2009 6th International Symposium on Wireless Communication Systems最新文献_第3页

System level analysis of vertical sectorization for 3GPP LTE 3GPP LTE垂直细分的系统级分析

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285317

Osman N. C. Yilmaz, Seppo Hämäläinen, Jyri Hämäläinen

引用次数: 105

A testbed for emulation of MANETs in hostile scenarios 在敌对情况下模拟manet的测试平台

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285360

M. Pratesi, A. Colarieti, F. Santucci, A. Cola, Sebastiano Schillaci

引用次数: 1

Adaptive set-membership reduced-rank interference suppression for DS-UWB systems DS-UWB系统的自适应集隶属度降阶干扰抑制

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285350

P. Clarke, R. D. Lamare

{"title":"Adaptive set-membership reduced-rank interference suppression for DS-UWB systems","authors":"P. Clarke, R. D. Lamare","doi":"10.1109/ISWCS.2009.5285350","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285350","url":null,"abstract":"In this work, we propose a novel combined set-membership (SM) reduced-rank interference suppression scheme and consider its application to spread-spectrum multiuser direct sequence ultra-wideband (DS-UWB) systems. In the proposed scheme, the theory of set-membership filtering is applied to the training-based powers of R (PoR) multi-stage Wiener filter (MSWF) reduced-rank process and the reduced-rank filter adaptation. We exploit the variable update rates associated with the set-membership framework so that the dimensionality reducing projection matrix and the reduced-rank filter are updated independently, and only when the estimation error at the output of each process exceeds a predefined, non-time-varying bound. Normalized least mean squares (NLMS) and Bounding Ellipsoidal Adaptive Constrained Least-Squares (BEACON) algorithms are then developed and an analysis of their complexity given. Computer simulations show that the interference suppression performance exhibited by the proposed algorithms exceed that of the conventional reduced-rank NLMS and RLS algorithms whilst achieving a significant reduction in computational complexity.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121771289","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

Application-specific node clustering of IR-UWB sensor networks with two classes of nodes 具有两类节点的IR-UWB传感器网络应用节点聚类

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285338

D. Bielefeld, G. Fabeck, R. Mathar

引用次数: 0

Long life monitoring of historical monuments via Wireless Sensors Network 利用无线传感器网络对历史遗迹进行长寿命监测

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285215

D. Abruzzese, M. Angelaccio, B. Buttarazzi, Romeo Giuliano, L. Miccoli, A. Vari

引用次数: 16

On IEEE EDCA 802.11n 支持IEEE EDCA 802.11n

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285229

R. Hoefel

引用次数: 5

Achievable rate of dual-hop OFDM relay system with non-regenerative relay without FFT process 无FFT处理的非再生中继双跳OFDM中继系统的可实现速率

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285322

Shuhei Haraguchi, M. Saito, C. Athaudage, M. Okada

引用次数: 3

Cell outage management in LTE networks LTE网络中的小区中断管理

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285232

M. Amirijoo, L. Jorguseski, T. Kürner, R. Litjens, M. Neuland, L. Schmelz, U. Türke

引用次数: 88

Multi-criteria dynamic access selection in heterogeneous wireless networks 异构无线网络中的多准则动态接入选择

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285287

I. Smaoui, F. Zarai, R. Bouallègue, L. Kamoun

{"title":"Multi-criteria dynamic access selection in heterogeneous wireless networks","authors":"I. Smaoui, F. Zarai, R. Bouallègue, L. Kamoun","doi":"10.1109/ISWCS.2009.5285287","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285287","url":null,"abstract":"Service delivery in a heterogeneous wireless network environment requires the selection of an optimal access network. Indeed, the selection of a non-optimal network can result in undesirable effects such as higher costs in terms of new call blocking and handoff call dropping rates or poor service experience. Network selection in such an environment is influenced by several factors related to network conditions, application parameters, user preferences and terminal performances. This paper, first, describes a new architecture which allows a resource-efficient management that aims at selecting the “best-suited” network interface for each application. Second, it presents a comprehensive decision making process to rank candidate networks for service delivery to the application. The proposed scheme is based on a decision process using the TOPSIS method when solving the multi criteria analysis. The wireless networks in this model represent the alternatives, while the network and application parameters (bandwidth, Received Signal Strength, velocity support, load factor and power consumption cost) are considered as the criteria for determining the optimal network.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127935073","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: 23

Quasi-convex designs of max-min linear BC precoding with outage QoS constraints 具有中断QoS约束的最大最小线性BC预编码的拟凸设计

2009 6th International Symposium on Wireless Communication Systems Pub Date : 2009-09-07 DOI: 10.1109/ISWCS.2009.5285275

M. B. Shenouda, L. Lampe

{"title":"Quasi-convex designs of max-min linear BC precoding with outage QoS constraints","authors":"M. B. Shenouda, L. Lampe","doi":"10.1109/ISWCS.2009.5285275","DOIUrl":"https://doi.org/10.1109/ISWCS.2009.5285275","url":null,"abstract":"We consider a broadcast channel (BC) in which the base station is equipped with multiple antennas and each user has a single antenna. We study the design of systems with linear precoders and probabilistically-constrained Quality of Service (QoS) requirements for each user, in scenarios with imperfect channel state information (CSI) at the transmitter. Each user's QoS is expressed as an upper bound on the outage probability of the received signal-to-interference-plus-noise ratio. Given a total power constraint on the transmitter, we consider the design of a linear precoder so as to maximize the minimum QoS requirement of all users. We propose stochastic models for the uncertainty in the CSI of each user that are suitable for uncertainties resulting from estimation errors, and those resulting from quantization errors in systems with quantized feedback of the CSI. We formulate the design problem as a chance constrained optimization problem, and we adopt a conservative approach that yields deterministic quasi-convex formulations that are efficiently-solvable. Our simulations indicate that the proposed methods can significantly increase the minimum QoS of all users when the QoS requirements are formulated as outage constraints.","PeriodicalId":344018,"journal":{"name":"2009 6th International Symposium on Wireless Communication Systems","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132749305","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