2011 Third International Workshop on Cross Layer Design最新文献_第2页

Packet scheduling and resource allocation for downlink multicarrier systems with quality-of-service constraints 具有服务质量约束的下行多载波系统的分组调度和资源分配

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123082

Qing Bai, Yao Hao, J. Nossek

引用次数: 3

A new cross-layer design strategy for TV White Space Cognitive Radio applications 一种新的电视空白空间认知无线电跨层设计策略

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123084

James H. Martin, L. Dooley, K. Wong

{"title":"A new cross-layer design strategy for TV White Space Cognitive Radio applications","authors":"James H. Martin, L. Dooley, K. Wong","doi":"10.1109/IWCLD.2011.6123084","DOIUrl":"https://doi.org/10.1109/IWCLD.2011.6123084","url":null,"abstract":"Conventional single layer processing in Cognitive Radio Networks (CRN) can incur significant time costs in transferring information between the various layers of the Open System Interconnection (OSI) model, due its innate sequential structure. This is especially a problem for CRN which usually only has a narrow time window to access spectral gaps of either licensed or other secondary users (SU). To exploit this opportunity, cross layer processing (CLP) paradigms that share information between OSI layers and the radio system have been proposed to maximise throughput for SU, while maintaining Quality of Service (QoS) provision to the licensed primary user. With the global transference of TV systems to digital platforms, regulatory bodies have identified an opportunity to allocate additional digital TV (DTV) channels to CRNs on a localised basis, in what is called TV White Space (TVWS). This paper investigates how CLP of information can be effectively exploited to enhance CRN system performance by making key channel allocations to minimise disruption to the spectrum environment, while maximising available resources to fulfil application and network requirements within TVWS.","PeriodicalId":149596,"journal":{"name":"2011 Third International Workshop on Cross Layer Design","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130032105","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

Resource allocation for QoS aware relay-assisted OFDMA cellular networks QoS感知中继辅助OFDMA蜂窝网络的资源分配

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123076

Mohamad Maaz, P. Mary, M. Hélard

引用次数: 4

Performance computation of cross-layer Hybrid ARQ schemes at IP layer in the presence of corrupted acknowledgments IP层存在损坏应答时跨层混合ARQ方案的性能计算

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123075

Sébastien Marcille, P. Ciblat, C. L. Le Martret

引用次数: 9

Efficient architecture design for mobile sensor networks 移动传感器网络的高效架构设计

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123089

Nabih Alaoui, J. Cances, V. Meghdadi

引用次数: 3

Open service access in cross layer design 跨层设计开放业务接入

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123088

I. Atanasov, D. Marinska, E. Pencheva

引用次数: 1

Radio resource allocation for cooperative relay-assisted OFDMA wireless networks 协作中继辅助OFDMA无线网络的无线电资源分配

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123068

Zheng Chang, T. Ristaniemi

引用次数: 5

Generalised link-layer optimisation: Application and performance evaluation 广义链路层优化:应用和性能评估

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123087

V. Rodriguez

{"title":"Generalised link-layer optimisation: Application and performance evaluation","authors":"V. Rodriguez","doi":"10.1109/IWCLD.2011.6123087","DOIUrl":"https://doi.org/10.1109/IWCLD.2011.6123087","url":null,"abstract":"A wireless communication system work more efficiently if link-layer parameters such as modulation order, symbol rate and packet size are (adaptively) optimised. A common criterion is to maximise spectral efficiency subject to a very low bit-error constraint. But for systems equipped with strong error detection and a selective packet re-transmission mechanism, a packet-oriented criterion is more appropriate. Recently we showed that the link configuration that maximises bits per second or bits per Joule can be identified by drawing a tangent from the origin to the scaled graphs of the corresponding packet-success rate functions: the steeper the tangent the better the configuration. We now consider a tight symbol-rate constraint that forces the terminal to switch its configuration from the ideal as channel quality improves, and report on analytically-grounded performance experiments. A terminal with a flexible and unconstrained symbol rate enjoys a growing and overwhelming performance advantage over a similarly-endowed fixed-rate adaptive terminal. And the rate-flexible terminal retains a significant performance edge (up to 2-to-1) even when its symbol rate cannot exceed that of the fixed-rate terminal.","PeriodicalId":149596,"journal":{"name":"2011 Third International Workshop on Cross Layer Design","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130544592","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

SAFH - Smooth Adaptive Frequency Hopping 平滑自适应跳频

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123078

Sami Ben Cheikh, Tim Esemann, H. Hellbruck

{"title":"SAFH - Smooth Adaptive Frequency Hopping","authors":"Sami Ben Cheikh, Tim Esemann, H. Hellbruck","doi":"10.1109/IWCLD.2011.6123078","DOIUrl":"https://doi.org/10.1109/IWCLD.2011.6123078","url":null,"abstract":"Wireless systems based on WLAN (802.11), ZigBee (802.15.4) and Bluetooth (802.15.1) are continuously deployed in new applications covering consumer, industry or medical fields. Especially, Bluetooth is recommended by the Health-Care-Organization for medical applications as frequency hopping is considered as a robust scheme. However dealing with frequency-dynamic sources of interference in the 2.4GHz ISM band is important due to the increase of wireless devices. Adaptive frequency hopping (AFH) suggested by the Bluetooth standard and implemented in many of todays products identifies and avoids using bad channels. It is a good and established coexistence mechanism in the presence of frequency-static sources of interference such as WLANs when the 2.4GHz band is not crowded. However, AFH is facing problems in a crowded 2.4GHz band, especially when the interference is dynamic. We developed a cross-layer algorithm SAFH (Smooth Adaptive Frequency Hopping) that is inspired by entropy maximization and the conventional Bluetooth AFH. SAFH assigns usage probabilities to all channels based on an exponential smoothing filter for frame error rates to estimate and predict the channel conditions. The application layer can adapt SAFH by parameter settings in a cross-layer approach. SAFH achieves low average frame error rate and responds fast to changing channel conditions if required from the application. Simulative Evaluation in the presence of different types of interference (802.11b, 802.15.4 and 802.15.1) shows that our algorithm outperforms conventional frequency hopping and AFH. Additionally, SAFH works smoothly and stable exploiting frequency diversity compared to previous approaches like entropy-maximization based adaptive frequency hopping and Utility Based Adaptive Frequency Hopping (UBAFH).","PeriodicalId":149596,"journal":{"name":"2011 Third International Workshop on Cross Layer Design","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116404469","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: 18

Robust resource management for energy efficient cellular networks 高效节能蜂窝网络的鲁棒资源管理

2011 Third International Workshop on Cross Layer Design Pub Date : 2011-11-01 DOI: 10.1109/IWCLD.2011.6123090

D. Quintas, V. Friderikos

引用次数: 0