Telecommunication Systems最新文献_第9页

6G for intelligent transportation systems: standards, technologies, and challenges 用于智能交通系统的 6G：标准、技术和挑战

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-25 DOI: 10.1007/s11235-024-01126-5

Amitkumar V. Jha, Bhargav Appasani, Mohammad S. Khan, Sherali Zeadally, Iyad Katib

{"title":"6G for intelligent transportation systems: standards, technologies, and challenges","authors":"Amitkumar V. Jha, Bhargav Appasani, Mohammad S. Khan, Sherali Zeadally, Iyad Katib","doi":"10.1007/s11235-024-01126-5","DOIUrl":"https://doi.org/10.1007/s11235-024-01126-5","url":null,"abstract":"The advent of the sixth-generation (6G) wireless communication technology brings forth immense opportunities for enhancing Intelligent Transportation Systems (ITS). We investigate the potential of 6G in revolutionizing transportation systems by analyzing the standards, technologies, and challenges associated with its implementation. Building upon the advancements of 5G, 6G introduces unprecedented capabilities, including ultra-high data rates, ultra-low latency, massive connectivity, and intelligent network orchestration. Leveraging these capabilities, 6G can facilitate seamless connectivity among vehicles, infrastructure, and pedestrians, enabling novel applications such as autonomous driving, smart traffic management, and cooperative collision avoidance. However, realizing the full potential of 6G for ITS entails addressing several challenges, including spectrum allocation, network security, resource management, and interoperability with existing infrastructures. We present a comprehensive overview of the latest developments in 6G standards and technologies, including mmWave communications, terahertz spectrum, visible light communication, Artificial Intelligence, and edge computing, emphasizing their relevance to ITS. We also describe these technologies in the context of ITS. Furthermore, we explore the potential benefits and impacts of 6G on transportation systems, highlighting the opportunities for improved safety, efficiency, and sustainability. Finally, we conclude by discussing the key challenges and research directions that must be addressed to effectively deploy 6G for ITS, thereby paving the way for the next generation of intelligent and connected transportation systems.","PeriodicalId":51194,"journal":{"name":"Telecommunication Systems","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140298088","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 sustainable certificateless authenticated searchable encryption with multi-trapdoor indistinguishability 具有多陷阱门不可区分性的可持续无证书认证可搜索加密技术

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-20 DOI: 10.1007/s11235-024-01121-w

引用次数: 0

A composite channel hopping algorithm for blind rendezvous in heterogeneous cognitive radio networks 异构认知无线电网络中用于盲会合的复合信道跳频算法

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-20 DOI: 10.1007/s11235-024-01123-8

Sangeeta Sa, Arunanshu Mahapatro

{"title":"A composite channel hopping algorithm for blind rendezvous in heterogeneous cognitive radio networks","authors":"Sangeeta Sa, Arunanshu Mahapatro","doi":"10.1007/s11235-024-01123-8","DOIUrl":"https://doi.org/10.1007/s11235-024-01123-8","url":null,"abstract":"In cognitive radio networks (CRNs), rendezvous is the vital step prior to the communication between two unlicensed secondary users (SUs), where the SUs hop on the same channel at the same time to establish a link. With the dramatic fall in the cost and size of wireless transceivers, it becomes more reasonable to apply multiple radios to achieve significant improvement in the rendezvous performance. However, most of the existing multiradio rendezvous algorithms are proposed for homogeneous CRNs where all the SUs are equipped with an equal number of radios and do not possess backward compatibility to SU with a single radio. In reality, the CRNs are heterogeneous in nature as SUs may have different numbers of radios. In this paper, a composite CH algorithm is proposed for an asynchronous and heterogeneous network to achieve blind rendezvous with full rendezvous diversity. An SU with m number radios are categorized into three groups those follow different channel hopping (CH) algorithms. The upper bound of the rendezvous latency is being evaluated with a brief theoretical and mathematical analysis. Extensive simulations have conducted for different performance metrics, and the results are compared with the state-of-art algorithms. Overall, the proposed algorithm shows better performance in heterogeneous CRNs.","PeriodicalId":51194,"journal":{"name":"Telecommunication Systems","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201088","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

Effective capacity of cooperative relaying systems with non-orthogonal multiple access 非正交多址合作中继系统的有效容量

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-20 DOI: 10.1007/s11235-024-01108-7

引用次数: 0

A novel joint mapping scheme design with low PAPR aided differential chaos shift keying system 低 PAPR 辅助差分混沌移调系统的新型联合映射方案设计

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-20 DOI: 10.1007/s11235-024-01122-9

{"title":"A novel joint mapping scheme design with low PAPR aided differential chaos shift keying system","authors":"","doi":"10.1007/s11235-024-01122-9","DOIUrl":"https://doi.org/10.1007/s11235-024-01122-9","url":null,"abstract":"<h3>Abstract</h3> In order to further improve the transmission and spectral efficiency of the MC-DCSK system, a novel security system called Joint Mapping Multi-Carrier Differential Chaos Shift Keying (JM-MC-DCSK) is proposed in this paper. A novel joint mapping scheme is designed which consists of two parts: matrix reshaping mapping and combination mapping. Moreover, in order to correctly demodulate the information bits in the index obtained through Maximum Likelihood Estimation (MLE), we propose a new index mapping algorithm to match this joint mapping scheme. The information bits are first mapped into U mutually orthogonal matrices in the matrix reshaping mapping structure. In this structure, we employ segmental shifts of the orthogonal submatrices instead of cyclic shifts to eliminate intra-signal interference, which contributes to the reliability of the system. Then, in the combination mapping structure, the information bits are modulated by N orthogonal carriers after being replicated U times. In each carrier signal, we arbitrarily select two sequences from the U orthogonal chaotic sequences to be superimposed. This scheme can map more information symbols and the randomness of the combination selection provides more flexibility for the mapping algorithm. The Bit Error Rate is derived and analyzed under Additive White Gaussian Noise and Rayleigh Fading Channel by Gaussian approximation method and central limit theorem, and numerical simulations are conducted to verify the correctness of theory. Additionally, the simulation results demonstrate that the system also has lower BER and Peak-to-Average Power Ratio, reflecting its significant theoretical and practical engineering value.","PeriodicalId":51194,"journal":{"name":"Telecommunication Systems","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140205440","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

On the use of Walsh domain equalizer for performance enhancement of MIMO-OFDM communication systems 论使用沃尔什域均衡器提高 MIMO-OFDM 通信系统的性能

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-20 DOI: 10.1007/s11235-023-01091-5

Khaled Ramadan

{"title":"On the use of Walsh domain equalizer for performance enhancement of MIMO-OFDM communication systems","authors":"Khaled Ramadan","doi":"10.1007/s11235-023-01091-5","DOIUrl":"https://doi.org/10.1007/s11235-023-01091-5","url":null,"abstract":"The purpose of this article is to investigate the viability of Multi-Carrier Modulation (MCM) systems based on the Fast Walsh Hadamard Transform (FWHT). In addition, a nonlinear Joint Low-Complexity Optimized Zero Forcing Successive Interference Cancellation (JLCOZF-SIC) equalizer is proposed. To that end, general equations for the number of flops of the proposed equalizer and various other equalizers are given. This article discusses the use of Banded Matrix Approximation (BMA) as a technique for reducing complexity. The proposed equalizer uses BMA to accomplish both equalization and co-Carrier Frequency Offset (co-CFO) corrections. In addition, three cases involving the proposed equalizer were investigated. In the first case, diagonal compensation is used. In the second case, BMA compensation is used. In the third case, complete matrix compensation is used. In the presence of frequency offset, noise, and frequency-selective Rayleigh fading environments, analysis and simulation results show that the OFDM-FWHT system with the proposed equalizer outperforms the conventional OFDM system with various linear and nonlinear equalizers.","PeriodicalId":51194,"journal":{"name":"Telecommunication Systems","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140200999","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

Adaptive MIMO-FSO space diversity MRC reception characteristics over Malaga turbulence channel with pointing errors 带有指向误差的马拉加湍流信道上的自适应 MIMO-FSO 空间分集 MRC 接收特性

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-19 DOI: 10.1007/s11235-024-01114-9

{"title":"Adaptive MIMO-FSO space diversity MRC reception characteristics over Malaga turbulence channel with pointing errors","authors":"","doi":"10.1007/s11235-024-01114-9","DOIUrl":"https://doi.org/10.1007/s11235-024-01114-9","url":null,"abstract":"<h3>Abstract</h3> Atmospheric turbulence channels experience quasi-static fading, which makes it relatively straightforward to utilize feedback information for link adaptive transmission. Applying adaptive modulation to MIMO systems can effectively mitigate the degradation of Free-Space Optical (FSO) signals under adverse turbulence conditions. In this paper, the joint influence of pointing error and Malaga distribution turbulence fading on the probability density function (PDF) of the received light intensity of a MIMO channel employing maximal ratio combining (MRC) is considered. The PDF of MRC combined channel is derived based on the moment generation function. Then, using the cumulative density function (CDF)-based method, we analyze the asymptotic spectral efficiency (SE) and average bit error rate (BER) performance of the adaptive MPSK-MIMO system under different turbulence intensities, beam waist radius, jitter standard deviation, and the number of transmit/receive apertures. In addition, we also compare the average BER performance of adaptive and non-adaptive MIMO systems with MRC receivers. Monte Carlo simulation further verifies our analysis. The derived results help quantify the diversity order of the systems we are considering.","PeriodicalId":51194,"journal":{"name":"Telecommunication Systems","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140166970","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

Robust transmission design for active IRS-aided multiuser MIMO cognitive radio systems with non-linear energy harvesting models 采用非线性能量收集模型的主动 IRS 辅助多用户 MIMO 认知无线电系统的鲁棒传输设计

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-19 DOI: 10.1007/s11235-024-01117-6

Pham Van Quyet, Ha Hoang Kha

{"title":"Robust transmission design for active IRS-aided multiuser MIMO cognitive radio systems with non-linear energy harvesting models","authors":"Pham Van Quyet, Ha Hoang Kha","doi":"10.1007/s11235-024-01117-6","DOIUrl":"https://doi.org/10.1007/s11235-024-01117-6","url":null,"abstract":"This paper studies a multiuser multiple-input multiple-output simultaneous wireless information and power transfer cognitive radio system with the aid of an active intelligent reflecting surface (IRS). Considering the scenario that nonlinear energy harvesting models and power splitting (PS) protocols are adopted at energy receivers and that channel state information (CSI) imperfections of the channels to the primary users (PUs) are taken into consideration, we aim at designing the secondary base station (SBS) transmit precoding matrices, the IRS reflection coefficient matrix, and the secondary user (SU) PS ratios. The design objective is to maximize the system sum-rate (SR) under the transmit power constraints at the SBS, amplification power constraints at the IRS, amplitude constraints on IRS reflection elements, robust interference power (IP) constraints at the PUs, and minimum harvested energy constraints at the SUs. The formulated optimization problem is intractable to directly solve since the design variables are nonlinearly coupled, the objective function and constraints are highly nonconvex, and robust IP constraints are semi-infinite. To tackle the mathematical challenges, we derive the amenable surrogate functions and constraints while to handle the semi-infinite robust IP constraints, we transform them into linear matrix inequalities. Then, to find optimized solutions to the considered design problem, we exploit alternating optimization frames to derive an efficient iterative algorithm (IA). The convergence and computational complexity of the developed IA are shown. Simulation results illustrate the performance gains of the designed problem and robustness of IP constraints against CSI imperfections. Additionally, the numerical results show that the active IRS-aided systems exhibit superior SR performance over the passive IRS-aided systems.\u0000","PeriodicalId":51194,"journal":{"name":"Telecommunication Systems","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140166964","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

Analysis of Bayesian game theoretic approach for the target channel selection of secondary user under heterogeneous cognitive radio network 异构认知无线电网络下二级用户目标信道选择的贝叶斯博弈论方法分析

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-18 DOI: 10.1007/s11235-024-01118-5

{"title":"Analysis of Bayesian game theoretic approach for the target channel selection of secondary user under heterogeneous cognitive radio network","authors":"","doi":"10.1007/s11235-024-01118-5","DOIUrl":"https://doi.org/10.1007/s11235-024-01118-5","url":null,"abstract":"<h3>Abstract</h3> This article delves into the investigation of parameters and associated issues in the context of a Bayesian game theory-based approach for selecting the target channel for secondary users in a licensed heterogeneous cognitive radio network. In such networks, cognitive or secondary users can enhance their activity within a licensed spectrum by dynamically selecting an available spectrum, thereby addressing the scarcity issue in the radio spectrum. The study adopts a game model where each user is treated as a network player, with the channel payoff or utility function serving as a crucial parameter for target channel selection. The game theory approach assumes that each player possesses knowledge of other players’ payoffs, although this assumption may only hold for some games. In auction-based games, for instance, other players’ payoffs or profits are unknown, introducing uncertainty. This type of game model falls under the Bayesian game model. The article presents the Bayesian battle of the sexes approach to address uncertainty in other players’ payoffs or profits and proposes possible causes for channel selection. The best response for secondary users and channel payoffs is computed using this approach. The Bayesian Nash equilibrium calculates the average payoff, taking into account various spectrum handoff parameters like waiting time and inactive probability. This comprehensive analysis aims to calculate the overall network characteristics in the given heterogeneous cognitive radio environment.","PeriodicalId":51194,"journal":{"name":"Telecommunication Systems","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140166963","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

Artificial neural network-based multiband μ-negative Hilbert curve fractal antenna using RSRR unit cell 使用 RSRR 单元的基于人工神经网络的多频带 μ 负希尔伯特曲线分形天线

IF 2.5 4区计算机科学

Telecommunication Systems Pub Date : 2024-03-18 DOI: 10.1007/s11235-024-01119-4

S. Rajapriya, R. Samson Daniel

{"title":"Artificial neural network-based multiband μ-negative Hilbert curve fractal antenna using RSRR unit cell","authors":"S. Rajapriya, R. Samson Daniel","doi":"10.1007/s11235-024-01119-4","DOIUrl":"https://doi.org/10.1007/s11235-024-01119-4","url":null,"abstract":"An electrically small multiband planar antenna is presented by using rectangular split ring resonator (RSRR) metamaterial element for LTE, WiMAX and WLAN applications. The designed antenna possesses asymmetric coplanar strip (ACS)-fed Hilbert Curve Fractal Antenna (HCFA) loaded with RSRR metamaterial for multiband radiation at 1.44 GHz, 3.76 GHz and 5.27 GHz. ACS-fed HCFA is responsible for creating the first (at 1.44 GHz) and second (at 3.76 GHz) resonance frequencies owing to the coupling between ACS-fed HCFA and ground plane. Moreover, the RSRR yields upper resonance at 5.27 GHz owing to the metamaterial transmission line. The stop band and pass band nature of the RSRR and its negative permeability characteristics are described using an effective medium theory. An equivalent circuit model of the proposed antenna is investigated with the help of Agilent ADS to validate the operating frequencies. Also, the geometrical parameters have been optimized using the artificial neural network (ANN), which is performed by MATLAB. The proposed antenna has been fabricated on a 18 × 16.5 × 1.6 mm3 FR-4 dielectric having ({upvarepsilon }_{{text{r}}}) = 4.4 and (tan {updelta }) = 0.02. It provides multiband response at 1.4 GHz, 4.4 GHz and 5.3 GHz with a − 10 dB impedance bandwidth of 330 MHz, 570 MHz, and 340 MHz, respectively, which is usable for LTE, WiMAX and WLAN band applications.","PeriodicalId":51194,"journal":{"name":"Telecommunication Systems","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140172976","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