2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)最新文献_第4页

Performance evaluation of censoring-enabled systems for sequential detection in large wireless sensor networks 大型无线传感器网络中用于顺序检测的审查系统的性能评估

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850284

Mohammed Karmoose, Karim G. Seddik, Ahmed Sultan

引用次数: 1

Percolation on the information theoretic secure SINR graph: Upper and lower bounds 信息论安全SINR图的渗透:上界和下界

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850356

R. Vaze, Srikanth K. Iyer

引用次数: 3

Power control policies for a wireless link with energy harvesting transmitter and receiver 具有能量收集发射机和接收机的无线链路的功率控制策略

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850333

Tingjun Chen, Sheng Zhou, Wei Chen, Z. Niu

引用次数: 4

Resource optimization over DVB-RCS satellite links through the use of SPDY 通过使用SPDY实现DVB-RCS卫星链路上的资源优化

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850280

A. Salam, M. Luglio, C. Roseti, F. Zampognaro

{"title":"Resource optimization over DVB-RCS satellite links through the use of SPDY","authors":"A. Salam, M. Luglio, C. Roseti, F. Zampognaro","doi":"10.1109/WIOPT.2014.6850280","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850280","url":null,"abstract":"SPDY is a recent Web technology aimed to improve webpages load time and resource utilization, through the implementation of: multiplexing and prioritization of webpage objects, header compression, resource pushing and encryption. Most of these techniques are already implemented in Performance Enhancing Proxies (PEPs), which are adopted in geostationary satellite systems to optimize TCP-based application performance. Thus, SPDY is expected to provide benefits for satellite communications resource management. This paper provides a careful assessment of SPDY performance over satellite links, compliant to DVB-RCS standard, with return link resources assigned on demand through a Demand Assignment Multiple Access (DAMA) method. Such a reference scenario constitutes a challenging communication environment due to both the limited return link bandwidth and the relatively high latency. Performance evaluation has been carried out through a satellite network emulator, which reproduces physical layer satellite impairments, while running real implementations of both TCP/IP stack and SPDY.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133029753","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: 5

Reduced-dimension power allocation over clustered channels in cognitive radios system under co-channel interference 同信道干扰下认知无线电系统聚类信道的降维功率分配

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.7130897

Mahdi Ben Ghorbel, M. Guenach, Mohamed-Slim Alouini

{"title":"Reduced-dimension power allocation over clustered channels in cognitive radios system under co-channel interference","authors":"Mahdi Ben Ghorbel, M. Guenach, Mohamed-Slim Alouini","doi":"10.1109/WIOPT.2014.7130897","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.7130897","url":null,"abstract":"The objective of this paper is to propose a reduceddimension resource allocation scheme in the context of cognitive radio system in presence of co-channel interference between users. We assume a multicarrier transmission for both the primary and secondary systems. Instead of optimizing the powers over all sub-carriers, the sub-carriers are grouped into clusters of sub-carriers, where the power of each sub-carrier is directly related to the power of the correspondent cluster. The power optimization is done only over the set of clusters instead of all sub-carriers which can significantly reduce the complexity of the resource allocation problem. The performance loss of the reduced dimension solution with respect to the optimal solution, where the optimization is carried over all active sub-carriers, allows trading-off complexity versus performance. Numerical evaluation indeed revealed that a limited performance loss occurs by optimizing over a reduced set of clusters instead of the full optimization in the context of cognitive radio systems.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132104316","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: 1

Modeling the effect of interferences among N collocated heterogeneous wireless networks N个异构无线网络间的干扰效应建模

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850295

B. Khan, Jong-Suk Ahn

{"title":"Modeling the effect of interferences among N collocated heterogeneous wireless networks","authors":"B. Khan, Jong-Suk Ahn","doi":"10.1109/WIOPT.2014.6850295","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850295","url":null,"abstract":"With the advent of wireless networks, the usage of mobile devices has been rapidly exploded due to their cable-free convenience. The ubiquity and dense population of mobile devices have led several heterogeneous wireless networks to be redundantly deployed as an underlying infrastructure in a given area, allowing mobile users to choose their preferred wireless networks. These co-placed different networks, however, tend to interfere with each other and therefore suffer from severe performance degradation. To estimate this deterioration, this paper proposes an analytic performance model which precisely evaluates both the inter-network interference and intra-network collision effect on a victim network when involved networks run the same backoff algorithm. Differently from a legacy hidden station model, our model requires a set of Markov chains to separately abstract behaviors of both interfered and interfering networks. Simulation validates that our proposed model predicts the interference impairments more accurately than the hidden station model and even the conventional interference model that ignores the backoff behavior in wireless networks.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129169753","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: 1

A near-optimal randomized algorithm for uplink resource allocation in OFDMA systems OFDMA系统中上行资源分配的近最优随机化算法

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850302

Yang Yang, Changwon Nam, N. Shroff

引用次数: 6

An economic model of subscriber offloading between Mobile Network Operators and WLAN operators 移动网络运营商和WLAN运营商之间用户卸载的经济模型

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850331

Cameron Patterson, A. B. Mackenzie, S. Glisic, B. Lorenzo, J. Röning, L. Dasilva

引用次数: 7

On the benefits of random FDMA schemes in ultra narrow band networks 随机FDMA方案在超窄带网络中的优势

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850364

Minh-Tien Do, C. Goursaud, J. Gorce

{"title":"On the benefits of random FDMA schemes in ultra narrow band networks","authors":"Minh-Tien Do, C. Goursaud, J. Gorce","doi":"10.1109/WIOPT.2014.6850364","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850364","url":null,"abstract":"Ultra narrow band transmission (UNB) systems have already been deployed and have proved to be ultra-efficient for point-to-point communications. This paper presents this technology and gives some insights on the scalability of UNB for a multi-point to point network. This configuration corresponds to an uplink scenario where multiple nodes compete to send their packets, with neither coordination nor feedback from the sink. In particular, we present and analyze two multiple access schemes based on random frequency selection: discrete random FDMA (DR-FDMA) and the new continuous random FDMA (CR-FDMA). An ideal system where the carrier frequencies are exactly obtained is first considered and extended to a more realistic case, with rough carrier frequencies. We analyze the system performance in terms of bit error rate and outage probability. The presented results clearly show that, even if in the ideal case, the DR-FDMA scheme outperforms the CR-FDMA scheme; in the realistic case, both schemes lead to similar performance. Thus, this paper highlights the fact that the use of CR-FDMA is very relevant in a realistic network as it bypasses the need of an accurate carrier frequency control, and thus permits the use of even the cheapest transmitters without loss of performance.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129561773","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: 41

Crack STIT tessellations for city modeling and impact of terrain topology on wireless propagation 城市建模与地形拓扑对无线传播的影响

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-05-12 DOI: 10.1109/WIOPT.2014.6850274

Xiaoxing Yu, Thomas Courtat, P. Martins, L. Decreusefond, J. Kélif

{"title":"Crack STIT tessellations for city modeling and impact of terrain topology on wireless propagation","authors":"Xiaoxing Yu, Thomas Courtat, P. Martins, L. Decreusefond, J. Kélif","doi":"10.1109/WIOPT.2014.6850274","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850274","url":null,"abstract":"This work proposes to model city maps with a particular family of random tessellations: Crack STIT tessellations. This family of tessellations allow the generation of realistic city maps with a reduced number of parameters: the Anisotropy Ratio (ξ) and the Mean Building Block Area (MBBA). These city models are then used as input to a 3D ray tracing simulator to compute received power distributions. The objective of this investigation is to identify the impact of random tessellation parameters on wireless propagation. For this purpose, path loss exponent γ is estimated from received power distributions obtained by simulation for different values of ξ and MBBA pairs. Simulations results clearly show a linear dependency between path loss γ, ξ and MBBA. Path loss γ increases with ξ while it decreases with MBBA. Furthermore the evolution of the surface occupation ratio between outdoor and overall surface is also investigated. This ratio is named Free Area Ratio (FAR) in the sequel. It decreases with MBBA according to a power law. The results obtained are particularly promising as they provide a parametric relation between path loss exponent γ and terrain topology. This considerably simplifies the radio planning and dimensioning process of cellular networks.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129597883","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: 7