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2010 IEEE 71st Vehicular Technology Conference最新文献

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An Accurate Performance Analysis of Hybrid TH/DS Multiple Access UWB System Using N-ary Biorthogonal PPM 基于n进制双正交PPM的TH/DS多址UWB混合系统精确性能分析
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5493900
Ye-Shun Shen, Fang-Biau Ueng
{"title":"An Accurate Performance Analysis of Hybrid TH/DS Multiple Access UWB System Using N-ary Biorthogonal PPM","authors":"Ye-Shun Shen, Fang-Biau Ueng","doi":"10.1109/VETECS.2010.5493900","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5493900","url":null,"abstract":"A hybrid time-hopping/direct-sequence (TH/DS) multiple access ultra-wideband (UWB) system combined with N-ary biorthogonal pulse position modulation (BPPM) is proposed and analyzed. Based on the exact characteristic function (CF) technique, we also derive the probability distribution of the multiple access interference (MAI) and the average symbol error rate (SER) of the proposed scheme. Simulation results are provided to verify the analytical frameworks. The tradeoff of the system parameters for the proposed system under the constraints of fixed bit rate and signal bandwidth is also examined.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132061504","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
Zooming: A Zoom-Based Approach for Parking Space Availability in VANET 缩放:基于缩放的VANET停车位可用性方法
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5493652
Guey-Yun Chang, J. Sheu, Cheng-Yu Chung
{"title":"Zooming: A Zoom-Based Approach for Parking Space Availability in VANET","authors":"Guey-Yun Chang, J. Sheu, Cheng-Yu Chung","doi":"10.1109/VETECS.2010.5493652","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5493652","url":null,"abstract":"In this paper, we propose a zoom-based approach for parking space availability. The main idea of our scheme lies on the fact that drivers near the queried locations are interested in detail (zoomed-in) parking space information, while drivers in a distant place are interested in rough (zoomed-out) information about free parking spaces. Our zooming technique is based on discrete cosine transform. Besides, a winner-take-all scheme is also proposed to further reduce communication overhead in packet loss environment. As compared to previous work, simulation results show that our scheme reduces 40% to 50% communication overhead.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130801409","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: 8
A Differential Cross-Correlation Cell Search Algorithm for IEEE 802.16e OFDMA Systems 一种用于IEEE 802.16e OFDMA系统的差分互相关小区搜索算法
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5493886
Juinn-Horng Deng, S. Chang, Jeng-Kuang Hwang, Shu-Min Liao
{"title":"A Differential Cross-Correlation Cell Search Algorithm for IEEE 802.16e OFDMA Systems","authors":"Juinn-Horng Deng, S. Chang, Jeng-Kuang Hwang, Shu-Min Liao","doi":"10.1109/VETECS.2010.5493886","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5493886","url":null,"abstract":"A differential cross-correlation cell ID identification algorithm is proposed for IEEE 802.16e OFDMA cellular system. First, we construct the downlink (DL) preamble structure and signal model with carrier frequency offset (CFO) and channel effects. Next, in order to achieve the initial synchronization, a differential receiver with cross correlation for all preamble patterns is proposed to search cell ID. Simulation results confirm that the proposed structure is suitable for ITU fading channels and outperforms the conventional cell search system.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130259321","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
60 GHz Radio Channel Measurements and Modeling in a Shielded Room 屏蔽室内60ghz无线电信道测量与建模
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5494120
M. Kyrö, J. Simola, K. Haneda, S. Ranvier, P. Vainikainen, K. Takizawa
{"title":"60 GHz Radio Channel Measurements and Modeling in a Shielded Room","authors":"M. Kyrö, J. Simola, K. Haneda, S. Ranvier, P. Vainikainen, K. Takizawa","doi":"10.1109/VETECS.2010.5494120","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5494120","url":null,"abstract":"This report describes results from 60 GHz channel measurements and modelling in a shielded room. Final goal of this work is to investigate potential and feasibility of 60 GHz radios for very-high-data-rate short-range communications in medical applications. The measurement in a shielded room is meaningful for studying propagation characteristics in medical applications, since real surgery rooms are typically shielded. One particular usage scenario, i.e., real-time video streaming for ultrasonic imaging, was considered, where the antenna settings were adjusted to the usage scenario accordingly. Link budget and delay domain multipath characteristics were analyzed and modelled. Finally, model parameters that fit the measured power delay profiles were given.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129208461","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
Multi-Cell Interference Aware Resource Allocation for Half-Duplex Relay Based Cooperation 基于半双工中继合作的多小区干扰感知资源分配
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5493626
Cédric Abgrall, E. Strinati, J. Belfiore
{"title":"Multi-Cell Interference Aware Resource Allocation for Half-Duplex Relay Based Cooperation","authors":"Cédric Abgrall, E. Strinati, J. Belfiore","doi":"10.1109/VETECS.2010.5493626","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5493626","url":null,"abstract":"The goal of our work is to limit inter-cell interference in two hops cooperative communication systems.We propose to exploit the standard half-duplex limitation of relays so as to coordinate in time and frequency the resource allocation of a cluster of neighbor cells, and then to adapt resource allocation to changes in the communication context. Simulation results show how our proposed allocation modes permit to outperform classical modes in terms of cooperation effectiveness, power consumption and perceived Quality of Service (QoS).","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126647885","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
A Hierarchical Clustering Technique for Radio Map Compression in Location Fingerprinting Systems 定位指纹系统中无线地图压缩的层次聚类技术
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5493643
Azin Arya, P. Godlewski, Philippe Melle
{"title":"A Hierarchical Clustering Technique for Radio Map Compression in Location Fingerprinting Systems","authors":"Azin Arya, P. Godlewski, Philippe Melle","doi":"10.1109/VETECS.2010.5493643","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5493643","url":null,"abstract":"Location Fingerprinting is one of the radio positioning techniques which has been proposed in the field of Location Based Services (LBS). Considering the actual trends towards energy efficient systems and green networking, reducing the energy consumption has become a challenging issue in the context of fingerprinting systems. In this paper we present a clustering technique which aims to compress the radio database and hence to reduce the online processing load of the system. We propose a hierarchical clustering method which is applied in a concatenated location-radio signal space. %The clustering technique tries to provides high quality signal matching in radio signal space and low positioning error in geographical domain. Computer simulations have been conducted to evaluate the performance of the proposed technique in environments with different shadowing configurations. The results show that the proposed clustering technique outperforms the conventional griding method, and besides allows us to reduce the size of the database significantly while keeping an acceptable level of performance for the positioning system.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126885688","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: 21
System Optimization in Relay Enhanced LTE-Advanced Networks via Uplink Power Control 基于上行功率控制的中继增强型LTE-Advanced网络系统优化
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5493987
Ö. Bulakci, S. Redana, B. Raaf, Jyri Hämäläinen
{"title":"System Optimization in Relay Enhanced LTE-Advanced Networks via Uplink Power Control","authors":"Ö. Bulakci, S. Redana, B. Raaf, Jyri Hämäläinen","doi":"10.1109/VETECS.2010.5493987","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5493987","url":null,"abstract":"Relaying is a promising enhancement to current radio technologies, which has been investigated in the 3GPP LTE-Advanced study item and has been recently agreed to be standardized during the work item. Relay enhanced networks are expected to fulfill the demanding coverage and capacity requirements in a cost-efficient way. Yet, in order to fully exploit the benefits of relaying, the inter-cell interference which is increased due to the presence of relay nodes should be limited. Moreover, large differences in the received power levels from different users should be avoided. The goal is to keep the receiver dynamic range low in order to retain the orthogonality of the SC-FDMA system. In this paper, an evaluation of the relay based deployment within the LTE-Advanced uplink framework is carried out by applying the standardized LTE power control scheme both at eNBs and relay nodes. The power control is shown to be a crucial means to increase the cell edge and system capacity, to mitigate inter-cell interference and to adjust the receiver dynamic range.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123111494","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: 23
Cyclostationarity Based Multi-Antenna Spectrum Sensing in Cognitive Radio Networks 认知无线电网络中基于循环平稳的多天线频谱感知
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5493673
Guohui Zhong, Jiaming Guo, Zhen Zhao, Daiming Qu
{"title":"Cyclostationarity Based Multi-Antenna Spectrum Sensing in Cognitive Radio Networks","authors":"Guohui Zhong, Jiaming Guo, Zhen Zhao, Daiming Qu","doi":"10.1109/VETECS.2010.5493673","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5493673","url":null,"abstract":"In this paper, we propose an approach of multi-antenna spectrum sensing based on cyclostationarity for cognitive radio. The key idea of the proposed method is to extend Dandawate's generalized likelihood ratio test to take into account the estimation of all cyclic cross-correlation as well as all cyclic autocorrelation obtainable in a multi-antenna system. The proposed method is able to take advantage of spatial diversity without any prior knowledge or estimation of channel information. Furthermore, we propose a simplified method to replace the full generalized likelihood ratio test in order to reduce the computational complexity. Simulation results show the reliability of our proposed detector and demonstrate the effectiveness of using the cyclic cross-correlations, which contribute to a performance gain of approximately 2dB when a four-antenna receiver is considered.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122250787","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: 23
Modification of SOVA-Based Algorithms for Efficient Hardware Implementation 改进基于sova的高效硬件实现算法
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5493927
Lay-Hong Ang, Wee-Guan Lim, M. Kamuf
{"title":"Modification of SOVA-Based Algorithms for Efficient Hardware Implementation","authors":"Lay-Hong Ang, Wee-Guan Lim, M. Kamuf","doi":"10.1109/VETECS.2010.5493927","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5493927","url":null,"abstract":"In this paper, a modified soft-output Viterbi algorithm (SOVA) is presented to enable efficent hardware implementation. The forward-only processing of the SOVA has an inherent lower latency than forward-backward algorithms such as BCJR and its offsprings, which are commonly used in iterative decoders. Thus, SOVA-based architectures require less parallelization and therefore hardware for the same data throughput. A simplification is proposed to the Battail rule (BR) SOVA to approximate the concurrent path reliability values with the corresponding metric differences. This simplified BR-SOVA (SB-SOVA) performs close to max-log-MAP. Furthermore, a novel hybrid decoding architecture is proposed that combines the simplicity of the original Hagenauer rule and the performance-preserving properties of the SB-SOVA to trade implementation complexity for decoding performance. The hybrid approach is evaluated with practical link-level simulations of the downlink data channel in LTE Rel-8.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116092148","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
MIMO System Performance Evaluation of a 4-port Antenna in Indoor Environment at 2.6GHz 2.6GHz室内环境下4端口天线MIMO系统性能评估
2010 IEEE 71st Vehicular Technology Conference Pub Date : 2010-05-16 DOI: 10.1109/VETECS.2010.5494105
Ming-Ying Lee, Yu-Chun Lu, Li-Han Tu, Yi-Cheng Lin, Shun-Chang Lo, G. C. Chuang, D. Lin, Hsueh-Jyh Li
{"title":"MIMO System Performance Evaluation of a 4-port Antenna in Indoor Environment at 2.6GHz","authors":"Ming-Ying Lee, Yu-Chun Lu, Li-Han Tu, Yi-Cheng Lin, Shun-Chang Lo, G. C. Chuang, D. Lin, Hsueh-Jyh Li","doi":"10.1109/VETECS.2010.5494105","DOIUrl":"https://doi.org/10.1109/VETECS.2010.5494105","url":null,"abstract":"A 4-port antenna is designed for evaluating the performance of an MIMO system in indoor environment. Diversity gain, correlation coefficient and channel capacity are calculated and discussed in this paper. The selection diversity becomes more unapparent when using more antennas in MIMO system. Correlation in both rich scattering and high K-factor environment are found below 0.2 and 0.5 respectively. Channel capacity is 82% of the ideal case with uncorrelated channel. The above-mentioned results suggest the effectiveness of the proposed antenna.","PeriodicalId":325246,"journal":{"name":"2010 IEEE 71st Vehicular Technology Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115215217","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
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