2008 IEEE International Symposium on Wireless Communication Systems最新文献_第5页

Modeling and analysis of IEEE 802.16 PKM Protocols using CasperFDR 基于CasperFDR的IEEE 802.16 PKM协议建模与分析

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726137

Sen Xu, Chin-Tser Huang, M. Matthews

引用次数: 24

Performance evaluation of UHF RFID technologies for real-time passenger tracking in intelligent public transportation systems 智能公共交通系统中超高频RFID实时乘客跟踪技术的性能评估

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726028

C. Oberli, D. Landau

{"title":"Performance evaluation of UHF RFID technologies for real-time passenger tracking in intelligent public transportation systems","authors":"C. Oberli, D. Landau","doi":"10.1109/ISWCS.2008.4726028","DOIUrl":"https://doi.org/10.1109/ISWCS.2008.4726028","url":null,"abstract":"Passenger counting is an important task for intelligent public transportation system¿s planning and operation. However, traditional counting systems can¿t identify individual passengers. The access to this additional capacity would allow collecting historical statistics on each passenger¿s transportation needs, hence enabling a substantially enhanced optimization in these systems. With this purpose, this work proposes a passenger counting and identification method through radio frequency identification technologies (RFID). Forty individuals are involved in measurements carrying EPC Gen2 tags in their backpacks, wallets, pocket and hand, passing through a portal with a similar size as a bus door. Conditions of one and two rows of persons walking through the portal are evaluated. This portal is equipped with 4 reading antennas. Cards that have a single EPC Gen2 tag and cards with both a Mifare and a UHF EPC Gen2 tag are used. Card reading statistics for all the combinations of 1, 2, 3 and 4 antennas are presented in this paper. The passenger detection percentage at the portal with two properly located antennas has an average of 82% for dual-band cards and 91% for single-band cards. When four antennas are used, there is an additional increase of 2% in the detection percentage for both types of cards.","PeriodicalId":158650,"journal":{"name":"2008 IEEE International Symposium on Wireless Communication Systems","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133680254","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: 9

Uplink capacity of MIMO cellular systems with multicell processing 多小区处理MIMO小区系统的上行容量

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726097

S. Chatzinotas, M. Imran, C. Tzaras

{"title":"Uplink capacity of MIMO cellular systems with multicell processing","authors":"S. Chatzinotas, M. Imran, C. Tzaras","doi":"10.1109/ISWCS.2008.4726097","DOIUrl":"https://doi.org/10.1109/ISWCS.2008.4726097","url":null,"abstract":"Multiple antennas are known to increase the link throughput by providing a multiplexing gain which scales with the number of antennas. Especially in cellular systems, multiple antennas can be exploited to achieve higher rates without the need for additional base station (BS) sites. In this direction, this paper investigates the multi-antenna capacity scaling in a cellular system which employs multicell processing (hyper-receiver). The model under investigation is a MIMO Gaussian cellular multiple-access channel (GCMAC) over a planar cellular array in the presence of power-law path loss and flat fading. Furthermore, the considered cellular model overcomes the assumption of user collocation utilized by previous models by incorporating uniformly distributed user terminals (UTs). The asymptotic eigenvalue distribution (a.e.d.) of the covariance channel matrix is calculated based on free-probabilistic arguments. In this context, we evaluate the effect of multiple BS/UT antennas on the optimal sum-rate capacity by considering a variable-density cellular system. Finally, the analytical results are interpreted in the context of a typical real-world macrocellular scenario.","PeriodicalId":158650,"journal":{"name":"2008 IEEE International Symposium on Wireless Communication Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134287809","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: 12

Two-level-search sphere decoding algorithm for MIMO detection MIMO检测的两级搜索球解码算法

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726096

Trong-Anh Huynh, D. Hoang, M. Islam, Jinsang Kim

{"title":"Two-level-search sphere decoding algorithm for MIMO detection","authors":"Trong-Anh Huynh, D. Hoang, M. Islam, Jinsang Kim","doi":"10.1109/ISWCS.2008.4726096","DOIUrl":"https://doi.org/10.1109/ISWCS.2008.4726096","url":null,"abstract":"Breadth-first search sphere decoding (SD) is considered as one of the most promising methods for multiple-input multiple-output (MIMO) detection due to its low computational complexity, capability of providing fixed throughput and pipelining features. However, the performance of the conventional breadth-first search SD is significantly degraded if the number of candidate symbols kept at each level of the tree search is not sufficiently large. To solve this problem, we present a novel two-level-search sphere decoding algorithm for MIMO systems. In our proposed algorithm, symbol detection is concurrently performed on two levels of the tree search, and the search space is extended to find good candidate symbols. The use of simultaneous two-level search is to greatly reduce the possibility of discarding good candidates at early stages. Compared to the traditional breadth-first search SD algorithm, our approach provides a performance gain of about 2.5 dB at a bit-error-rate (BER) of 10-4. Our work also exhibits a low computational complexity in term of the number of multiplications. Furthermore, we also discuss some VLSI implementation aspects of the proposed algorithm for practical applications.","PeriodicalId":158650,"journal":{"name":"2008 IEEE International Symposium on Wireless Communication Systems","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134313445","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: 11

Using efficient backlog estimation to achieve near-optimal throughput for integrated multimedia wireless cellular access 利用高效的积压估计实现集成多媒体无线蜂窝接入的接近最优吞吐量

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726079

Luc Gadbois, P. Koutsakis

引用次数: 0

Effective prediction scheme for bandwidth allocation in interactive satellite terminals 交互式卫星终端带宽分配的有效预测方案

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726075

P. Pace, G. Aloi

引用次数: 6

Turbo-like synchronization for UWB-IR links UWB-IR链路的涡轮式同步

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726108

M. Biagi, E. Baccarelli, C. Pelizzoni, N. Cordeschi, Irene Salas Arzola

引用次数: 3

Suitability of RSRQ measurement for quality based inter-frequency handover in LTE LTE中基于质量的频间切换RSRQ测量的适用性

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726147

J. Kurjenniemi, T. Henttonen, J. Kaikkonen

引用次数: 30

Link adaptation with combined optimal frame size and rate selection in error-prone 802.11n networks 在易出错的802.11n网络中，结合最优帧大小和速率选择的链路自适应

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726153

Xin He, F. Li, Jiaru Lin

引用次数: 32

On the influence of a CDMA cellular repeater in the capacity of a donor base station CDMA蜂窝中继器对供体基站容量的影响

2008 IEEE International Symposium on Wireless Communication Systems Pub Date : 2008-12-30 DOI: 10.1109/ISWCS.2008.4726021

Marcos Antonio Neves, R. Souza

引用次数: 4