2012 IV International Congress on Ultra Modern Telecommunications and Control Systems最新文献_第2页

A Monte Carlo simulation approach to finding optimal parameter settings for soft handovers in WCDMA 一种寻找WCDMA软切换最佳参数设置的蒙特卡罗模拟方法

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459661

Sarel F. Roets, Poovendren Govender

引用次数: 1

Convergence based anti-windup design method and its application to flight control 基于收敛的防卷绕设计方法及其在飞行控制中的应用

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459667

B. Andrievsky, N. Kuznetsov, G. Leonov, A. Pogromsky

引用次数: 17

GPS, Galileo and Glonass L1 signal detection algorithms based on bandpass sampling techniques 基于带通采样技术的GPS、Galileo和Glonass L1信号检测算法

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459675

M. Al-Aboodi, Ali Albu-Rghaif, I. Lami

{"title":"GPS, Galileo and Glonass L1 signal detection algorithms based on bandpass sampling techniques","authors":"M. Al-Aboodi, Ali Albu-Rghaif, I. Lami","doi":"10.1109/ICUMT.2012.6459675","DOIUrl":"https://doi.org/10.1109/ICUMT.2012.6459675","url":null,"abstract":"This paper proposes two GNSS signal detection front-end algorithms for GNSS receivers, thus saving valuable resources in chasing signals that are not available. These algorithms can also be used to develop a fast multi-signal GNSS software receiver. With the planed completion of Galileo and Glonass CDMA systems, a GNSS receiver can take advantage of these and GPS signals to aid localization in bad reception areas such as urban-canyons. Such receivers deploy all available resources to find signals even when signals are not available. This paper proposes two approaches that can rapidly detect, in a single view, any GNSS signal power present. The first approach analysis the three signals excitations to a nonlinear bandpass sampling (BPS) receiver that folds these three signals, with their harmonics, to their first Nyquist zone (FNZ). Then, it analyzes their behavior model based on a Volterra algorithm to obtain kernels of these three GNSS signals, if available. Because all three GNSS signals are transmitted with the same carrier frequency, the second approach filters out the right-side/lobe of the Glonass signal and the left-side/lobe of the Galileo signal. This will enable none overlapped folding, based on BPS, of these two signals with the 3rd GPS harmonic in FNZ. These approaches make any GNSS receiver well-informed of available signals, and so devote appropriate resources to acquire and track available signals only. Matlab simulation results prove these two approaches and show that much valuable overall processing time, especially on Smartphones, can be saved by adopting these approaches.","PeriodicalId":337446,"journal":{"name":"2012 IV International Congress on Ultra Modern Telecommunications and Control Systems","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122616696","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: 6

Formulations and algorithms for the multi-path selection problem in network routing 网络路由中多路径选择问题的表述与算法

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459762

N. Kazmi, A. Koster, J. Branke

{"title":"Formulations and algorithms for the multi-path selection problem in network routing","authors":"N. Kazmi, A. Koster, J. Branke","doi":"10.1109/ICUMT.2012.6459762","DOIUrl":"https://doi.org/10.1109/ICUMT.2012.6459762","url":null,"abstract":"Traffic bifurcation over multiple paths may be used to balance load on telecommunication networks. This balancing of load not only improves resilience against link failures but also provides an indication of the margin available for growth in demand values. In this paper, we present a novel mixed integer programming formulation for minimization of maximum link utilization in the case of link failure. The new formulation is much more compact than a previously proposed formulation. Additionally, we propose a local search heuristic with exact neighborhood search to tackle larger problems within reasonable computational time. The empirical examination on several test problems demonstrates that, with the new compact problem formulation, CPLEX is able to find solutions much quicker. The heuristic works well and in several cases yields better solutions than ILP in a given time limit, or provides solutions for problems where ILP could not even find one valid solution in the given time limit. In cases where ILP is able to find the optimal solution, the heuristic algorithm obtains the same solution usually in less time.","PeriodicalId":337446,"journal":{"name":"2012 IV International Congress on Ultra Modern Telecommunications and Control Systems","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122199894","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

Simplified fiber-wireless distribution of HD video in passive and active W-band close proximity terminals 简化了无源和有源w波段近距离终端中高清视频的光纤无线分布

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459722

A. Lebedev, R. Rodes, Xianbin Yu, J. Olmos, I. Monroy, S. Forchhammer

引用次数: 0

Analysis of the impact of primary user switching strategies in cognitive radio networks 认知无线网络中主用户切换策略的影响分析

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459793

O. Salameh, K. D. Turck, S. D. Vuyst, S. Wittevrongel, H. Bruneel

引用次数: 1

Stability and capacity of peer-to-peer assisted video-on-demand applications 点对点辅助视频点播应用的稳定性和容量

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459688

F. Robledo, P. Rodríguez-Bocca, P. Romero, Claudia Rostagnol

{"title":"Stability and capacity of peer-to-peer assisted video-on-demand applications","authors":"F. Robledo, P. Rodríguez-Bocca, P. Romero, Claudia Rostagnol","doi":"10.1109/ICUMT.2012.6459688","DOIUrl":"https://doi.org/10.1109/ICUMT.2012.6459688","url":null,"abstract":"We propose a mathematical framework for the optimal design of a video on-demand (VoD) application under regime. Peers join the network following a Poissonian process, download progressively one or possibly many concurrent video contents, and abort the system when they wish. The system is supported by static servers managed by the operator, called super-peers, and the altruism of peers, that upload resources and might stay online even after completing downloading. Our goal is to minimize the expected download time perceived by end-users under regime. We propose a general fluid model, and show that it is stable, reaching its regime. Via the Little's law, we find closed expressions for the expected waiting time under regime in terms of the popularity of different contents, file sharing efficiency and other network parameters. We state theoretically that this system outperforms traditional Content Delivery Networks (CDN). The operator can decide only the number of video replicas stored in each super-peer, a fact that has a direct impact on the mean waiting times. Hence, a combinatorial optimization problem is introduced, whose nature is similar to the multi-knapsack problem (i.e. the items are video contents, and the knapsacks are the super-peers storage). A greedy randomized resolution is here designed, and a comparison between traditional content distribution systems promotes the deployment of peer-to-peer video on-demand services. Finally, real-life scenarios are studied based on traces taken from YouTube. The results confirm that the peer-to-peer model can outperform five times the throughput of traditional CDN under flash-crowded scenarios.","PeriodicalId":337446,"journal":{"name":"2012 IV International Congress on Ultra Modern Telecommunications and Control Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129013808","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

A fuzzy MADM ranking approach for vertical mobility in next generation hybrid networks 下一代混合网络垂直移动性的模糊MADM排序方法

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459676

A. Mehbodniya, F. Kaleem, K. Yen, F. Adachi

{"title":"A fuzzy MADM ranking approach for vertical mobility in next generation hybrid networks","authors":"A. Mehbodniya, F. Kaleem, K. Yen, F. Adachi","doi":"10.1109/ICUMT.2012.6459676","DOIUrl":"https://doi.org/10.1109/ICUMT.2012.6459676","url":null,"abstract":"The wireless technologies in a heterogeneous wireless network usually differ in terms of, but not limited to, their offered bandwidths, operating frequencies and costs, coverage areas, and latencies. Currently, no single wireless technology claims to provide cost-effective services, which offers high bandwidths and low latencies to all mobile users in a large coverage area. This is where the need for well-organized vertical handoffs (VHOs) between heterogeneous wireless technologies become evident. This paper presents a new VHO algorithm which takes into account a complete set of system attributes to fulfill two tasks. The first task is to perform the VHO Necessity Estimation (VHONE) utilizing several parallel Fuzzy Logic Controllers (FLCs) with reduced rule sets to estimate the VHO necessity. The second task is the selection of the best network as the target for VHO, where a ranking algorithm is developed based on TOPSIS. Priority Weights for the different system attributes are calculated based on a Fuzzy Analytical Hierarchy Process (FAHP). Later, simulations based on four traffic classes (conversational, streaming, background, and interactive) in the presence of three wireless networks (WLAN, WMAN, and WWAN), are carried out using a comprehensive wireless simulation test-bed that contains all the necessary Radio Resource Management (RRM) modules.","PeriodicalId":337446,"journal":{"name":"2012 IV International Congress on Ultra Modern Telecommunications and Control Systems","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129423779","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: 19

Random constrained pseudo-Boolean optimization algorithm for multiprocessor systems and clusters 多处理器系统和集群的随机约束伪布尔优化算法

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459711

L. Kazakovtsev

引用次数: 5

Hybrid FSO/RF test link FSO/RF混合测试链路

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459718

Z. Kolka, Z. Kincl, V. Biolková, D. Biolek

引用次数: 14