2011 8th International Symposium on Wireless Communication Systems最新文献_第3页

Combined zeroforcing with wideband beamforming for interference mitigation in cooperative cellular radio networks 联合零强迫与宽带波束形成在协同蜂窝无线网络中的干扰抑制

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125365

Wolfgang Mennerich, W. Zirwas

引用次数: 2

Modeling of X-pol antennas for LTE system simulation 面向LTE系统仿真的X-pol天线建模

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125342

A. Weber, Antoni Bestard

引用次数: 4

Outage performance for opportunistic decode-and-forward relaying coded cooperation networks over Nakagami-m fading Nakagami-m衰落下的机会性译码转发中继编码合作网络的中断性能

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125395

Hoc Phan, T. Duong, H. Zepernick

引用次数: 1

Sum-rate analysis of the two-way relay channel in spectrum-sharing environments 频谱共享环境下双向中继信道的和速率分析

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125318

Najmeh Madani

引用次数: 0

Mobility robustness optimization beyond Doppler effect and WSS assumption 超越多普勒效应和WSS假设的迁移性鲁棒性优化

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125335

I. Viering, B. Wegmann, Andreas Lobinger, A. Awada, H. Martikainen

引用次数: 28

Retarding application idle timer expiration for service resumption in challenged network 延迟应用程序空闲定时器到期，以便在有问题的网络中恢复业务

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125433

H. Izumikawa, T. Matsunaka, Y. Kishi

{"title":"Retarding application idle timer expiration for service resumption in challenged network","authors":"H. Izumikawa, T. Matsunaka, Y. Kishi","doi":"10.1109/ISWCS.2011.6125433","DOIUrl":"https://doi.org/10.1109/ISWCS.2011.6125433","url":null,"abstract":"In challenged network environments like tunnels, a mobile node can suffer from a sudden disruption in mobile services, e.g., the abrupt ending of an application session, due to factors like coverage holes. To tackle this issue, there is an approach that provides tolerance for disruptions or disconnections in the network architecture, in which proxy functions in the network and the mobile node conceal the disruption of the wireless link from users and application servers. After the wireless link is re-established, the services the user enjoys are resumed. However, even if such a disruption-tolerant function avoids the direct negative effects of a disruption, i.e., the sudden end of an application session, the services could still end due to an application idle timer. In this paper, we propose a dynamic buffering method, named application idle timer retardation buffering (ARB), to deal with the application idle timeout issue. The proxy function in a mobile node has a buffer for incoming data from the network and queues data for only a brief moment before forwarding it to an application. When link connectivity is lost, the proxy function forwards queued data to the end-user application at a very low rate in order to delay application idle timer expiration by repeatedly resetting the timer. We implemented ARB in PCs and conducted field tests. The results of the ARB field test indicate that ARB maintains continuity despite communication interruptions as much as eleven times longer than could be handled without it, without throughput degradation.","PeriodicalId":414065,"journal":{"name":"2011 8th International Symposium on Wireless Communication Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128483903","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

Distributed sensing of a slowly time-varying sparse spectrum using matrix completion 使用矩阵补全的慢时变稀疏频谱的分布式感知

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125371

S. Corroy, Andreas Bollig, R. Mathar

引用次数: 7

Gain design and power allocation for overloaded MIMO-OFDM systems with channel state information and iterative multiuser detection 基于信道状态信息和迭代多用户检测的MIMO-OFDM系统的增益设计与功率分配

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125452

P. Rossi, G. Romano, D. Ciuonzo, F. Palmieri

引用次数: 5

Performance evaluation of multi-traffic on wireless sensor networks using a novel Diffserv mechanism

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125387

Shunfu Jin, Wuyi Yue

{"title":"Performance evaluation of multi-traffic on wireless sensor networks using a novel Diffserv mechanism","authors":"Shunfu Jin, Wuyi Yue","doi":"10.1109/ISWCS.2011.6125387","DOIUrl":"https://doi.org/10.1109/ISWCS.2011.6125387","url":null,"abstract":"In this paper, we propose a novel DiffServ mechanism for multi-traffic Wireless Sensor Networks (M-WSNs) supporting real-time traffic and non-real-time traffic simultaneously. This mechanism will reduce the average transmission time of the real-time traffic and improve the transmission reliability of the non-real-time traffic when one cluster transmits its packets to the next cluster. The packets of the non-real-time traffic will be queueing at a finite buffer of the cluster to be transmitted following a First-Come First-Serve (FCFS) strategy. The packets of the real-time traffic will immediately occupy the channel between two adjacent clusters preemptively and will be transmitted without queueing if there is no other packet of realtime traffic being transmitted. A discrete-time queueing model with two classes of traffic is built with a finite cluster capacity in order to describe the working principle of the novel DiffServ mechanism. By using the method of a two-dimensional Markov chain, the formulas for the performance measures in terms of drop rate, average response time, system throughput and energy saving ratio are given. Finally, numerical results are given to demonstrate the influence of the system parameters on the system performance.","PeriodicalId":414065,"journal":{"name":"2011 8th International Symposium on Wireless Communication Systems","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127777004","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

Investigations on cooperative transmission for the multiple access relay channel 多址中继信道协同传输研究

2011 8th International Symposium on Wireless Communication Systems Pub Date : 2011-11-01 DOI: 10.1109/ISWCS.2011.6125424

A. Angierski, S. Schedler, V. Kühn

{"title":"Investigations on cooperative transmission for the multiple access relay channel","authors":"A. Angierski, S. Schedler, V. Kühn","doi":"10.1109/ISWCS.2011.6125424","DOIUrl":"https://doi.org/10.1109/ISWCS.2011.6125424","url":null,"abstract":"In the past decade network coding has become a broad research area. Since the benefit of relays is well-known they have been considered within countless studies. Furthermore, it seems to be widely accepted that user cooperation promises a huge benefit. This paper considers a two-user relay network with a TDMA structure. Several cooperative and non-cooperative transmission schemes are analyzed. The cooperative ones will process the incoming information from several users at the relay jointly before forwarding it to the destination. The relay is restricted to forward information in just one time slot. Thus, it can either forward a subset of the received information or it has to change the coded modulation scheme by increasing the code rate or choosing a larger modulation alphabet. Using numerical simulations, five different strategies are analyzed. It will be illustrated that the performance of cooperative schemes deteriorates significantly when the relay is not able to decode successfully. Especially in asymmetric scenarios, the gains obtained by cooperation for the weaker user are much less than the corresponding losses of the stronger user so that the overall system performance degrades.","PeriodicalId":414065,"journal":{"name":"2011 8th International Symposium on Wireless Communication Systems","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127787258","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: 0