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

Modeling backhaul deployment costs in heterogeneous radio access networks using spatial point processes 基于空间点过程的异构无线接入网络回程部署成本建模

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-07-10 DOI: 10.1109/WIOPT.2014.6850371

V. Suryaprakash, G. Fettweis

引用次数: 8

ADAPTIVE: A Dynamic Index Auction for Spectrum sharing with Time-evolving Values 自适应:一种具有时变值的频谱共享动态索引拍卖

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-07-10 DOI: 10.1109/WIOPT.2014.6850340

M. Khaledi, A. Abouzeid

{"title":"ADAPTIVE: A Dynamic Index Auction for Spectrum sharing with Time-evolving Values","authors":"M. Khaledi, A. Abouzeid","doi":"10.1109/WIOPT.2014.6850340","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850340","url":null,"abstract":"Spectrum auction is considered a suitable approach to efficiently allocate spectrum among unlicensed users. In a typical spectrum auction, Secondary Users (SUs) bid to buy spectrum bands from a Primary Owner (PO) who acts as the auctioneer. Existing spectrum auctions assume that SUs have static and known values for the channels. However, in many real world settings, SUs do not know the exact value of channel access at first, but they learn it over time. In this paper, we study spectrum auctions in a dynamic setting where SUs can change their valuations based on their experiences with the channel. We propose ADAPTIVE, a dynAmic inDex Auction for sPectrum sharing with TIme-evolving ValuEs that maximizes the social welfare of the SUs. ADAPTIVE is based on multi-armed bandit models where for each user an allocation index is independently calculated in polynomial time. ADAPTIVE has some desired economic properties that are formally proven in the analysis. Also, we provide a numerical performance comparison between ADAPTIVE and the well known Vickrey second price auction as a representative of static auctions.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130004646","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: 9

Padé approximation for coverage probability in cellular networks 蜂窝网络中覆盖概率的逼近

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-07-10 DOI: 10.1109/WIOPT.2014.6850367

H. Nagamatsu, N. Miyoshi, T. Shirai

引用次数: 11

On the statistical properties of selection combining cooperative diversity over double Rice fading channels 水稻双衰落信道上选择组合合作多样性的统计特性研究

2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt) Pub Date : 2014-07-10 DOI: 10.1109/WIOPT.2014.6850299

Rym Khedhiri, N. Hajri, N. Youssef

{"title":"On the statistical properties of selection combining cooperative diversity over double Rice fading channels","authors":"Rym Khedhiri, N. Hajri, N. Youssef","doi":"10.1109/WIOPT.2014.6850299","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850299","url":null,"abstract":"This paper investigates the statistical properties of selection combining (SC) cooperative diversity over double Rice narrow-band fading channels under the transparent or amplify-and-forward (AF) strategy. It is assumed that the source, the destination, and relay stations are all equipped with single antenna. The Doppler power spectral density, associated with each of the double Rice fading processes, is considered to be symmetrical about the carrier frequency. Under the above conditions, analytical integral expressions are derived for the probability density function (PDF) and the cumulative distribution function (CDF) of the SC fading envelopes. Also, expressions for the level crossing rate (LCR) as well as the average duration of fades (ADF) are determined. For some cases, the integral expressions are shown to be approximated using the Laplace's method of integration. The approximations are verified to be accurate when the number of relay stations is large. The obtained results include those corresponding to the double Rayleigh and combined Rayleigh×Rice models as special cases of the double Rice fading channel. The validity of all the presented theoretical results are checked by computer simulations.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134140144","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

White space device emission limits in alternative DTT planning strategies 替代数字地面电视规划策略中的白色空间装置发射限制

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.2014.6850341

V. Petrini, Maria Missiroli, G. Riva, G. Corazza

引用次数: 0

The mutual benefits of primary-secondary user cooperation in wireless cognitive networks 无线认知网络中主从用户合作的互利

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.2014.6850310

E. Matskani, N. Chatzidiamantis, L. Georgiadis, I. Koutsopoulos, L. Tassiulas

{"title":"The mutual benefits of primary-secondary user cooperation in wireless cognitive networks","authors":"E. Matskani, N. Chatzidiamantis, L. Georgiadis, I. Koutsopoulos, L. Tassiulas","doi":"10.1109/WIOPT.2014.6850310","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850310","url":null,"abstract":"In cognitive radio networks, secondary users (SUs) may cooperate with the primary user (PU) in order to obtain more transmission opportunities and thus maximize their throughput. The synergy consists in the following: the SU opts to cooperate by using its own transmit power to improve the probability of successful transmission of the PU. By increasing the probability of successful packet transmission for the PU, the SU essentially increases the service rate of the PU queue and thus, for given packet arrival rate, it increases the chances that it will be empty, and the channel will be free to use. Due to power limitations however, SUs have to take intelligent decisions on whether to cooperate or not and at which power level. Cooperation policies in this framework require the solution of a constrained Markov decision problem with infinite state space. In our work, we restrict attention to the class of stationary policies that take randomized decisions of an SU activation and its transmit power in every time slot based only on spectrum sensing. The proposed class of policies is shown to achieve the same set of SU rates as the more general policies, while significantly enlarging the stability region of the PU queue. Finally, a lightweight distributed protocol based on the proposed class of policies is presented, which is amenable to implementation in realistic scenarios.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"26 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":"123537603","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

Energy-efficient two-hop LTE resource allocation in high speed trains with moving relays 移动中继高速列车中节能的两跳LTE资源分配

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.2014.6850342

Ahmad Alsharoa, Hakim Ghazzai, E. Yaacoub, Mohamed-Slim Alouini

引用次数: 12

On the delay/cost tradeoff in wireless mobile Delay-Tolerant Networks 无线移动容忍延迟网络的延迟/成本权衡

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.2014.6850332

Anna Sidera, S. Toumpis

引用次数: 7

On the throughput of full-duplex MIMO in the multi-link case 多链路情况下全双工MIMO的吞吐量研究

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.2014.6850328

Diep N. Nguyen, M. Krunz, S. Hanly

{"title":"On the throughput of full-duplex MIMO in the multi-link case","authors":"Diep N. Nguyen, M. Krunz, S. Hanly","doi":"10.1109/WIOPT.2014.6850328","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850328","url":null,"abstract":"We are concerned with the throughput of a full-duplex (FD) MIMO network. Unlike conventional half-duplex (HD) MIMO, two wireless devices of a bidirectional FD-MIMO link have freedom of selecting which antennas/RF-chains to transmit or receive before tuning their radiation patterns to maximize the link's throughput. The freedom in configuring the function of available RF-chains, resulting in various FD-MIMO transmission modes, is referred to as FD-MIMO freedom that is shown to significantly improve the spectral efficiency of a given link. For a given RF-chain/antenna selection of a set of FD-MIMO links, we end up with a non-convex throughput maximization problem of a heterogeneous MIMO network. We design both centralized (using the augmented Lagrange function) and distributed algorithm (using a hierarchical game and pricing) to solve the problem for its locally optimal solutions. Comparing the achieved throughput of the FD-MIMO network, averaged over all obtained locally optimal solutions, with that when FD-MIMO nodes choose to operate in an HD mode, we find the HD mode surprisingly outperforms the FD mode. This trend is also observed when exploring all possible communication modes of a small size FD-MIMO network.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"14 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":"123816647","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: 4

Ray-tracing wireless channel modeling and verification in Coordinated Multi-Point systems 协调多点系统中光线追踪无线信道建模与验证

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.2014.6850273

M. Amro, M. Landolsi, S. Zummo, M. Grieger, Martin Danneberg, G. Fettweis

{"title":"Ray-tracing wireless channel modeling and verification in Coordinated Multi-Point systems","authors":"M. Amro, M. Landolsi, S. Zummo, M. Grieger, Martin Danneberg, G. Fettweis","doi":"10.1109/WIOPT.2014.6850273","DOIUrl":"https://doi.org/10.1109/WIOPT.2014.6850273","url":null,"abstract":"Coordinated Multi-Point (CoMP) Multiple Input Multiple Output (MIMO) transmission improves user's coverage and data throughput particularly on the cell edges. To make full advantage of CoMP, radio planning tools need very accurate models that fully capture the MIMO channels characteristics. This paper presents detailed modeling and analysis of an uplink CoMP system using Ray-Tracing (RT)-based channel modeling. The contribution of this paper is to show how close RT simulations can predict end-to-end system performance compared to the real-world measured performance. Thorough drive test measurements and RT simulations were performed. CoMP and Conventional MIMO systems performances are evaluated and compared for measured and RT-simulated channels. The results of several scenarios show that the RT matches the measurements in terms of rates and geometrical properties. The CoMP gain resulting from the measurements is almost double the gain of RT simulations. The differences come from the hardware and the RT 3D models impairments.","PeriodicalId":381489,"journal":{"name":"2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt)","volume":"30 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":"132225363","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