2013 IEEE Global Communications Conference (GLOBECOM)最新文献

Performance of switch-and-examine DF relay systems with CCI at the relays and destination over Rayleigh fading channels 瑞利衰落信道中继站和目的站CCI开关检测DF中继系统的性能

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2014-07-01 DOI: 10.1109/TVT.2013.2292899

A. Salhab, S. Zummo

{"title":"Performance of switch-and-examine DF relay systems with CCI at the relays and destination over Rayleigh fading channels","authors":"A. Salhab, S. Zummo","doi":"10.1109/TVT.2013.2292899","DOIUrl":"https://doi.org/10.1109/TVT.2013.2292899","url":null,"abstract":"In this paper, we evaluate the outage performance of a decode-and-forward (DF) relay system with a low-complexity relay selection schemes in the presence of interference at the relays and destination. The schemes are mainly based on the switch-and-examine diversity combining (SEC) and SEC with post-examine selection (SECps) techniques in which a relay whose second hop signal-to-noise ratio (SNR) satisfies a predetermined switching threshold is selected instead of the best relay to forward the source message to destination. In this paper, we first derive the probability density function (PDF) of the SNR of the relay selection scheme and the conditional cumulative distribution function (CDF) of the end-to-end (e2e) signal-to-interference plus noise ratio (SINR) assuming Rayleigh fading channels. The derived statistics along with the statistics of first hop channels of the relays and the direct link are then used to derive a closed-form expression for the e2e outage probability. We assume that maximal-ratio combining (MRC) is used at the destination to combine the signals of relay and the direct link. Furthermore, to get more about system insights, the outage performance is studied at high SNR regime. Monte-Carlo simulations are provided to validate the derived analytical and asymptotic expressions. Main results illustrate that when the interference power does not scale with SNR, the system can still achieve diversity gain, especially, at SNR values that are comparable to the switching threshold. Asymptotic results show that at high SNR values, the system with the SEC and SECps relaying schemes has a diversity order of 2 and approximately the same coding gain.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126707883","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: 6

Distributed switch-and-stay combining in cognitive relay networks under spectrum sharing constraints 频谱共享约束下认知中继网络的分布式开停组合

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-14 DOI: 10.1109/GLOCOM.2013.6831356

Vo Nguyen Quoc Bao, T. Duong, A. Nallanathan, G. Karagiannidis

引用次数: 8

Two-way cognitive relay networks with multiple licensed users 具有多个许可用户的双向认知中继网络

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-13 DOI: 10.1109/GLOCOM.2013.6831203

K. Kim, T. Duong, M. Elkashlan, Phee Lep Yeoh, A. Nallanathan

引用次数: 12

New two-hop multiple relay protocol with H-ARQ in the absence of a direct link 在没有直接链路的情况下，具有H-ARQ的新两跳多中继协议

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-12 DOI: 10.1109/GLOCOM.2013.6831700

Bi Hong, Wan Choi, Chaehag Yi

引用次数: 2

SCoAP: An integration of CoAP protocol with web-based application SCoAP: CoAP协议与基于web的应用程序的集成

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-11 DOI: 10.1109/GLOCOM.2013.6831474

N. Giang, Minkeun Ha, Daeyoung Kim

{"title":"SCoAP: An integration of CoAP protocol with web-based application","authors":"N. Giang, Minkeun Ha, Daeyoung Kim","doi":"10.1109/GLOCOM.2013.6831474","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831474","url":null,"abstract":"This paper proposes an interesting yet practical use case of CoAP, an important application protocol in realizing the Internet of Things (IoT) vision. Originally, CoAP protocol is designed to communicate between embedded devices, however its applications can spread well over the Internet by exposing the devices' capabilities to the Web as Web resources. Thus, we claim that CoAP protocol could also be used in web-based application to leverage CoAP-based resources. Unfortunately, the design of CoAP protocol, for example, bind to UDP socket to reduce the package size or bidirectional communication to cope with duty-cycle power scheme, prevents it from being supported on conventional web browsers. Additionally, translation of CoAP into HTTP protocol via HTTP/CoAP proxy as recommended by IETF is not the best solution since many CoAP features are limited. Instead, new bidirectional web protocol such as HTML5 Web Socket would help to preserve the protocol's characteristics. We propose a solution called SCoAP that facilitates true CoAP communication in conventional web browsers by applying HTML5 Web Socket protocol. Experiment results have shown significant advantages of SCoAP solution over standard HTTP/CoAP proxy in term of network traffic and computational demand.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128841734","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: 10

LDPC code performance and optimum code rate for Contention Resolution Diversity ALOHA 争用分辨率分集ALOHA的LDPC码性能和最佳码率

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-11 DOI: 10.1109/GLOCOM.2013.6831520

C. Kissling, Federico Clazzer

引用次数: 6

Path loss validation for urban micro cell scenarios at 3.5 GHz compared to 1.9 GHz 3.5 GHz和1.9 GHz下城市微蜂窝场景的路径损耗验证

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-09 DOI: 10.1109/GLOCOM.2013.6831689

Ignacio Rodriguez, H. Nguyen, N. Jørgensen, T. B. Sørensen, J. Elling, M. B. Gentsch, P. Mogensen

{"title":"Path loss validation for urban micro cell scenarios at 3.5 GHz compared to 1.9 GHz","authors":"Ignacio Rodriguez, H. Nguyen, N. Jørgensen, T. B. Sørensen, J. Elling, M. B. Gentsch, P. Mogensen","doi":"10.1109/GLOCOM.2013.6831689","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831689","url":null,"abstract":"The 3.5 GHz band is a strong candidate for future urban micro cell deployment with base station antennas located below rooftop. Compared to other frequency bands, propagation in the 3.5 GHz band is relatively unexplored for the micro cell deployment. This paper presents a measurement-based analysis of outdoor and outdoor-to-indoor propagation at 3.5 GHz in comparison to the more well-known frequency of 1.9 GHz. A simple two-slope line-of-sight/non-line-of-sight outdoor path loss model is proposed and compared to different existing path loss models. The outdoor path loss is found to be approximately 5 dB higher for 3.5 GHz compared to 1.9 GHz. The outdoor-to-indoor propagation is investigated for two office buildings and different street shops. For the different presented scenarios, penetration loss increases with frequency and is found to be up to 5 dB higher for 3.5 GHz compared with 1.9 GHz. Although some existing models predict the observations with good accuracy, we propose a model based on line-of-sight probability that is simpler and easier to apply.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125740512","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: 42

Performance analysis of cooperative transmission for cognitive wireless relay networks 认知无线中继网络协同传输性能分析

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-09 DOI: 10.1109/GLOCOM.2013.6831730

Quoc-Tuan Vien, H. Nguyen, O. Gemikonakli, B. Barn

引用次数: 3

Network sharing and its energy benefits: A study of European mobile network operators 网络共享及其能源效益:对欧洲移动网络运营商的研究

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-09 DOI: 10.1109/GLOCOM.2013.6831460

M. Marsan, M. Meo

引用次数: 24

Neighborhood watch: On network coding throughput and key sharing 邻里监视:关于网络编码吞吐量和密钥共享

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-09 DOI: 10.1109/GLOCOM.2013.6831179

Martin Strohmeier, I. Martinovic, U. Roedig, Karim M. El Defrawy, J. Schmitt

{"title":"Neighborhood watch: On network coding throughput and key sharing","authors":"Martin Strohmeier, I. Martinovic, U. Roedig, Karim M. El Defrawy, J. Schmitt","doi":"10.1109/GLOCOM.2013.6831179","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831179","url":null,"abstract":"Network coding (NC) has frequently been promoted as an approach for improving throughput in wireless networks. Existing work has mostly focused on the fundamental aspects of NC, while constraints arising in real-world network deployments have not received much attention. In particular, NC requires network nodes to overhear each other's packets, which oftentimes contradicts many security standards that attempt to provide link-layer confidentiality, e.g., by utilizing pairwise encryption keys as is the case IEEE 802.11i and ZigBee. There is an inherent trade-off between gains from NC and link-layer security: if many nodes share the secret link-layer key, NC will improve throughput, yet a leakage of the key will affect many nodes. On the other hand, having distinct secret keys will increase resilience against key compromise, but will also minimize the coding gain. We formulate this security vs. performance trade-off as an optimization problem and evaluate the effectiveness of NC under different sizes of key-sharing groups and network topologies. Our results show that increasing the key-sharing group by a single node can result in a maximum coding gain between 1.3% and 13.7%.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122311216","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