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Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)最新文献

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Frame Expansion Based Peak to Average Power Ratio Reduction in MIMO OFDM Systems 基于帧扩展的MIMO OFDM系统峰值/平均功率比降低
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387518
Guoguang Chen, R. Ansari
{"title":"Frame Expansion Based Peak to Average Power Ratio Reduction in MIMO OFDM Systems","authors":"Guoguang Chen, R. Ansari","doi":"10.1109/SIPS.2007.4387518","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387518","url":null,"abstract":"The integration of Orthogonal Frequency Division Multiplexing (OFDM) into Multiple Input Multiple Output (MIMO) systems is regarded as a promising technology to provide high performance in fourth generation (4G) broadband wireless communication systems. However, the inherent drawback of large Peak-to-Average Power Ratio (PAPR) for OFDM carries over to MIMO systems. This paper examines the use of Erasure Pattern Selection (EPS) developed for Single Input Single Output (SISO) systems for the task of reducing PAPR in MIMO-OFDM systems. A MIMO-EPS scheme is proposed for minimizing the peak power value over all antennas, which is shown to produce a PAPR reduction gain around 1.5dB for 2 transmit antennas compared with the conventional MIMO-OFDM. The scheme is analyzed to show its significant performance advantages and lower computational complexity compared with an existing SeLective Mapping (SLM) scheme.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"3 1","pages":"61-66"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88911824","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
An Efficient Data-Aided Initial Frequency Synchronizer for DVB-S2 一种有效的数据辅助DVB-S2初始频率同步器
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387625
J. Park, M. Sunwoo, Pansoo Kim, D. Chang
{"title":"An Efficient Data-Aided Initial Frequency Synchronizer for DVB-S2","authors":"J. Park, M. Sunwoo, Pansoo Kim, D. Chang","doi":"10.1109/SIPS.2007.4387625","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387625","url":null,"abstract":"This paper presents an efficient initial frequency synchronizer for DVB-S2. An initial frequency offset of the DVB-S2 is around ±5 MHz, which represents 20% of the symbol rate at 25 Mbaud. To estimate a large initial frequency offset, the algorithm which can provide a large estimation range is required. Through the analysis of the Data-aided (DA) algorithms, we find that the Mengali and Moreli (M&M) algorithm can estimate a large initial frequency offset at low SNR. Based on the algorithm, we propose an efficient initial frequency synchronizer to reduce hardware complexity. The proposed architecture can reduce about 68% multipliers, 55% arctan units and 54% adder/subtractors compared with the direct implementation. The proposed architecture has been thoroughly verified using a FPGA board having the the XilinxTM Virtex II.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"46 17","pages":"645-650"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/SIPS.2007.4387625","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72422780","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
Stride History Image: A New Feature Representation for Pedestrian Identification 步幅历史图像:一种新的行人识别特征表示
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387606
Shi Chen, Youxing Gao
{"title":"Stride History Image: A New Feature Representation for Pedestrian Identification","authors":"Shi Chen, Youxing Gao","doi":"10.1109/SIPS.2007.4387606","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387606","url":null,"abstract":"We describe representations of gait appearance features for the purpose of pedestrian identification. We construct two kinds of scalar valued spatiotemporal templates in 2D images, backward stride history image (bSHI) and forward stride history image (fSHI), to represent how change of pedestrian silhouettes is evolved. To define the stride length and ensure an invariant analysis due to differences in gait period, we perform a gait period estimation procedure using nonlinear analysis beforehand. We make use of a family of multi-layer windows to capture SHI image signature in the form of combined moment feature vectors for individual identification. The proposed approach achieves identification capability by an 86.56% CCR on Soton database and improvements are seen with respect to other methods.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"64 1","pages":"543-547"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76828622","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
An Effective Algorithm for Guiding Mobile Nodes in Wireless Sensor Networks 一种有效的无线传感器网络中移动节点引导算法
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387558
G. Song, W. Zhuang, Zhigang Wei, Aiguo Song
{"title":"An Effective Algorithm for Guiding Mobile Nodes in Wireless Sensor Networks","authors":"G. Song, W. Zhuang, Zhigang Wei, Aiguo Song","doi":"10.1109/SIPS.2007.4387558","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387558","url":null,"abstract":"In order to better control the mobile nodes in wireless sensor networks, an effective navigation algorithm is proposed in this paper. The static nodes are used as beacons. The methods of topology credits and TDOA (time difference of arrival) are adopted. Credits of nodes are used to create topology of the networks. Meanwhile, the TDOA method is used to calculate the distance of neighbor nodes to determine the next turning angle. Simulation and experimental results show that the proposed algorithm is effective in navigating the mobile nodes precisely to the region of interest. The comparison between the proposed algorithm and the VFF (virtual force field) method shows that the former has better performance in guiding mobile nodes in wireless sensor networks.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"123 1","pages":"279-282"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75743010","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
Application of Unimodular Filterbanks for Audio Coding 单模滤波器组在音频编码中的应用
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387609
A. Vijayakumar, G. Abhilash
{"title":"Application of Unimodular Filterbanks for Audio Coding","authors":"A. Vijayakumar, G. Abhilash","doi":"10.1109/SIPS.2007.4387609","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387609","url":null,"abstract":"This paper contains the application of Unimodular Filterbanks (UMFBs) based on two new structures for audio coding. Two key properties make UMFBs ideal for audio coding applications. Firstly, they have the lowest possible system delay of M ¿ 1 samples, where M is the number of channels. This property resolves the problem of pre-echoes. Secondly, the presence of nilpotent matrix in the structure furnishes unequal lengths of analysis and synthesis filters to adapt to perceptual limits; long analysis filters for good frequency selectivity and short synthesis filters for noise reduction. The proposed structures ensure perfect reconstruction (PR) and are of minimum delay in the McMillan sense. The number of free parameters is as low as 2M and the optimal set of parameters can be obtained with unconstrained optimization. The low computational overhead makes it suitable for simple and efficient hardware implementation. We have also carried out a brief study of the quantization noise shaping with the proposed structures.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"60 1","pages":"556-561"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76021808","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
Robust Region-of-Interest Scalable Coding with Leaky Prediction in H.264/AVC H.264/AVC中具有泄漏预测的鲁棒感兴趣区域可伸缩编码
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387572
Qian Chen, Li Song, Xiaokang Yang, Wenjun Zhang
{"title":"Robust Region-of-Interest Scalable Coding with Leaky Prediction in H.264/AVC","authors":"Qian Chen, Li Song, Xiaokang Yang, Wenjun Zhang","doi":"10.1109/SIPS.2007.4387572","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387572","url":null,"abstract":"We propose a region-of-interest (ROI) coding framework based on leaky prediction (LP) for robustly transporting H.264 video over error-prone network. The LP-based ROI coding can remove error drift caused by the destruction in the decoded background from the proposed system, with guaranteed ROI quality throughout. Experimental results show that this scheme enables the decoder to reconstruct the ROI with better quality and the global video frame with improved quality even if the background bitstream cannot be correctly received or completely lost.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"12 1","pages":"357-362"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73114783","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
Effect of Number Representation on the Achievable Minimum Number of Operations in Multiple Constant Multiplications 数表示对多重常数乘法可实现的最小运算次数的影响
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387585
L. Aksoy, Ece Olcay Günes, E. Costa, P. Flores, J. Monteiro
{"title":"Effect of Number Representation on the Achievable Minimum Number of Operations in Multiple Constant Multiplications","authors":"L. Aksoy, Ece Olcay Günes, E. Costa, P. Flores, J. Monteiro","doi":"10.1109/SIPS.2007.4387585","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387585","url":null,"abstract":"In this work, we analyze the effect of representing constants under binary, CSD, and MSD representations on the minimum number of operations required in a multiple constant multiplications problem. To this end, we resort to a recently proposed algorithm that computes the exact minimum solution. To extend the applicability of this algorithm to much larger instances, we propose problem reduction and model simplification techniques that significantly reduce the search space. We have conducted experiments on a rich set of instances including randomly generated and FIR filter instances. The results show that, contrary to common belief, the binary representation clearly yields better solutions than CSD, and even provides slightly better solutions than MSD. Moreover, the superiority of the binary solutions increases as the number and bit-width of the constants increase.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"14 1","pages":"424-429"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86340555","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
A New Inter-View Prediction Method for Multi-View Video Coding 一种新的多视点视频编码间视点预测方法
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387568
Zhu Gang, Yang Ping, Yun He
{"title":"A New Inter-View Prediction Method for Multi-View Video Coding","authors":"Zhu Gang, Yang Ping, Yun He","doi":"10.1109/SIPS.2007.4387568","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387568","url":null,"abstract":"Multi-view Video Coding (MVC) is a fundamental encoding technique for FTV (free-viewpoint television), 3DTV (3D television) and surveillance. Efficient MVC requires coding algorithms exploiting temporal as well as inter-view dependencies between cameras. Assisted by the camera parameters the inter-view dependencies can be properly utilized. We propose in this paper a new inter-view prediction method based on camera parameters. The comparative test results based on the JSVM software platform are shown.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"2016 1","pages":"337-340"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86583465","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
Synthesis of DSP Architectures Using Libraries of Coarse-Grain Configurations 基于粗粒度配置库的DSP体系结构综合
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387594
P. Salmela, Chung-Ching Shen, S. Bhattacharyya, J. Takala
{"title":"Synthesis of DSP Architectures Using Libraries of Coarse-Grain Configurations","authors":"P. Salmela, Chung-Ching Shen, S. Bhattacharyya, J. Takala","doi":"10.1109/SIPS.2007.4387594","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387594","url":null,"abstract":"The implementation of real-time signal processing applications calls for parallelism to avoid unpractical clock frequencies and to lower power consumption. In this paper, a method for exploring the design space of parallel elementary computing resources is proposed. The method can be used to find a suitable set of computing resources for processors applying instruction level parallelism (ILP) or pure hardware designs. The extensive size of the design space is coped with coarse level modeling and evaluation. The method presents the system as a union of multisets of computing resources. This formulation provides a general framework for efficient, multi-objective optimization in terms of relevant cost metrics, including processing latency, area, and power consumption. We demonstrate this framework by developing a multiobjective evolutionary algorithm based on it, and applying this algorithm to a rake receiver application.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"48 1","pages":"475-480"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79562005","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
Stable Noise Subspace Estimation Algorithm Suitable for VLSI Implementation 适合VLSI实现的稳定噪声子空间估计算法
Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014) Pub Date : 2007-11-21 DOI: 10.1109/SIPS.2007.4387613
Lu Yang, S. Attallah, G. Mathew
{"title":"Stable Noise Subspace Estimation Algorithm Suitable for VLSI Implementation","authors":"Lu Yang, S. Attallah, G. Mathew","doi":"10.1109/SIPS.2007.4387613","DOIUrl":"https://doi.org/10.1109/SIPS.2007.4387613","url":null,"abstract":"The aim of this paper is twofold: 1) to stabilize a fast adaptive noise subspace algorithm, which was proposed earlier in the literature under the name of FRANS algorithm; and 2) to present a low computational cost version that is free from any square root and division operations, which is very suitable for VLSI implementation. A theoretical mean-square analysis and simulation results are also given in order to assess the performance of this algorithm.","PeriodicalId":93225,"journal":{"name":"Proceedings. IEEE Workshop on Signal Processing Systems (2007-2014)","volume":"92 1","pages":"579-583"},"PeriodicalIF":0.0,"publicationDate":"2007-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76370127","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
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