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
Enhancements to MIMO Enabled Cells in WCDMA Cellular Systems WCDMA蜂窝系统中支持MIMO的蜂窝的增强
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240074
Zbigniew Matuszewski, M. Panek, P. Czerepinski, T. Dodgson, Thomas Chapman
{"title":"Enhancements to MIMO Enabled Cells in WCDMA Cellular Systems","authors":"Zbigniew Matuszewski, M. Panek, P. Czerepinski, T. Dodgson, Thomas Chapman","doi":"10.1109/VETECS.2012.6240074","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240074","url":null,"abstract":"Multiple input multiple output (MIMO) technologies are being introduced in wideband code division multiple access (WCDMA) systems to improve their spectral efficiency. Application of MIMO requires pilot and data signals to be transmitted in the downlink (DL) from each of the two antennas of the base station (BS). At certain time instants, however, single antenna (SA) transmissions may yield instantaneously improved performance compared to MIMO, even though MIMO improves performance at other times. Performance gains of discontinuous secondary pilot transmissions and single antenna transmissions to MIMO MS schemes are investigated by simulation. Practical implementation issues are analyzed to validate deployment feasibility and estimate practical throughput gains compared to the simulation results.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"404 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":"115920006","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: 2
The Potential of Moving Relays - A Performance Analysis 移动继电器的潜力-性能分析
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240247
Yutao Sui, Agisilaos Papadogiannis, T. Svensson
{"title":"The Potential of Moving Relays - A Performance Analysis","authors":"Yutao Sui, Agisilaos Papadogiannis, T. Svensson","doi":"10.1109/VETECS.2012.6240247","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240247","url":null,"abstract":"In this paper we show the potential of moving relay nodes (MRNs), i.e., relays mounted on top of public transportation vehicles, to improve capacity, reliability and coverage for vehicular users in future wireless networks. To this end, we study and compare the performance of dual-hop MRN assisted transmission, dual-hop transmission assisted by a fixed relay node (FRN) deployed on the street, as well as of the baseline single-hop direct transmission. For an accurate comparison, we optimize the FRN position in terms of outage probability (OP). This position is a function of the pathloss, transmit power and vehicle penetration loss (VPL). The problem is investigated for Rayleigh fading under a fixed cell coverage. When VPL is moderate to high, MRN assisted transmission greatly outperforms transmission assisted by an FRN as well as direct transmission, hence it is very promising for future wireless systems.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"10 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":"132326779","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: 73
Asymptotic Performance Analysis of AF Relaying in Two-Wave with Diffuse Power Fading Channels 双波扩散性功率衰落信道自动对焦中继的渐近性能分析
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239849
Yao Lu, Xiaoxiang Wang
{"title":"Asymptotic Performance Analysis of AF Relaying in Two-Wave with Diffuse Power Fading Channels","authors":"Yao Lu, Xiaoxiang Wang","doi":"10.1109/VETECS.2012.6239849","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6239849","url":null,"abstract":"In the context of two-wave with diffuse power (TWDP) fading scenarios, this paper analyzes the outage probability and symbol error rate (SER) of single relay cooperative networks using amplify-and-forward (AF) relaying. Each channel in the network is assumed to be independently and non-identically distributed. The statistical result of the upper bound on the received signal-to-noise ratio (SNR) is derived. We derive the closed-form asymptotic expressions to approximate the outage probability and SER in the high SNR regime, respectively. Based on the asymptotic results, the diversity order and coding gain of the cooperative network is analyzed. Simulation results show that these asymptotic results are tight particularly in the high SNR regime for cooperative networks in different fading scenarios.","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":"130242876","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
Probabilistic Neural Network for RSS-Based Collaborative Localization 基于rss的概率神经网络协同定位
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239993
Peisen Zhao, Chunxiao Jiang, Hongyang Chen, Yong Ren
{"title":"Probabilistic Neural Network for RSS-Based Collaborative Localization","authors":"Peisen Zhao, Chunxiao Jiang, Hongyang Chen, Yong Ren","doi":"10.1109/VETECS.2012.6239993","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6239993","url":null,"abstract":"One critical challenge for accurate localization with Received Signal Strength Indicator (RSSI) is the anisotropic environment, which causes the RSS-Distance Relationship (RDR) to vary spatially. To alleviate localization error caused by RDR anisotropy, most of existing works adopt multiple RDR algorithms. However, we have found that the arbitrary RDR selection in these algorithms can lead to large localization error. Moreover, localization accuracy can be further enhanced by utilizing information provided by more Access Points (APs). To address these problems, we propose a Probabilistic Neural Network based localization algorithm in this paper. The algorithm features two steps: Global Optimization and Regional Compensation, during which all APs exchange information about the Blind Node (BN) to locate it collaboratively. Simulation result shows that the proposed algorithm can achieve a localization accuracy 35% higher than that of multiple RDR algorithms.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"1 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":"134389313","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: 4
Optimized Power Allocation Scheme for Land Mobile Satellite Cooperative Diversity Communications 陆地移动卫星协同分集通信的优化功率分配方案
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6239878
Xu Wang, Mingchuan Yang, Qing Guo
{"title":"Optimized Power Allocation Scheme for Land Mobile Satellite Cooperative Diversity Communications","authors":"Xu Wang, Mingchuan Yang, Qing Guo","doi":"10.1109/VETECS.2012.6239878","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6239878","url":null,"abstract":"In this paper, an optimized transmitting power allocation scheme between the source and its cooperator is presented, minimizing the derived closed-form approximated outage probability expressions for the separately adopted maximum ratio combining (MRC) algorithm and selective diversity combining (SDC) algorithm at the satellite. The circumstance considered is the uplink of a dual-hop land mobile satellite cooperative diversity communication system with decode-and-forward (DF) protocol. Simulation results illustrate that the optimized power allocation scheme excellently outperforms the conventional uniform power allocation scheme on outage probability. The preferable choice of the combing algorithm between MRC and SDC in terms of the minimal outage probabilities changes with the variation of the maximum power allowed to consuming for transmitting a packet.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"53 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131721794","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
A Cooperative Downlink Power Setting Scheme for CA-Based Femtocells 基于ca的飞蜂窝下行功率协同设置方案
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240085
Ben Wang, Yinghai Zhang, Weidong Wang, M. Lei, Lei Jiang
{"title":"A Cooperative Downlink Power Setting Scheme for CA-Based Femtocells","authors":"Ben Wang, Yinghai Zhang, Weidong Wang, M. Lei, Lei Jiang","doi":"10.1109/VETECS.2012.6240085","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240085","url":null,"abstract":"Carrier Aggregation (CA) adds a new scheduling domain which makes the radio resource management more flexible for future LTE-Advanced system, and also provides a new path to solve the intra-tier interference among femtocells. This paper proposes a Cooperative Power Setting Scheme to mitigate the intra-tier interference among CA-based femtocells. In the proposed scheme the impact of transmission power is considered, and femtocells cooperatively adjust their transmission power to optimize the total throughput on each Component Carrier. Simulation proves that the proposed scheme is effective and compensates for the deficiency of existing researches. The advantage of the proposed scheme is obvious especially when the deployment of femtocells is dense.","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":"132980496","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
Evaluation of MIMO Transmission for HSUPA HSUPA的MIMO传输评估
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240072
R. Maslennikov, P. Czerepinski, Mikhail Shkerin, A. Trushanin, Michael Shashanov, V. Shumilov
{"title":"Evaluation of MIMO Transmission for HSUPA","authors":"R. Maslennikov, P. Czerepinski, Mikhail Shkerin, A. Trushanin, Michael Shashanov, V. Shumilov","doi":"10.1109/VETECS.2012.6240072","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240072","url":null,"abstract":"In this work, MIMO extensions to the existing HSUPA system are presented and evaluated. Three candidate MIMO enhancement architectures are proposed that differ with respect to the principles of code word mapping onto the two spatial streams for rank-2 transmission. The evaluation demonstrates MIMO throughput gains relative to SIMO ranging between 30% and 40%. The MIMO architecture with independent transmission of two code words over the two spatial channels is demonstrated to be the most effective because of its ability independently to adapt the data rate on each spatial channel to the instantaneous channel conditions. The gains are realized at high RoT (rise over thermal) values, indicating isolated small cells with low UE densities as the likely deployment scenario for HSUPA MIMO.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"55 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":"127564445","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: 2
Transport Commons: A Community Based Public Transport System 公共交通:以社区为基础的公共交通系统
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240028
F. Safaei
{"title":"Transport Commons: A Community Based Public Transport System","authors":"F. Safaei","doi":"10.1109/VETECS.2012.6240028","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240028","url":null,"abstract":"In this paper we present a generalization of the concept of car-pooling for a public transport system, in which members of the community donate their trips to the 'transport commons'. The proposed system will then match the passengers to vehicles based on a range of criteria, including trip times, personal choices and economic incentives. We develop an analytical model to determine the probability of obtaining a ride from the transport commons in a worst-case scenario. The results of the analysis as well as simulation study demonstrate that the transport commons can provide a practical basis for a dependable public transport service.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"275 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":"133533464","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
MLD-Based MU-MIMO Detection Scheme for LTE Downlink 基于mld的LTE下行链路MU-MIMO检测方案
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240033
Chimato Koike, Daisuke Ogawa, Takashi Seyama, Takashi Dateki
{"title":"MLD-Based MU-MIMO Detection Scheme for LTE Downlink","authors":"Chimato Koike, Daisuke Ogawa, Takashi Seyama, Takashi Dateki","doi":"10.1109/VETECS.2012.6240033","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240033","url":null,"abstract":"Currently Multi-User MIMO (MU-MIMO) attracts attention to improve frequency usage efficiency. When using Maximum Likelihood Detection (MLD) for MU-MIMO detection, we need to know the modulation type of the transmitted signals. However in 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) system, the user to whom MU-MIMO is applied cannot be informed about the modulation type of the signals for a multiplexed interference user. Therefore, linear filters such as Zero Forcing (ZF) and Minimum Mean Square Error (MMSE) are typically applied. In this paper, we propose an MLD-based MU-MIMO detection method with modulation-type estimation. In this method, we perform MLD by assuming possible modulation types to calculate metrics, and by comparing them, we determine the modulation type of the signals for an interference user. From the computer simulation results, we find that the proposed method can obtain better performance than MMSE with a slight increase in complexity from SU-MIMO detection.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"102 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":"133548601","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
Estimation of Effective Radio Resource Usage for VoIP Scheduling in OFDMA Cellular Networks OFDMA蜂窝网络中VoIP调度的有效无线电资源利用估计
2012 IEEE 75th Vehicular Technology Conference (VTC Spring) Pub Date : 2012-05-06 DOI: 10.1109/VETECS.2012.6240309
Suvra Shekhar Das, P. Ghosh, P. Chandhar
{"title":"Estimation of Effective Radio Resource Usage for VoIP Scheduling in OFDMA Cellular Networks","authors":"Suvra Shekhar Das, P. Ghosh, P. Chandhar","doi":"10.1109/VETECS.2012.6240309","DOIUrl":"https://doi.org/10.1109/VETECS.2012.6240309","url":null,"abstract":"This work presents a method to estimate the amount of radio resource required to support a given number of Voice Over IP (VoIP) users in Orthogonal Frequency Division Multiple Access (OFDMA) based cellular systems. The proposed method is useful for the Call Admission Control (CAC) module, which needs to estimate the radio resource utilization before admitting new calls in the system. It is also useful in predicting the maximum number of VoIP users that can be supported for different cell scenarios and spatial user distributions. The proposed method is evaluated for Dynamic as well as Semi-Persistent (SP) scheduling algorithms. Results are presented for 1×2 Maximum Ratio Combining (MRC) and 4×2 Space Frequency Block Code (SFBC)- Frequency Switched Time Diversity (FSTD) modes. The 3rd Generation Partnership Project (3GPP)-Long Term Evolution (LTE) system parameters are used for performance analysis in this work.","PeriodicalId":333610,"journal":{"name":"2012 IEEE 75th Vehicular Technology Conference (VTC Spring)","volume":"39 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":"132594279","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
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