发布求助
文献互助 智能选刊 最新文献

2012 IEEE 75th Vehicular Technology Conference (VTC Spring)最新文献

筛选
英文 中文
Performance Analysis of Enhanced Inter-Cell Interference Coordination in LTE-Advanced Heterogeneous Networks LTE-Advanced异构网络中增强小区间干扰协调的性能分析
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240233
Yuanye Wang, K. Pedersen
{"title":"Performance Analysis of Enhanced Inter-Cell Interference Coordination in LTE-Advanced Heterogeneous Networks","authors":"Yuanye Wang, K. Pedersen","doi":"10.1109/VETECS.2012.6240233","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240233","url":null,"abstract":"The performance of enhanced Inter-Cell Interference Coordination (eICIC) for Long Term Evolution (LTE)- Advanced with co-channel deployment of both macro and pico is analyzed. The use of pico-cell Range Extension (RE) and time domain eICIC (TDM muting) is combined. The performance is evaluated in the downlink by means of extensive system level simulations that follow the 3GPP guidelines. The overall network performance is analyzed for different number of pico-eNBs, transmit power levels, User Equipment (UE) distributions, and packet schedulers. Recommended settings of the RE offset and TDM muting ratio in different scenarios are identified. The presented performance results and findings can serve as input to guidelines for co-channel deployment of macro and pico-eNBs with eICIC.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133240257","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: 138
RAR: Risk Aware Revocation Mechanism for Vehicular Networks RAR:车辆网络的风险感知撤销机制
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239941
C. Gañán, J. L. Muñoz, O. Esparza, Jorge Mata-Díaz, Juan J. Alins-Delgado, C. S. Cárdenas, Gumercindo Bartra-Gardini
{"title":"RAR: Risk Aware Revocation Mechanism for Vehicular Networks","authors":"C. Gañán, J. L. Muñoz, O. Esparza, Jorge Mata-Díaz, Juan J. Alins-Delgado, C. S. Cárdenas, Gumercindo Bartra-Gardini","doi":"10.1109/VETECS.2012.6239941","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6239941","url":null,"abstract":"Vehicular Ad Hoc Networks (VANETs) require some mechanism to authenticate messages, identify valid vehicles, and remove misbehaving ones. A Public Key Infrastructure (PKI) can provide this functionality using digital certificates. In PKI, key management and corresponding issuance and revocation of digital certificates is one of the key issues that have to be solved. The IEEE 1609.2 standard states that VANETs will rely on the use of certificate revocation lists (CRLs) to achieve revocation. In this paper, we analyze the problems of using CRLs in these type of networks. Moreover, we describe the Risk Aware Revocation (RAR) mechanism that improves the traditional use of CRLs. RAR takes advantage of the two distinct channel types in VANETs to increase the freshness of the revocation information. Moreover, RAR allows users to gauge the risk of operating in a VANET when using CRLs.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127836868","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
Location-Aided Multi-User Beamforming for 60 GHz WPAN Systems 定位辅助多用户波束成形60ghz WPAN系统
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239978
Congzheng Han, Xiaoyi Zhu, A. Doufexi, T. Koçak
{"title":"Location-Aided Multi-User Beamforming for 60 GHz WPAN Systems","authors":"Congzheng Han, Xiaoyi Zhu, A. Doufexi, T. Koçak","doi":"10.1109/VETECS.2012.6239978","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6239978","url":null,"abstract":"60 GHz wireless personal area networks (WPANs) offer multi-Gbps throughput, which will provide for a new wave of high data rate applications. This paper exploits the use of location information to improve the performance and enhance range of 60 GHz multi-user beamforming systems. When the location information is available at the transmitter, the scheduler chooses a set of maximum angularly separated users to share wireless resources simultaneously. If additional feedback of signal-to-interference and noise ratio (SINR) is known, a location-assisted scheduler is employed to increase the system overall performance. Both numerical and simulated results show that significant enhancement can be achieved by the proposed schedulers for 60 GHz WPAN systems.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127859936","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
Interference Avoidance Transmission by Partitioned Frequency- and Time-Domain Processing 分频时域处理的抗干扰传输
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239988
Yasunori Futatsugi, M. Ariyoshi
{"title":"Interference Avoidance Transmission by Partitioned Frequency- and Time-Domain Processing","authors":"Yasunori Futatsugi, M. Ariyoshi","doi":"10.1109/VETECS.2012.6239988","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6239988","url":null,"abstract":"This paper presents an interference avoidance transmission technique for dynamic spectrum access (DSA). Generally, OFDM transmission induces high out-of-band emission due to the side-lobes of the transmitted sub-carriers. For a DSA based OFDM system, it is thus important to reduce the out-of-band emission. Aiming at providing high suppression effect for an interference avoidance notch, an interference avoidance transmission by partitioned frequency- and time-domain processing (IA-PFT) is proposed. IA-PFT is configured by a partitioned combination of the CC processing in the frequency domain and windowing processing in the time domain. Computer simulations show that IA-PFT reduces the interference power spectrum density under the condition of a highly prioritized wireless microphone in white space. Moreover, it is shown that IA-PFT realizes transmission performance and PAPR performance as much as those attained by conventional interference avoidance methods.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131313524","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
Interference Analysis and Performance Evaluation on the Coexistence of Macro and Micro/Pico Cells in LTE Networks LTE网络中宏/微/微蜂窝共存的干扰分析与性能评价
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239907
Yang Lan, A. Harada
{"title":"Interference Analysis and Performance Evaluation on the Coexistence of Macro and Micro/Pico Cells in LTE Networks","authors":"Yang Lan, A. Harada","doi":"10.1109/VETECS.2012.6239907","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6239907","url":null,"abstract":"3GPP Long Term Evolution (LTE) is the next generation network technology for beyond 3G. In the LTE system deployment, there may not be much separation between the frequency bands assigned to operators. Therefore, adjacent channel interference analysis between two coexisting LTE systems is a potentially important research field. In this paper, we investigate the coexistence problem between a macrocell and small cells, i.e., microcells and picocells, in LTE networks. We focus on analyzing the adjacent channel interference (ACI) between two coexisting systems with different duplex modes, i.e., frequency division multiplexing and time division multiplexing, deployed in adjacent frequency bands. Main contribution of this paper is to present the coexistence results of two systems by evaluating the macrocell performance degradation caused by ACI when it operates with microcell/picocell on adjacent channel in some typical interference scenarios. Based on comparison and analysis of simulation results, we find that in some scenarios two LTE systems could not coexist well under current LTE radio frequency requirements. We also present some suggestions and mitigation technologies to avoid large throughput loss due to ACI.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127061392","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: 15
A New Cooperative Transmission Strategy for Physical-Layer Security with Multiple Eavesdroppers 一种新的多窃听者物理层安全协同传输策略
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240269
Chin-Liang Wang, Ting-Nan Cho, Kai-Jie Yang
{"title":"A New Cooperative Transmission Strategy for Physical-Layer Security with Multiple Eavesdroppers","authors":"Chin-Liang Wang, Ting-Nan Cho, Kai-Jie Yang","doi":"10.1109/VETECS.2012.6240269","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240269","url":null,"abstract":"In this paper, we propose a two-phase cooperative transmission strategy using decode-and-forward (DF) relaying and cooperative null-steering beamforming (CN-SB) to overcome the multi-eavesdropper problem that reduces the secrecy capacity of wireless networks. First, two groups are built from all available relays-the jamming group and the cooperating group. Second, based on the proposed cooperative transmission strategy, we develop a new relay assignment and power allocation scheme to achieve a higher secrecy rate. Simulation results show that the secrecy rate of the proposed scheme linearly proportional to the signal-to-noise ratio (SNR), which is significantly larger than that of the scheme in which all relays perform CN-SB simultaneously in high SNR regions.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115756986","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: 7
A New Loop-Delay Estimation Algorithm for Amplifier Predistortion System 放大器预失真系统中一种新的环路延迟估计算法
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240132
Zhengdai Li, Xiaonian He, N. Wu
{"title":"A New Loop-Delay Estimation Algorithm for Amplifier Predistortion System","authors":"Zhengdai Li, Xiaonian He, N. Wu","doi":"10.1109/VETECS.2012.6240132","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240132","url":null,"abstract":"Predistortion technology is an adaptive, low cost and potential linearization method. Proper loop-delay estimation and compensation are important preconditions for ensuring the predistorter working well. But traditional loop-delay estimation algorithms are vulnerable to the amplifier's memory and nonlinear distortion. In this paper, based on the relationship between the system loop-delay and the amplitude of predistorter error output, we propose a new loop-delay estimation algorithm which improves the algorithm estimation accuracy in memory nonlinear distortion. Simulation results show that the NMSE converging curve is very close to the ideal one and a good power spectral density (PSD) performance is achieved. The new algorithm realizes the synchronous work of the predistorter and the loop-delay estimation that maintains the reliability and continuity of signal transmission.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124589523","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
La VoLTE: Novel Cross Layer Optimized Mechanism of Video Transmission over LTE for DRX La VoLTE:基于LTE的DRX视频传输跨层优化机制
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240102
R. K. Kalle, A. Nandan, D. Das
{"title":"La VoLTE: Novel Cross Layer Optimized Mechanism of Video Transmission over LTE for DRX","authors":"R. K. Kalle, A. Nandan, D. Das","doi":"10.1109/VETECS.2012.6240102","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240102","url":null,"abstract":"Power efficiency in broadband wireless access networks has emerged as a very important area of research worldwide. 4G wireless standards such as the 3GPP LTE have attempted to address this issue through mechanisms such as Discontinuous Reception (DRX) which can enhance the battery performance in user equipments (UEs) and improve resource utilization at the base station (eNodeB) especially for applications characterized by long periods of inactivity such as the WWW. However, DRX in connected mode has not been optimized for real time applications such as Mobile TV and Video on Demand (VoD) which require strict latency and QoS uarantees. This paper presents a novel mechanism, La VoLTE, based on time series prediction and enhanced eNodeB architecture to determine DRX opportunities during video streaming over Real Time Protocol (RTP) in a TDD-LTE network without compromising the QoS. Through extensive simulations, it is found that the proposed mechanism can result in 30-80 percent power saving over the video transmission duration depending on video data for different video quality and bandwidth requirements.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114307164","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
Suboptimal Power Allocation for a Two-Path Successive Relay System with Full Interference Cancellation 具有完全干扰消除的双路径连续继电系统的次优功率分配
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240057
Chang-Chen Chu, Hung-Chin Wang, Chin-Liang Wang
{"title":"Suboptimal Power Allocation for a Two-Path Successive Relay System with Full Interference Cancellation","authors":"Chang-Chen Chu, Hung-Chin Wang, Chin-Liang Wang","doi":"10.1109/VETECS.2012.6240057","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240057","url":null,"abstract":"Although power allocation considerably affects the symbol error rate (SER) performance of a two-path successive relay system (TPSRS), it is not yet studied in a full interference cancellation (FIC) scenario. In this paper, we develop a suboptimal power allocation scheme for the TPSRS-FIC through minimizing an SER-based cost function. To obtain a closed-form power allocation solution, the cost function is defined as a part of the Taylor series expansion of the theoretical SER. Simulation results show that the proposed scheme can provide almost the lowest SER under limited power resources.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114498230","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: 7
A Performance Comparison of Mobile WiMAX Spectrums: 2.5 GHz vs. 3.65 GHz 移动WiMAX频谱的性能比较:2.5 GHz与3.65 GHz
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240329
P. Shrestha, M. Hempel, P. Mahasukhon, Tao Ma, H. Sharif
{"title":"A Performance Comparison of Mobile WiMAX Spectrums: 2.5 GHz vs. 3.65 GHz","authors":"P. Shrestha, M. Hempel, P. Mahasukhon, Tao Ma, H. Sharif","doi":"10.1109/VETECS.2012.6240329","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240329","url":null,"abstract":"Mobile WiMAX is a popular broadband solution with diverse applications. In the United States, the Federal Communications Commission (FCC) currently issues licenses for Mobile WiMAX in several frequency bands, of which 2.5 GHz and 3.65 GHz are the most prevalent. A significant amount of research has been conducted in the domain of 2.5 GHz due to its widespread commercial use. However, no such work - academic or industrial - has been reported for 3.65 GHz, in spite of it being a more favorable option for many applications, particularly because of its licensing requirements. In this paper, we present a comprehensive comparison of these two frequency bands in order to provide benchmark results for use by network planners, engineers and researchers. Our analysis indicates that, while 2.5 GHz Mobile WiMAX generally offers a larger coverage area, the attractive licensing options for 3.65 GHz may present an interesting alternative for many deployment scenarios and applications.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114562636","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信