2013 IEEE Global Communications Conference (GLOBECOM)最新文献_第7页

A highly efficient multi-carrier transmission scheme with message-driven idle subcarriers 一种具有消息驱动的空闲子载波的高效多载波传输方案

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831633

Tianlong Song, Tongtong Li

{"title":"A highly efficient multi-carrier transmission scheme with message-driven idle subcarriers","authors":"Tianlong Song, Tongtong Li","doi":"10.1109/GLOCOM.2013.6831633","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831633","url":null,"abstract":"This paper develops a highly efficient multi-carrier transmission scheme by using message-driven idle subcarrier identification. The basic idea is to carry part of the information, named carrier bits, through idle subcarrier selection while transmitting ordinary bits regularly on all the other subcarriers. When the number of subcarriers is much larger than the adopted constellation size (e.g., in most OFDM systems), a high spectral efficiency as well as power efficiency can be achieved. This is because that the number of carrier bits transmitted through each idle subcarrier is larger than the number of ordinary bits carried by a regular symbol, and all the carrier bits are transmitted with no power consumption through idle subcarrier selection. When applied to the OFDM framework, the proposed scheme can achieve an even higher spectral efficiency than OFDM, while keeping a higher power efficiency.We further enhance its security and error-tolerance using secure subcarrier assignment, secure symbol mapping and bit vector rearrangement. Both theoretical analysis and numerical results are provided to demonstrate the performance of the proposed scheme.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128926842","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

Single-receiver dual-channel dynamic bandwidth algorithm for local storage VoD delivery 单接收机双通道动态带宽本地存储视频点播算法

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831478

S. Abeywickrama, E. Wong

引用次数: 3

A scalable public key infrastructure for smart grid communications 用于智能电网通信的可扩展公钥基础设施

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831168

Mohamed Mahmoud, J. Misic, Xuemin Shen

引用次数: 15

Comparison of Multipath TCP and CMT-SCTP based on intercontinental measurements 基于洲际测量的多路径TCP和CMT-SCTP的比较

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831263

M. Becke, Hakim Adhari, E. Rathgeb, Fu Fa, Xiong Yang, Xing Zhou

{"title":"Comparison of Multipath TCP and CMT-SCTP based on intercontinental measurements","authors":"M. Becke, Hakim Adhari, E. Rathgeb, Fu Fa, Xiong Yang, Xing Zhou","doi":"10.1109/GLOCOM.2013.6831263","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831263","url":null,"abstract":"The market penetration of access devices with multiple network interfaces has increased dramatically over the last few years. As a consequence, there is a strong interest to use all of the available interfaces concurrently to improve data throughput. Corresponding extensions of established Transport protocols are receiving considerable attention within research and standardization. Currently two approaches are in the focus of the IETF: The Multipath TCP (MPTCP) extension for TCP and the Concurrent Multipath Transfer extension for SCTP (CMT-SCTP). This paper evaluates and compares implementations of these two loadsharing protocols by using both lab measurements and intercontinental testbed realized via the Internet between Europe and China. The experiments show that some performance critical aspects have not been taken into account in previous studies. Furthermore, they show that the simple scenario with two disjoint paths, which is typically used for evaluation, does not sufficiently cover the real Internet environment. Based on these insights, we highlight that the different path management strategies of the two protocols have a significant impact on their performance in real Internet scenarios.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132265440","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: 44

AFR: Accurate and fast RFID estimation AFR:准确和快速的RFID估计

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831077

Wenchao Jiang, Yanmin Zhu, Bo Li

{"title":"AFR: Accurate and fast RFID estimation","authors":"Wenchao Jiang, Yanmin Zhu, Bo Li","doi":"10.1109/GLOCOM.2013.6831077","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831077","url":null,"abstract":"A hot and primary problem in RFID system is the estimation of RFID tag cardinality and many algorithms have been proposed for estimating RFID cardinality. However, we find that there is a serious problem that has been widely neglected by some of previous works of RFID cardinality estimation. They incorrectly assume that states of different time slots in the same frame are independent of each other. The consequence of such incorrect assumption would lead to low estimation accuracy. To demonstrate how we correct this mistake, we propose an accurate and fast estimating algorithm called AFR based on the pattern of the number of consecutive empty slots before the first non-empty slot. We theoretically derive the expected number and the variance of consecutive empty slots before the first non-empty slot as a function of the number of tags. Based on such theoretical derivation, we determine the best estimation of the number of tags by only looking at the numbers of consecutive empty slots before the first non-empty slot. Simulation results demonstrate that our algorithm makes more accurate estimation of RFID tag cardinality than an existing state-of-the-art algorithm while using shorter estimation time.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128914432","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

Cross-channel gain estimation with amplify-and-forward relaying in cognitive radio 认知无线电中放大前向中继的跨信道增益估计

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831205

Lin Zhang, Guodong Zhao, Gang Wu, Zhi Chen

引用次数: 5

Hard combining based energy efficient spectrum sensing in cognitive radio network 认知无线电网络中基于硬组合的高能效频谱感知

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831211

Huanyu Yang, Zhifeng Zhao, Honggang Zhang

引用次数: 6

Congestion modeling in graph-routed Delay Tolerant Networks with Predictive Capacity Consumption 具有预测容量消耗的图路由容错网络中的拥塞建模

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831534

E. Birrane

{"title":"Congestion modeling in graph-routed Delay Tolerant Networks with Predictive Capacity Consumption","authors":"E. Birrane","doi":"10.1109/GLOCOM.2013.6831534","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831534","url":null,"abstract":"We present Predictive Capacity Consumption (PCC), a congestion modeling extension to graph-based routing protocols. This extension provides a solution to the problem of flow control in Delay-Tolerant Networks (DTNs) and other overlays that can neither synchronize physical link state across the network nor negotiate bandwidth consumption bridging heterogeneous link layers. PCC enables the construction of a distributed, predictive congestion model independent of the underlying link layer without requiring excessive broadcasts or other mechanisms unfeasible in DTNs. PCC examines information generated by routing protocols and adjusts local routing graphs to account for predicted message paths, correcting for downstream congestion and message retransmission. Unlike other mechanisms, the flow control provided by PCC can be implemented anywhere a graph-based routing methodology is used and the adoption of this method requires only minor modification to the in-situ routing framework. We describe the PCC algorithm, analyze its operation, and demonstrate its performance by simulating multiple data streams driving a set of constrained networks to saturation. The simulation results show that PCC improves the throughput of the network by 97% over table routing approaches and by 37% over graph routing approaches without congestion models.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115480500","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: 13

Performance analysis and resource allocation of heterogeneous cognitive gaussian relay channels 异构认知高斯中继信道性能分析与资源分配

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831232

Ke Xue, Xuemin Hong, Lingyu Chen, Jin Xiong, Jianghong Shi, Chengxiang Wang

引用次数: 6

An IP cross-layer scheduler for relative QoS support in NGNs 在ngn中提供相对QoS支持的IP跨层调度器

2013 IEEE Global Communications Conference (GLOBECOM) Pub Date : 2013-12-01 DOI: 10.1109/GLOCOM.2013.6831282

G. Panza, S. Grilli

{"title":"An IP cross-layer scheduler for relative QoS support in NGNs","authors":"G. Panza, S. Grilli","doi":"10.1109/GLOCOM.2013.6831282","DOIUrl":"https://doi.org/10.1109/GLOCOM.2013.6831282","url":null,"abstract":"Next-Generation Networks (NGNs) will support Quality of Service (QoS) over a mixed wired and wireless IP-based infrastructure. A relative model of service differentiation in Differentiated Services architecture is a scalable solution for delivering multimedia traffic. However, considering the dynamic nature of radio channels specifically, it is difficult to achieve the target quality provisioning working at the IP and lower layers separately as in the classical approach. In this work, an IP cross-layer scheduler able to support a Proportional Differentiation Model (PDM) for delay guarantees also over wireless is described. The key idea is to leverage feedbacks from the lower layers about the actual delays experienced by packets in order to tune at run-time the priority of the IP service classes with the objective of supporting a PDM at the network node on the whole across multiple layers. A simulation analysis demonstrates the prominent improvements in reliability and robustness of the proposal in the case of highly time-variant performance of the MAC and PHY layers with respect to the classical approach. Furthermore, considerations on the required functionality and likely deployment scenarios highlight the scalability and backward compatibility of the designed solution.","PeriodicalId":233798,"journal":{"name":"2013 IEEE Global Communications Conference (GLOBECOM)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115639675","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