2014 11th International Symposium on Wireless Communications Systems (ISWCS)最新文献_第8页

Combining interference alignment and two-way relaying in partially connected networks with only local CSI 在只有本地CSI的部分连接网络中结合干扰对准和双向中继

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933352

Daniel Papsdorf, R. S. Ganesan, Xiang Li, T. Weber, A. Klein

{"title":"Combining interference alignment and two-way relaying in partially connected networks with only local CSI","authors":"Daniel Papsdorf, R. S. Ganesan, Xiang Li, T. Weber, A. Klein","doi":"10.1109/ISWCS.2014.6933352","DOIUrl":"https://doi.org/10.1109/ISWCS.2014.6933352","url":null,"abstract":"In this paper, a network consisting of several partially connected subnetworks where each subnetwork includes one relay is considered. “Partially connected” means that not all nodes are connected to all relays. Some nodes may be connected to multiple relays. The entire bidirectional pair-wise communication between the nodes takes place via the intermediate half-duplex amplify-and-forward relays, considering two-way relaying. The algorithm proposed in this paper is a closed-form solution which requires only local channel state information (CSI) to achieve interference alignment. The properness condition for the proposed algorithm is derived. The process of interference alignment is decomposed into signal alignment, channel alignment and transceive zero forcing. It is shown that all subnetworks can be investigated separately. This means the whole problem can be divided into subproblems. The simulation results show that the degrees of freedom increase for the considered partially connected network in comparison with the fully connected version of the considered network.","PeriodicalId":431852,"journal":{"name":"2014 11th International Symposium on Wireless Communications Systems (ISWCS)","volume":"34 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117191348","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

Spectral efficient channel estimation algorithms for FBMC/OQAM systems: A comparison FBMC/OQAM系统的频谱高效信道估计算法:比较

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933445

L. Baltar, A. Mezghani, J. Nossek

引用次数: 5

Optimal power control for cooperative underlay cognitive system 协同底层认知系统的最优功率控制

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933416

Marwa Chami, M. Pischella, D. L. Ruyet

引用次数: 2

Low false alarm rate RPL network monitoring system by considering timing inconstancy between the rank measurements 低虚警率RPL网络监控系统考虑了等级测量之间的时序不恒定

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933391

Takumi Matsunaga, Kentaroh Toyoda, I. Sasase

{"title":"Low false alarm rate RPL network monitoring system by considering timing inconstancy between the rank measurements","authors":"Takumi Matsunaga, Kentaroh Toyoda, I. Sasase","doi":"10.1109/ISWCS.2014.6933391","DOIUrl":"https://doi.org/10.1109/ISWCS.2014.6933391","url":null,"abstract":"The IPv6 Routing Protocol for Low-power and Lossy networks (RPL) is a standard routing protocol to realize the Internet of Things (IoT). In order to realize secure IoT network, the Destination-Oriented Directed Acyclic Graph (DODAG) root collects information such as neighbor and parent ranks in each node and then observes network consistency by comparing a rank that a node sends to DODAG root with the rank that the same node sends to its neighbor nodes. However, the scheme has a problem that false detection rate is high since the DODAG root might compare a certain node's rank after update with its rank that its node sends to its neighbor nodes before update due to timing inconstancy between rank measurements. In this paper, we propose a low false alarm rate RPL network monitoring system by considering timing inconstancy between rank measurements. In the proposed scheme, each node sends ranks at the time when each node broadcasts the latest rank to the DODAG root so as to avoid inherent timing inconstancy, and each node attaches a timestamp at the time when each node sends and receives ranks and then sends the timestamp to the DODAG root in order to take timing inconstancy into consideration. We evaluate the false detection rates by computer simulation and we show that the proposed scheme reduces the false detection rate in comparison with the conventional scheme.","PeriodicalId":431852,"journal":{"name":"2014 11th International Symposium on Wireless Communications Systems (ISWCS)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130441940","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: 13

Accelerated service discovery in vehicular networks 车辆网络中的加速服务发现

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933383

C. Reinsch, Qi Wang, Ansgar R. S. Gerlicher, C. Grecos

引用次数: 0

Dynamic clustering and sleep mode strategies for small cell networks 小蜂窝网络的动态聚类和睡眠模式策略

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933487

S. Samarakoon, M. Bennis, W. Saad, M. Latva-aho

{"title":"Dynamic clustering and sleep mode strategies for small cell networks","authors":"S. Samarakoon, M. Bennis, W. Saad, M. Latva-aho","doi":"10.1109/ISWCS.2014.6933487","DOIUrl":"https://doi.org/10.1109/ISWCS.2014.6933487","url":null,"abstract":"In this paper, a novel cluster-based approach for optimizing the energy efficiency of wireless small cell networks is proposed. A dynamic mechanism based on the spectral clustering technique is proposed to dynamically form clusters of small cell base stations. Such clustering enables intra-cluster coordination among the base stations for optimizing the downlink performance through load balancing, while satisfying users' quality-of-service requirements. In the proposed approach, the clusters use an opportunistic base station sleep-wake switching mechanism to strike a balance between delay and energy consumption. The inter-cluster interference affects the performance of the clusters and their choices of active or sleep state. Due to the lack of inter-cluster communications, the clusters have to compete with each other to make decisions on improving the energy efficiency. This competition is formulated as a noncooperative game among the clusters that seek to minimize a cost function which captures the tradeoff between energy expenditure and load. To solve this game, a distributed learning algorithm is proposed using which the clusters autonomously choose their optimal transmission strategies. Simulation results show that the proposed approach yields significant performance gains in terms of reduced energy expenditures up to 40% and reduced load up to 23% compared to conventional approaches.","PeriodicalId":431852,"journal":{"name":"2014 11th International Symposium on Wireless Communications Systems (ISWCS)","volume":"941 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131713751","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: 17

Minimum power broadcast trees subject to interference 受干扰的最小功率广播树

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933311

Rebal Al-Jurdi, G. Sayegh, Hawraa Salami, I. Abou-Faycal, F. Zaraket

引用次数: 0

Robust multi-user decode-and-forward relaying with full-duplex operation 具有全双工操作的鲁棒多用户译码转发中继

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933411

Omid Taghizadeh, R. Mathar

引用次数: 12

Relay-aided interference alignment for multiple partially connected subnetworks 多个部分连接子网的中继辅助干扰校准

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933332

Xiang Li, Hussein Al-Shatri, R. S. Ganesan, Daniel Papsdorf, A. Klein, T. Weber

引用次数: 5

Integrating LTE broadband system in PMR band: OFDM vs. FBMC coexistence capabilities and performances 在PMR频段集成LTE宽带系统:OFDM与FBMC共存能力和性能

2014 11th International Symposium on Wireless Communications Systems (ISWCS) Pub Date : 2014-10-23 DOI: 10.1109/ISWCS.2014.6933433

Y. Medjahdi, D. L. Ruyet, F. Bader, L. Martinod

引用次数: 12