2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)最新文献_第10页

Shadow fading assisted device-free localization for indoor environments 阴影消退辅助室内环境的无设备定位

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752605

Bingyang Han, Zhenghuan Wang, Heng Liu, Shengxin Xu, Xiangyuan Bu, Jianping An

{"title":"Shadow fading assisted device-free localization for indoor environments","authors":"Bingyang Han, Zhenghuan Wang, Heng Liu, Shengxin Xu, Xiangyuan Bu, Jianping An","doi":"10.1109/WCSP.2016.7752605","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752605","url":null,"abstract":"Device-free localization (DFL) localizes the target by employing the variation of received signal strength (RSS) due to the presence of the target which wears no device. The existing fingerprint-based DFL (FDFL) method simply compares the online RSS variations with the radio map and does not care about how RSS variation is caused. However, we have found that when some links are shadowed by the target, even in indoor environments, the RSS of the links will experience large attenuation. Hence, in this paper, we propose to leverage shadowed links to enhance the performance of FDFL method. Specifically, we first detect the shadowed links in the monitored region, where the detection takes both the RSS variations and fade levels of the links into consideration. Afterwards, we reformulate the fingerprint matching by reducing the search space into the shadow region for improving the localization accuracy. Moreover, we propose a geometrical localization (GL) method if shadow regions of the detected shadowed links intersect. The experimental results show that the performance of the proposed method has been improved significantly compared to the traditional FDFL method.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128932029","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: 9

A multi-band power allocation scheme for green energy-efficient cognitive radio networks 一种绿色节能认知无线网络的多频段功率分配方案

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752694

Quanquan Wang, Yulong Zou, Jia Zhu

{"title":"A multi-band power allocation scheme for green energy-efficient cognitive radio networks","authors":"Quanquan Wang, Yulong Zou, Jia Zhu","doi":"10.1109/WCSP.2016.7752694","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752694","url":null,"abstract":"Green cognitive radio has attracted significant research attention as an effective means of alleviating spectrum scarcity and energy-saving problem in wireless communications. In this paper, we focus on the power allocation for maximizing the transmission throughput and energy efficiency (EE) of secondary users (SUs). More specifically, we propose a multi-band power allocation scheme, where multiple idle spectrum bands detected in spectrum sensing phase are simultaneously utilized for the secondary transmission. We formulate the power allocation between multiple detected idle spectrum bands with the consideration of mutual interference between the primary user (PU) and SU which is referred to as multi-band power allocation (MBPA). We prove that the formulated MBPA problem is convex and consider the use of sequential unconstrained minimization technique (SUMT) interior point method for solving the formulated problem. Finally, numerical results show the advantage of proposed MBPA scheme over conventional equal-power allocation (EPA) and best-band selection (BBS) methods in terms of the energy efficiency.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127367962","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

Speech enhancement using bone- and air-conducted signals and adaptive GFLANN filter 骨传导和空气传导信号及自适应GFLANN滤波器的语音增强

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752692

Ran Xiao, Yegui Xiao, Hongyun Wei, K. Hasegawa

引用次数: 3

Dynamic modeling for route-based motions 基于路径运动的动态建模

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752488

Linfeng Xu, Yan Liang, Feng Yang

引用次数: 1

Hierarchical beam selection in mmWave multiuser MIMO systems with one-bit analog phase shifters 具有1位模拟移相器的毫米波多用户MIMO系统的分层波束选择

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752457

Shijian Gao, Yue Dong, Chen Chen, Ye Jin

{"title":"Hierarchical beam selection in mmWave multiuser MIMO systems with one-bit analog phase shifters","authors":"Shijian Gao, Yue Dong, Chen Chen, Ye Jin","doi":"10.1109/WCSP.2016.7752457","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752457","url":null,"abstract":"Hybrid digital/analog precoding has been widely utilized in millimeter-wave (mmWave) multiple-input multiple-output (MIMO) systems. Compared to the digital precoder, it is more challenging to design the analog precoder because of the constant amplitude (CA) constraints on the entries. Although high-resolution analog phase shifters (APSs) can provide more choices in phase adjustment, it also adds the difficulty in designing effective codebooks for beam selection. In addition, the finer APSs are accompanied by the higher hardware cost and power consumption. Driven by the low hardware cost and power consumption, we employ one-bit APSs to perform analog precoding. A simple codebook for hierarchical searching is designed. Then a low-complexity hierarchical beam selection algorithm is devised to reduce the training overhead. An approximate expression of spectral efficiency after hybrid precoding in one-bit-APS system is also derived, which is close to the simulation results in medium signal-to-noise ratio (SNR). Despite a performance degradation, both the theoretical analysis and the simulation results show that the performance is still comparable to the existing alternatives with much lower training overhead and hardware cost. Therefore, the proposed one-bit-APS system can be an acceptable tradeoff in practical implementation.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127301686","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: 14

Paths sharing based FP-growth data mining algorithms 基于路径共享的fp增长数据挖掘算法

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752497

Sha Ji, Deng-yin Zhang, Liu Zhang

引用次数: 0

Spectral efficiency for massive MIMO zero-forcing receiver with low-resolution ADC 带低分辨率ADC的大规模MIMO强制零接收机的频谱效率

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752527

Dan Qiao, Weiqiang Tan, Yuyan Zhao, Chao-Kai Wen, Shi Jin

引用次数: 21

PPViBe: Privacy preserving background extractor via secret sharing in multiple cloud servers PPViBe:通过在多个云服务器上共享秘密来保护隐私的后台提取器

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752569

Xin Jin, Yaming Wu, Xiaodong Li, Yuzhen Li, Geng Zhao, Kui Guo

{"title":"PPViBe: Privacy preserving background extractor via secret sharing in multiple cloud servers","authors":"Xin Jin, Yaming Wu, Xiaodong Li, Yuzhen Li, Geng Zhao, Kui Guo","doi":"10.1109/WCSP.2016.7752569","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752569","url":null,"abstract":"Recently, with the maturity of cloud services and the development of distributed computing, increasing images and video data are stored in the cloud. However, cloud services are generally provided by the third party entities. In addition, the images and video which are stored in the cloud mostly depend on the security of the cloud servers, while the data are not encrypted, which is a great threat to the users' privacy. In this paper, we propose a method of privacy preserving background extraction of video surveillance in multiple cloud servers based on Chinese Remainder Theorem (CRT). The client uses the CRT to divide a video frame into several encrypted frames, which are sent to the corresponding cloud servers separately. The cloud servers conduct the algorithm of Visual Background Extractor (ViBe) in the encrypted video frames, hereafter, the results obtained are transmitted to the end server, in which the results are decrypted and combined to get the final extraction results in original videos. Finally, the results are transmitted back to the client. The proposed method has several advantages: (1) Based on our encryption method, the original extraction method in the original videos need not be changed; (2) Each cloud server learns only a portion of the video frame information, yet they cannot recover the original video even if the data is leaked; (3) Multiple cloud servers can improve the security of data and enhance the processing efficiency. The experimental results on several video surveillance datasets shows that our method can correctly extract the background as the original ViBe algorithm does while protecting the privacy of the client video data.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130395922","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

Joint precoding and antenna selection for large-scale MU-MIMO uplink systems 大规模MU-MIMO上行系统联合预编码与天线选择

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752522

Xiongfei Zhai, Qingjiang Shi, Yunlong Cai, Minjian Zhao

引用次数: 3

A novel method of Wi-Fi indoor localization based on channel state information 基于信道状态信息的Wi-Fi室内定位新方法

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-10-01 DOI: 10.1109/WCSP.2016.7752710

Jinsong Li, Yunzhou Li, Xinsheng Ji

{"title":"A novel method of Wi-Fi indoor localization based on channel state information","authors":"Jinsong Li, Yunzhou Li, Xinsheng Ji","doi":"10.1109/WCSP.2016.7752710","DOIUrl":"https://doi.org/10.1109/WCSP.2016.7752710","url":null,"abstract":"Traditional Wi-Fi indoor localization system based on big data technique suffers from great degradation due to the instability and low space distinguish ability of received signal strength (RSS). Replacing RSS with channel state information (CSI) is proven to be an efficient method. However, not all CSI raw data contribute equally to the localization performance. The computational cost of fingerprint database is unacceptable as well. In this paper, we propose a novel method of Wi-Fi indoor localization based on CSI. A fast orthogonal search (FOS) algorithm is utilized to calculate the weights of CSI raw data collected from the wireless network interface card (NIC), reducing the database at the same time. Different weights of the features are then used as the input of a back-propagation (BP) neural network, conducting weighted training. We implement the system and experimentally evaluate its performance in the typical laboratory scenario. The performance of the proposed system is compared with several existing systems. Result shows that the proposed system has a 13% improvement in accuracy and a 14% improvement in execute time. The average distance error is 1.5702m.","PeriodicalId":158117,"journal":{"name":"2016 8th International Conference on Wireless Communications & Signal Processing (WCSP)","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130630339","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: 14