International Journal of Advances in Telecommunications Electrotechnics Signals and Systems最新文献

Identification of Linear Time Invariant Systems Using FMCW Signals and Stretch Processing Receivers 利用FMCW信号和拉伸处理接收机识别线性时不变系统

International Journal of Advances in Telecommunications Electrotechnics Signals and Systems Pub Date : 2019-07-16 DOI: 10.11601/IJATES.V8I2.276

S. Häfner, Reiner Thomä

引用次数: 1

Evaluation of Simultaneous Speech Detection Based on MFCC-DTW with Two-Stage Normalization 基于MFCC-DTW的两阶段归一化语音检测的评价

International Journal of Advances in Telecommunications Electrotechnics Signals and Systems Pub Date : 2019-06-26 DOI: 10.11601/IJATES.V8I2.278

Alexandru-George Rusu, Radu-Sebastian Marinescu, C. Burileanu, Dumitru Bica

引用次数: 0

Higher Control Scheme Using Neural Second Order Sliding Mode and ANFIS-SVM strategy for a DFIG-Based Wind Turbine 基于神经二阶滑模和anfiss - svm策略的dfig风力机高级控制方案

International Journal of Advances in Telecommunications Electrotechnics Signals and Systems Pub Date : 2019-06-26 DOI: 10.11601/IJATES.V8I2.263

H. Benbouhenni, Z. Boudjema, A. Belaidi

引用次数: 12

Performance Analysis of Translucent Space Division Multiplexing Based Elastic Optical Networks 基于半透明空分复用的弹性光网络性能分析

International Journal of Advances in Telecommunications Electrotechnics Signals and Systems Pub Date : 2019-02-12 DOI: 10.11601/IJATES.V8I1.270

S. Iyer, Shree Prakash Singh

{"title":"Performance Analysis of Translucent Space Division Multiplexing Based Elastic Optical Networks","authors":"S. Iyer, Shree Prakash Singh","doi":"10.11601/IJATES.V8I1.270","DOIUrl":"https://doi.org/10.11601/IJATES.V8I1.270","url":null,"abstract":"The required upgradation of the network capacity of the single-mode fiber which is constrained by the non-linear Shannon’s limit, and the capacity provisioning needed by the future diverse Internet traffic can be resolved by the adoption of the Space Division Multiplexing (SDM) based Elastic Optical Networks (EONs) (SDM-b-EONs). In the current work, we focus on the performance analysis of a SDM-b-EON in which translucent lightpaths are routed through the spectral super-channels over the spatial single-mode fiber(s) bundle(s) links. In regard to regeneration, we investigate three scenarios which differ in their regeneration variability level in addition to the adjustment of modulation formats according to transmission route characteristics. We conduct extensive simulations considering an online traffic case and two realistic network topologies with different numbers of (i) fibers in every link, and (ii) transceivers available within SDM-b-EON. The obtained results demonstrate that when regeneration is conducted with complete flexibility and simultaneously the modulation format conversion is also permitted at every SDM-b-EON node both, largest traffic volume amounts can be provisioned, and significant SDM-b-EON performance scaling can be obtained with a corresponding increase in the utilized fibers amount.","PeriodicalId":30494,"journal":{"name":"International Journal of Advances in Telecommunications Electrotechnics Signals and Systems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42702127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance Evaluation of OOK, DPSK and Duo-binary Modulation Format based Mixed-Line-Rate (MLR) Optical Network 基于OOK、DPSK和双二进制调制格式的混合线率(MLR)光网络性能评估

International Journal of Advances in Telecommunications Electrotechnics Signals and Systems Pub Date : 2018-11-17 DOI: 10.11601/IJATES.V7I3.256

R. Bajpai, S. Sengar, S. Iyer, Shree Prakash Singh

{"title":"Performance Evaluation of OOK, DPSK and Duo-binary Modulation Format based Mixed-Line-Rate (MLR) Optical Network","authors":"R. Bajpai, S. Sengar, S. Iyer, Shree Prakash Singh","doi":"10.11601/IJATES.V7I3.256","DOIUrl":"https://doi.org/10.11601/IJATES.V7I3.256","url":null,"abstract":"With the steady increase in the heterogeneous Internet traffic, the optical wavelength division multiplexed (WDM) networks based on a mixed line rate (MLR) strategy have emerged as an efficient-solution. Also, with the migration from the legacy to the higher line rate(s), the advanced modulation format(s) (MF) is/are required. However, use of appropriate MF(s) for the higher line rate(s) still remains an open problem. In this article, we compare the performance of an On-Off Keying (OOK), Differential Phase Shift Keying (DPSK) and Duo-binary (DB) MF based MLR network in the presence of various physical layer impairment(s) (PLIs) for which, we propose a mathematical model based on various MFs. As a novelty, we validate the proposed theoretical model’s results by comparing them with the results obtained through simulations from OptSim, which has not been conducted in any existing study(s) thus far. Our simulation results show that the DB MF is perfectly suitable for high spectral-efficient MLR systems owing to its high resistance to various PLIs.","PeriodicalId":30494,"journal":{"name":"International Journal of Advances in Telecommunications Electrotechnics Signals and Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48118142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

High Resolution Estimation of AoA, AoD and TdoA from MIMO Channel Sounding Measurements with Virtual Antenna Arrays: Maximum-Likelihood vs. Unitary Tensor-ESPRIT 基于虚拟天线阵列MIMO信道探测测量的AoA、AoD和TdoA的高分辨率估计：最大似然与酉张量ESPRIT

International Journal of Advances in Telecommunications Electrotechnics Signals and Systems Pub Date : 2018-06-28 DOI: 10.11601/IJATES.V7I2.254

S. Haefner, R. Thoma

{"title":"High Resolution Estimation of AoA, AoD and TdoA from MIMO Channel Sounding Measurements with Virtual Antenna Arrays: Maximum-Likelihood vs. Unitary Tensor-ESPRIT","authors":"S. Haefner, R. Thoma","doi":"10.11601/IJATES.V7I2.254","DOIUrl":"https://doi.org/10.11601/IJATES.V7I2.254","url":null,"abstract":"Estimating the parameters of a geometric propagation model from MIMO channel sounding measurements will be considered, which requires the solution of an inverse problem. Thus, a model of the measured data is derived, which incorporates a model of the measurement system as well as the parameters of interest. Based on the data model a maximum-likelihood estimator will be derived to infer the model parameters. Because virtual antenna arrays are considerer, formed by step-wise rotating directive antennas at transmitter and receiver side, the MIMO measurements are conducted in the beam-space. Hence, the data model can be described by a multidimensional convolution of the measurement system and the propagation channel. Based on the convolutional modelling, the parameter estimation problem is transformed into a harmonic retrieval problem, which can be solved by an Unitary Tensor-ESPRIT algorithm. The maximum-likelihood and ESPRIT estimator are compared by Monte-Carlo simulations according to their root-mean-square estimation error.","PeriodicalId":30494,"journal":{"name":"International Journal of Advances in Telecommunications Electrotechnics Signals and Systems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44028821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Hybrid Fuzzy Congestion Controllers for Computer Networks Tuned by Modified Particle Swarm Optimization 基于改进粒子群优化的计算机网络混合模糊拥塞控制器

International Journal of Advances in Telecommunications Electrotechnics Signals and Systems Pub Date : 2018-06-01 DOI: 10.11601/IJATES.V7I2.250

Z. A. Karam

{"title":"Hybrid Fuzzy Congestion Controllers for Computer Networks Tuned by Modified Particle Swarm Optimization","authors":"Z. A. Karam","doi":"10.11601/IJATES.V7I2.250","DOIUrl":"https://doi.org/10.11601/IJATES.V7I2.250","url":null,"abstract":"One of the most debated issues nowadays is the quality of computer network service. The best internet service must provide a fast processing of the traffic. Each router has a queue of packets that provides a buffer space, where the packets wait for processing. Transmission Control Protocol (TCP) is a packets congestion control theory. Active Queue Management (AQM) is a mechanisms proposed to employ at gateways to improve the performance of TCP congestion control. AQM mechanisms aim to provide high link utilization with low loss rate and low queuing delay while reacting to load changes quickly. Random Early Detection (RED) is an extensively studied AQM algorithm that can detect congestion by dropping packets randomly with certain probability that serves as the function of the average queue size. In this work, hybrids Fuzzy Logic Controllers (FLC) are proposed to measure the router queue size directly by use them as a congestion controllers. A multiple hybrid fuzzy controllers are proposed, where (Proportional Integral Derivative controller (PID) -like FLC-Particle Swarm Optimization (PSO) Based, Proportional Derivative (PD)-like FLC with conventional I-PSO Based and PID tuned by Fuzzy Logic-PSO Based), which is provided to regulate the queue length, round trip time and packet loss. The Particle Swarmed Optimization (PSO) algorithm is used for tuning the gains of hybrid fuzzy logic controller which helps in reducing the error of the queue size. This is achieved through minimizing the rise time, peak time, settling time and overshoot of the AQM response. The empirical results revealed a high-performance improvement regarding the proposed method in comparison to previous works of other researchers.","PeriodicalId":30494,"journal":{"name":"International Journal of Advances in Telecommunications Electrotechnics Signals and Systems","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44939515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8