GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference最新文献_第7页

Near-ML Detection over a Reduced Dimension Hypersphere 降维超球上的近ml检测

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426075

J. Choi, B. Shim, A. Singer

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引用次数: 0

Low-Complexity Near-Optimal Presence Detection of a Linearly Modulated Signal 线性调制信号的低复杂度近最优存在检测

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425807

Jeong Ho Yeo, Joon Ho Cho

引用次数: 0

Tradeoff Power Control for Cellular Systems 蜂窝系统的权衡功率控制

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426096

Changho Suh, A. Koç, S. Talwar

引用次数: 4

Analysis of Degrees of Freedom of Interfering MISO Broadcast Channels 干扰MISO广播信道的自由度分析

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425520

Seokhwan Park, Inkyu Lee

{"title":"Analysis of Degrees of Freedom of Interfering MISO Broadcast Channels","authors":"Seokhwan Park, Inkyu Lee","doi":"10.1109/GLOCOM.2009.5425520","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5425520","url":null,"abstract":"In this paper, we provide a lower and upper bound for the number of degrees of freedom (DOF) of B multiple-input single-output (MISO) broadcast channels (BC) where each base station (BS) equipped with M antennas supports its corresponding K single antenna users suffering from inter-cell interference. We show that two bounds meet with each other when M = 1 or M ≥ K or B >max(M,K)/min(M,K). From the derived result, we learn that the available DOF of the B-user multiple-input multiple-output (MIMO) interference channels is degraded by disabling receive cooperation if and only if M < K and B ≤ max(M,K)/min(M,K). We observe that even for that case, the multiple BCs where interference mitigation should be fully performed at the transmitters due to the distributed receive antennas can achieve the DOF more than 2/3 of the DOF of the MIMO interference channels. In addition, the exact number of DOF is derived for two mutually interfering and deterministic broadcast channels in the presence of cognitive BSs. Our result shows that in two BCs interfering with each other, whether receive cooperation exists or not, it does not affect the DOF if one of two transmitters is a cognitive BS.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123311281","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: 14

Hybrid Video-Quality-Estimation Model for IPTV Services IPTV业务混合视频质量估计模型

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425823

Kazuhisa Yamagishi, Taichi Kawano, Takanori Hayashi

引用次数: 28

Erlang Capacity of UMTS Using Perceptual-Based Power Control: An Analytical Framework 使用基于感知的功率控制的UMTS的Erlang容量:一个分析框架

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425670

B. Rohani, H. Zepernick

引用次数: 0

On Study of Achievable Capacity with Hybrid Relay in Cognitive Radio Networks 认知无线网络中混合中继可达容量的研究

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425814

Lei Sun, Wenye Wang

{"title":"On Study of Achievable Capacity with Hybrid Relay in Cognitive Radio Networks","authors":"Lei Sun, Wenye Wang","doi":"10.1109/GLOCOM.2009.5425814","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5425814","url":null,"abstract":"This work studies the capacity limits of Cognitive Radio (CR) networks with a hybrid relay scheme in which PRimary (PR) nodes dominate the spectrum usage, while coordinating with secondary or CR nodes in forwarding packets. This is in contrast to previous efforts that are focused on the analysis with cooperative relay scheme where only secondary (CR) nodes participate in relay operation [1]-[3]. Intuitively, it is expected that the hybrid scheme can improve network capacity because primary nodes have higher power and transmission capacity compared to CR nodes and data transmission with hybrid relay scheme can be much faster and more reliable. Therefore, we aim to investigate such potential benefits with respect to cooperative relay. However, we find that given the total data rate W, number of usable channels ||C|| and the number of CR nodes n in a network, the achievable capacity of CR networks with hybrid relay is of the order of Θ(W/||C||n). This result is much lower than the capacity of cooperative relay, which is of the same order as the capacity of multi-channel wireless networks (e.g., multi-channel multi-radio (MC-MR) networks), Θ(W1/√n log n). It is plausible that PR nodes can potentially become bottlenecks when they are used as high-priority relay nodes in the hybrid scheme. Thus, our study suggests that for delay-sensitive applications such as realtime traffic, hybrid relay is a good option; otherwise, cooperative relay is preferred.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121134603","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

Iterative Versus Adaptive Equalizers in Time-Variant Channels 时变信道中的迭代与自适应均衡器

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425660

Clemens Buchacher, J. Wehinger, M. Huemer

引用次数: 3

EXIT Chart Evaluation of a Receiver Structure for Multi-User Multi-Antenna OFDM Systems 多用户多天线OFDM系统接收机结构的出口图评估

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5426288

P. Hammarberg, F. Rusek, P. Rossi, O. Edfors

{"title":"EXIT Chart Evaluation of a Receiver Structure for Multi-User Multi-Antenna OFDM Systems","authors":"P. Hammarberg, F. Rusek, P. Rossi, O. Edfors","doi":"10.1109/GLOCOM.2009.5426288","DOIUrl":"https://doi.org/10.1109/GLOCOM.2009.5426288","url":null,"abstract":"In this paper we evaluate, by means of Extrinsic Information Transfer (EXIT) charts, an iterative receiver that has emerged as a promising candidate for non-coherent multi-user multi-antenna OFDM systems. The receiver performs parallel interference cancellation (followed by linear filtering) and channel estimation, using soft symbols obtained from a bank of single-user decoders. For the sake of conceptual clarity we study a system with two single antenna users and a receiver with two antennas, and we demonstrate how the convergence behavior of the receiver can be visualized using paired three dimensional EXIT surfaces. Our results show that the actual decoder trajectories obtained through simulations are well predicted from the EXIT charts. \u0000 \u0000For the iterative receiver under investigation we identify a very specific problem with EXIT chart generation; the EXIT curve for the inner component decoder depends on the outer encoder. To handle this problem we propose a modification to the iterative receiver which solves the aforementioned problem; the performance degradation is demonstrated to be small.","PeriodicalId":405624,"journal":{"name":"GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116318759","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

An Evolutionary Game Approach to P2P Video Streaming P2P视频流的进化博弈方法

GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference Pub Date : 2009-11-30 DOI: 10.1109/GLOCOM.2009.5425512

L. Chisci, F. Papi, T. Pecorella, R. Fantacci

引用次数: 11