2012 International Symposium on Wireless Communication Systems (ISWCS)最新文献_第7页

Reliable layered multi-cast with source diversity and inter-source network decoding in wireless mesh networks 无线网状网络中具有信源分集和信源间译码的可靠分层多播

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328476

S. Tarnoi, W. Kumwilaisak

{"title":"Reliable layered multi-cast with source diversity and inter-source network decoding in wireless mesh networks","authors":"S. Tarnoi, W. Kumwilaisak","doi":"10.1109/ISWCS.2012.6328476","DOIUrl":"https://doi.org/10.1109/ISWCS.2012.6328476","url":null,"abstract":"This paper presents a reliable layered multi-cast with source diversity and inter-source network decoding in wireless mesh networks. The source diversity technique gives path diversity providing a better throughput for layered transmission under hostile environment. For each source, an optimization formulation is set up to find the best transmission route of each transmitting layer. The objectives of the formulation are to maximize a number of transmitting layers and transmission reliability. The source providing the best overall throughput is selected to be the primary source, while the rest will be secondary sources. When the Quality-of-Service (QoS) guarantee of some transmitting layers cannot be fulfilled by the primary source, the secondary source with the best QoS parameters is selected to transmit the layer to destinations. The number of secondary sources used for transmissions is increased until the QoS guarantees of all transmitting layers are satisfied or all network resources are utilized. Network coding is deployed to multi-cast layers from the same source for efficient resource usage. Network coding data from different sources can be used together to decode the transmitting data. In other words, at each destination, it needs only a sufficient number of packets from different sources to recover all transmitting data. Simulations with different network topologies show the improvement in throughput and QoS guarantees of layered multi-cast under wireless lossy environment.","PeriodicalId":167119,"journal":{"name":"2012 International Symposium on Wireless Communication Systems (ISWCS)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131682160","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

The golden code in asynchronous distributed networks with relay selection 带中继选择的异步分布式网络中的黄金码

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328458

L. Ge, Gaojie Chen, J. Chambers

引用次数: 2

Evaluation of blind sensing algorithms in the 2.4 GHz ISM-band on GNU radio and USRP2 2.4 GHz ism波段盲感知算法在GNU无线电和USRP2上的评估

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328428

Christian Weber, G. Hildebrandt

引用次数: 8

Perfect versus imperfect interference alignment using multiple MIMO relays 使用多个MIMO继电器进行完美或不完美的干扰对准

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328453

Hussein Al-Shatri, R. S. Ganesan, A. Klein, T. Weber

{"title":"Perfect versus imperfect interference alignment using multiple MIMO relays","authors":"Hussein Al-Shatri, R. S. Ganesan, A. Klein, T. Weber","doi":"10.1109/ISWCS.2012.6328453","DOIUrl":"https://doi.org/10.1109/ISWCS.2012.6328453","url":null,"abstract":"Interference alignment is a promising approach to handle the interference in mobile radio networks especially at high SNR. In the present paper, the interference alignment is achieved using a number of MIMO relays in a scenario with K single antenna node pairs. A two-phase transmission scheme is considered assuming the channel to be constant during the transmission phases. Firstly, the source nodes transmit to both the relays and the destination nodes. Secondly, the source nodes and the relays retransmit to the destination nodes. By adapting the relays' processing matrices to the channel while fixing the nodes' filters, a linear system of equations is formulated which is solved for the interference alignment. The interference signals can be aligned perfectly at the destination nodes if there are enough relays. A closed-form solution with minimum retransmit energy at the relays is selected if the linear system of equations is under-determined. If the system of linear equations has no solution, i.e., if there are not enough relays, least squares based solutions are employed which minimize the total received interference. The results show that K/2 degrees of freedom are achieved if the interference signals are aligned perfectly. Furthermore, aligning the interference signals imperfectly achieves a capacity-gain over perfect interference alignment at low and moderate SNRs while requiring a lower number of relays.","PeriodicalId":167119,"journal":{"name":"2012 International Symposium on Wireless Communication Systems (ISWCS)","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113968690","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: 3

Signal separation and classification algorithm for cognitive radio networks 认知无线网络的信号分离与分类算法

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328378

Wael Guibène, D. Slock

引用次数: 7

Comparison on DTV affected range by difference of secondary user bandwidth in adjacent channel 相邻信道中二次用户带宽差异对数字电视影响范围的比较

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328337

Heejoong Kim, H. Sunahara, A. Kato

引用次数: 3

Multi-level modeling of spectrum use 频谱使用的多级建模

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328334

Mihajlo Pavloski, V. Rakovic, V. Atanasovski, L. Gavrilovska

引用次数: 1

Uplink non-orthogonal access with MMSE-SIC in the presence of inter-cell interference 存在小区间干扰的MMSE-SIC上行非正交接入

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328370

Yuki Endo, Y. Kishiyama, K. Higuchi

{"title":"Uplink non-orthogonal access with MMSE-SIC in the presence of inter-cell interference","authors":"Yuki Endo, Y. Kishiyama, K. Higuchi","doi":"10.1109/ISWCS.2012.6328370","DOIUrl":"https://doi.org/10.1109/ISWCS.2012.6328370","url":null,"abstract":"This paper investigates the system-level throughput performance of non-orthogonal access with minimum mean squared error-based linear filtering followed by a successive interference canceller (MMSE-SIC) in the cellular uplink. Although non-orthogonal access employing the MMSE-SIC achieves the entire region of the multiuser capacity in a multiple access channel (MAC), which should be beneficial in enhancing the total user throughput and cell-edge user throughput simultaneously compared to orthogonal access, the multiplexing of multiple users within the same frequency block increases the inter-cell interference in the context of the cellular uplink. The aim of the transmission power control method investigated in this paper is to mitigate the inter-cell interference increase due to non-orthogonal user multiplexing. We employ a weighted proportional fair (PF)-based multiuser scheduling scheme to achieve a good tradeoff between the total user throughput and cell-edge user throughput. Simulation results show that non-orthogonal access employing the MMSE-SIC using the proposed transmission power control significantly enhances the system-level throughput performance compared to orthogonal access, which is widely used in 3.9 and 4G mobile communication systems.","PeriodicalId":167119,"journal":{"name":"2012 International Symposium on Wireless Communication Systems (ISWCS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128103994","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: 92

Compute-and-forward on wireless lattice networks with local interference 具有局部干扰的无线点阵网络的计算转发

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328374

J. Goseling, J. Weber, M. Gastpar

引用次数: 1

An analytical closed-form lower-bound on ergodic capacity of correlated Rayleigh-fading MIMO channels 相关瑞利衰落MIMO信道遍历容量的解析闭型下界

2012 International Symposium on Wireless Communication Systems (ISWCS) Pub Date : 2012-10-25 DOI: 10.1109/ISWCS.2012.6328454

A. A. P. Guimarães, C. Cavalcante

引用次数: 2