optimization by intelligently adjusting the block size, time interval, and validators in blockchain systems with BFT-based consensus algorithms. Several experiments have been conducted to assess the suggested approaches' effectiveness. The findings demonstrate that the proposed performance optimization approach improves blockchain performance criteria.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 7","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141435694","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 trusted mechanism against device reputation attacks in Web-of-Things applications 针对物联网应用中设备信誉攻击的可信机制

IF 3.6 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-14 DOI: 10.1002/ett.5011

Geetanjali Rathee, Chaker Abdelaziz Kerrache, Carlos T. Calafate, Houbing Song

{"title":"A trusted mechanism against device reputation attacks in Web-of-Things applications","authors":"Geetanjali Rathee, Chaker Abdelaziz Kerrache, Carlos T. Calafate, Houbing Song","doi":"10.1002/ett.5011","DOIUrl":"https://doi.org/10.1002/ett.5011","url":null,"abstract":"The Web-of-Things (WoT) seeks to simplify IoT management by providing an interface for controlling and monitoring the devices. To this end, it can provide several web-based applications focused on home automation, smart cities, smart agriculture and so forth. In particular, preventing device reputation attacks, which is one of the most significant threats to the WoT, is critical when considering the huge amount of information that is generated, processed and analyzed by the network. There may be situations where intruders deploy fake devices to introduce false information, downgrading the information from valid devices for their own benefits. Different authors have proposed various security methods and algorithms using machine learning, cryptographic or semantics-based methods. However, the existing mechanisms have various limitations in terms of accuracy, storage overhead, and computational/communication overheads, that still need to be addressed. The trusted mechanism can be considered as another way of ensuring security while transmitting the information through the Internet by identifying their legitimacy. Hence, the aim of this article is to propose a secure and trusted WoT framework using similarity index and community of interest similarity score schemes. The proposed mechanism is evaluated against existing schemes that consider both cryptographic and semantic parameters to ensure the security in the network by using metrics such as recommendations, decay time factor, and packet loss recovery rate.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141326638","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

An optimal attention PLSTM-based classification model to enhance the performance of IoMT attack detection in healthcare application 基于 PLSTM 的最佳注意力分类模型，用于提高医疗保健应用中 IoMT 攻击检测的性能

IF 3.6 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-10 DOI: 10.1002/ett.5008

Kavitha Dhanushkodi, Jeyalakshmi Shunmugiah, Santhana Marichamy Velladurai, Saranya Rajendran

{"title":"An optimal attention PLSTM-based classification model to enhance the performance of IoMT attack detection in healthcare application","authors":"Kavitha Dhanushkodi, Jeyalakshmi Shunmugiah, Santhana Marichamy Velladurai, Saranya Rajendran","doi":"10.1002/ett.5008","DOIUrl":"https://doi.org/10.1002/ett.5008","url":null,"abstract":"The Internet of Medical Things (IoMT) has revolutionized the healthcare industry by allowing remote monitoring of patients suffering from chronic diseases. However, security concerns arise due to the potential life-threatening damage that can be caused by attacks on IoMT devices. To enhance the security of IoMT devices, researchers propose the use of novel artificial intelligence-based intrusion detection techniques. This article presents a hybrid alex net model and an orthogonal opposition-based learning Yin-Yang-pair optimization (OOYO) optimized attention-based Peephole long short term memory (PLSTM) model to distinguish between malicious and normal network traffic in the IoMT environment. To improve the scalability of the model in handling the random and dynamic behavior of malicious attacks, the hyper parameters of the PLSTM framework are optimized using the OOYO algorithm. The proposed model is evaluated on different IoT benchmark datasets such as N-BaIoT and IoT healthcare security. Experimental results demonstrate that the proposed model provides a classification accuracy of 99% and 98% on the healthcare security and N-BaIoT datasets, respectively. Moreover, the proposed model exhibits high generalization ability for multi-class classifications and is effective in reducing the false discovery rate. Overall, the proposed model achieves high accuracy, scalability, and generalization ability in identifying malicious traffic, which can help improve the security solution of IoMT devices.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141304188","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

Reliable community card system for detecting and isolating selfish vehicles in smart and connected communities-based VDTN's 基于智能互联社区的 VDTN 中用于检测和隔离自私车辆的可靠社区卡系统

IF 3.6 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-09 DOI: 10.1002/ett.5006

Ghani Ur Rehman, Muhammad Inam Ul Haq, Afzal Badshah, Muhammad Zubair, Amil Daraz, Salman A. AlQahtani, Atif M. Alamri

{"title":"Reliable community card system for detecting and isolating selfish vehicles in smart and connected communities-based VDTN's","authors":"Ghani Ur Rehman, Muhammad Inam Ul Haq, Afzal Badshah, Muhammad Zubair, Amil Daraz, Salman A. AlQahtani, Atif M. Alamri","doi":"10.1002/ett.5006","DOIUrl":"https://doi.org/10.1002/ett.5006","url":null,"abstract":"Smart and connected communities (SCC) is a new area of the Internet of Things with the potential to improve people's lives. The goal of developing SCC for a community is to encourage people to focus on the present, consider the future, and reflect on the past. In SCC, nodes (vehicles) can use their mobility to collect data from interconnected devices and send it to a variety of delay-tolerant applications. Vehicular delay tolerant networks are an ideal fit for such services. However, the problem is that the devices and nodes (vehicles), having limited resources, may become unwilling to cooperate due to their selfish behavior. This article presents a reliable community card system (RCCS) with two main parts: a reliable community and community-based card tracking system (CBCTS). The reliable community contains all trustworthy vehicles with a certain level of community reputation determined by their honesty level. In CBCTS, every vehicle needs a community card to participate in the network and the neighboring vehicles act as monitoring vehicle. The evaluation results show that the proposed RCCS is quite effective, with detection time and packet delivery. Similarly, it causes minimal overhead and energy consumption compared to all other existing techniques.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141298349","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

Achievable secrecy rate analysis of OFDM-based multi-user untrusted relay networks with imperfect CSI 具有不完美 CSI 的基于 OFDM 的多用户不信任中继网络的可实现保密率分析

IF 3.6 4区计算机科学

Transactions on Emerging Telecommunications Technologies Pub Date : 2024-06-09 DOI: 10.1002/ett.5005

Volkan Özduran, Nikolaos Nomikos, Imran Shafique Ansari

{"title":"Achievable secrecy rate analysis of OFDM-based multi-user untrusted relay networks with imperfect CSI","authors":"Volkan Özduran, Nikolaos Nomikos, Imran Shafique Ansari","doi":"10.1002/ett.5005","DOIUrl":"https://doi.org/10.1002/ett.5005","url":null,"abstract":"This study investigates the impact of imperfect channel state information (CSI), caused by channel estimation errors and feedback delays, on the physical-layer security performance of multi-user relay networks. More specifically, a multi-user untrusted half/full-duplex (HD/FD) uni/bi-directional wireless amplify-and-forward (AF) relay network is studied, adopting orthogonal frequency division multiplexing (OFDM). In order to minimize the information leakage, it is considered that a limited number of friendly jammers affect the untrusted relay. In this context, the achievable secrecy rate of the relay network is theoretically analyzed and optimization problems are formulated and solved for the untrusted relay's location and power allocation. Monte Carlo simulations are conducted to validate the theoretical findings, revealing that channel estimation errors cause coding gain losses for low signal-to noise ratio (SNR) while their impact becomes negligible for high SNR. Also, a large number of user-pairs achieves higher secrecy rate while FD relaying further improves the secrecy performance. Finally, bi-directional relaying provides higher achievable secrecy rate over uni-directional relaying.","PeriodicalId":23282,"journal":{"name":"Transactions on Emerging Telecommunications Technologies","volume":"35 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141298350","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