2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)最新文献

{"title":"Interpolating Leaf Quad Tree image compression","authors":"Luke Lincoln, R. González","doi":"10.1109/ICSPCS.2013.6723966","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723966","url":null,"abstract":"In the past, wavelet and transform based methods have dominated the field of image compression, however they bring computational complexity to the compression process and are typically more suited to high bit rate compression. The Quad Tree (QT) is a simple image compression method but is not as effective as transform based codecs, such as JPEG. This paper presents a novel variation of the QT called the Interpolating Leaf Quad Tree (ILQT). The ILQT uses QT decomposition, combined with bi-linear interpolation to better approximate image blocks. The ILQT is shown to outperform JPEG and other QT variations in Rate-Distortion (RD) tests at low bit rates, it also outperforms existing methods in terms of perceptual quality.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124075104","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}

{"title":"REAPER: Rapid Evolutionary Algorithm Prototyping and Experiment Reporting","authors":"C. N. Young, J. Zou, C. Leo","doi":"10.1109/ICSPCS.2013.6723978","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723978","url":null,"abstract":"The Rapid Evolutionary Algorithm Prototyping and Experiment Reporting (REAPER) framework presented in this paper is designed to assist in the prototyping and testing of Evolutionary Algorithms using a MATLAB Graphical User Interface (GUI). The REAPER framework provides an attractive easy-to-use alternative to current prototyping frameworks for both researchers inside and outside of the Evolutionary Computation (EC) community. The novelty in the REAPER frameworks approach is subject to the proposition that there should be an expansion of the set of criteria rapid prototyping frameworks should meet, to make them easier to use. The proposed expansion includes the current set of genericity criteria, supplemented by the addition of a set of easy-to-use criteria. The REAPER framework is compared to seven state-of-the-art EC frameworks in meeting both the genericity and the proposed easy-to-use criteria. REAPER is the only framework that satisfied all the genericity criteria and proposed easy-to-use criteria. The key attributes of REAPER are illustrated in an example, showing the complete process from the design of the objective function, and prototype algorithm, to the comparative analysis and reporting of results.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128070635","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}

{"title":"Spatial correlation from multipath with 3D power distributions having rotational symmetry","authors":"R. Kennedy, Z. Khalid, Yibeltal F. Alem","doi":"10.1109/ICSPCS.2013.6723908","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723908","url":null,"abstract":"In this paper we give a general expression for the 3D spatial correlation experienced between two sensors in 3D-space for the class of normalized power distributions (representing farfield multipath sources) having a rotational symmetry about their mean direction axis. A general expansion for the 3D spatial correlation is presented and interpreted in terms of an associated eigenfunction equation. This enables us to develop closed-form coefficient expressions for the spatial correlation for a number of distributions such as the Gauss-Weierstrass kernel based distribution and the previous known results for the von Mises-Fisher power distribution. Analytical results generated fully account for the effect of varying in the relative orientation between the sensors in 3D and the power distribution mean direction which can be arbitrarily oriented. The results provide information on placement of sensors to reduce correlation effects.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127865896","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}

{"title":"Inter-cell interference coordination using frequency block dependent transmission power control and PF scheduling in non-orthogonal access with SIC for cellular uplink","authors":"H. Katayama, Y. Kishiyama, K. Higuchi","doi":"10.1109/ICSPCS.2013.6723924","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723924","url":null,"abstract":"This paper proposes an inter-cell interference coordination (ICIC) method using frequency block-dependent transmission power control (TPC) and proportional fair (PF) scheduling in non-orthogonal access with minimum mean squared error-based linear filtering followed by a successive interference canceller (MMSE-SIC) in the cellular uplink. The proposed method uses TPC coordinated among neighboring cells based on frequency block-dependent parameters. Under this transmission power setting, the use of PF scheduling achieves the ICIC effect. In conventional fractional frequency reuse (FFR) for ICIC in the uplink, users within a cell are categorized into cell-interior and cell-edge user groups and each user group can access only a portion of the frequency blocks. This degrades the multiuser diversity gain and the throughput gain due to non-orthogonal user multiplexing, which is in general increased when the users with largely different channel conditions are multiplexed into the same frequency block. Since all the users within a cell can access all frequency blocks in the proposed method, the method abates the drawbacks of conventional FFR. Simulation results show that non-orthogonal access employing an MMSE-SIC using the proposed ICIC method significantly enhances the system-level throughput performance compared to conventional FFR. We also show the performance gain of non-orthogonal access employing the MMSE-SIC compared to orthogonal access, which is widely used in 3.9 and 4G mobile communication systems.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122561604","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}

{"title":"Two-stage scheme for geolocation using mobile sensor networks with optimal formations","authors":"Tan A. Ngo, M. Tummala, J. McEachen, James W. Scrofani","doi":"10.1109/ICSPCS.2013.6723984","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723984","url":null,"abstract":"Recent advancements in low power micro sensors and wireless network technology have enabled a host of new sensor network applications. One such application is collaborative geolocation using time difference of arrival measurements from a wireless sensor network consisting of mobile ground or airborne sensor nodes. This paper introduces a two-stage geolocation scheme that begins in an optimal bearing estimate formation and then reconfigures to a formation that yields an optimal position estimate. Using optimal sensor formations for bearing and position estimates, enables a network to obtain an optimal estimate of a target emitter's position. Through simulation the performance of such a scheme is analyzed and compared to that of a random fixed array. Its implementation on an airborne quadrotor network is also explored and is shown to be viable despite the network's unsteady node station keeping.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121732764","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}

{"title":"Deploying unlicensed wireless technologies for the smart grid: The co-existence issue","authors":"M. Baig, K. Sithamparanathan, G. Holmes","doi":"10.1109/ICSPCS.2013.6723955","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723955","url":null,"abstract":"This study catalogs the various wireless communication technologies for the smart grid, irrespective of where they are positioned in the grid, (i.e. WAN, NAN or HAN) into two distinct categories; depending upon their frequency band requirement for unlicensed or licensed operation. The licenses are regulated and can significantly contribute to the considerable delays in returns of investment and the relatively higher total cost of ownership. A cheaper and more flexible alternate is to employ wireless communication technologies that operate in the unlicensed frequency band. Experimental work has been carried to analyze the degree of degradation in performance of these unlicensed technologies in a coexisting environment. The performance metric user are the average of the Received Signal Strength Indicator (RSSI) in dBm and the Packets Error Rate (PER), which is a sum of lost packets and the packet received not ok (NACKs). The study concludes at the possibility of improving these performance metrics by proposing the use intelligent radios (Cognitive Radios).","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123367636","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}

{"title":"Flag dual amplitude pulse position modulation for atmospheric FSO communications","authors":"Aiping Huang, Jinhong Yuan, Yangyu Fan, Linwei Tao","doi":"10.1109/ICSPCS.2013.6723993","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723993","url":null,"abstract":"In this paper, we propose a novel flag dual amplitude pulse position modulation (FDAPPM) for free space optical (FSO) systems in atmospheric turbulence-induced fading channels. The proposed scheme provides low receiver complexity due to the build-in symbol synchronization and does not have the insertion/deletion errors because of the fixed symbol length. Symbol structure and transmission rate of the FDAPPM are introduced. The conditional pairwise error probability (PEP) of the FDAPPM FSO system in gamma-gamma turbulence-induced fading channels is derived, and a closed-form of the unconditional PEP in terms of Meijer G-function is presented. A high SNRs asymptotic bit error probability (BEP) of the proposed scheme is presented, and the diversity order and SNR modulation gain are also derived. Numerical results are further demonstrated to confirm the analysis of the error performance of the FDAPPM and compared with the conventional modulation schemes.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121682798","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}

{"title":"Asymptotic analysis of precoded OFDM with hierarchical modulation","authors":"B. Mouhouche, Alain A. M. Mourad, D. Ansorregui","doi":"10.1109/ICSPCS.2013.6723931","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723931","url":null,"abstract":"This paper investigates the bit error rate (BER) performance of hierarchically modulated precoded Orthogonal Frequency Division Multiplexing (OFDM). We consider a low priority stream modulated on top of a high priority stream with a constellation ratio a and analyze the resulting BER performance. Since the BER depends in a complex way on the particular precoding matrix used, it is difficult for one to gain direct insight into the performance of the hierarchically modulated system. We overcome this difficulty by resorting to the framework of large system analysis [1] in order to derive the asymptotic expression of the BER of the Minimum Mean Squared Error (MMSE) receiver. Assuming that the entries of the precoding matrix are independent and identically distributed (i.i.d) random variables, we derive the limit BER for the 4QAM and the 16QAM low priority stream cases. The limit BER is obtained by assuming that the number of OFDM sub-carriers and the number of OFDM symbols tend to infinity at the same rate. We show that the limit BER is independent of the particular realizations of the precoding matrix. Simulation results show that the asymptotic expression perfectly matches the empirical results obtained for FFT sizes as low as 256 in different channel conditions. We then use the asymptotic expression to gain useful insights into the effect of the different configuration parameters on the system performance.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121804128","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}

{"title":"Advanced MOS calculation for network based QoE Estimation of TCP streamed Video Services","authors":"Marcus Eckert, T. M. Knoll, Florian Schlegel","doi":"10.1109/ICSPCS.2013.6723923","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723923","url":null,"abstract":"Video streaming services, such as YouTube, are responsible for a major part of the transmitted data volume in the Internet and it is expected, that they will also strongly affect mobile networks. Streaming video quality mainly depends on the sustainable throughput achieved during transmission. In order to provide an acceptable video quality in mobile networks (with limited capacity resources), traffic engineering mechanisms have to be applied. For that, the streaming video quality needs to be measured and monitored permanently. In this paper we propose a network based Quality of Experience (QoE) estimation method for progressive download video, where the video file is downloaded into a buffer and played out from there. This allows for transparent monitoring without the requirement to install any monitoring tools on the users' end devices or on the server platform. Compared to already existing network based QoE estimation algorithms our method achieves a better monitoring performance with less processing effort and negligible loss in accuracy. The proposed Quality Monitoring (QMON) mechanism performs a playout buffer fill level estimation based on TCP flow observation in the measurement point and does a QoE evaluation based on the number and duration of occurred stalling events. The time elapsed from the last stall event to the current time is also taken into account for the calculation of the Mean Opinion Score (MOS). Besides the basic offline and online estimation method three differently powerful flavors of the estimation algorithm are presented in the paper. The QMON method has already been implemented and covers a wide range of video codecs like the highly compressing h.264 codec which is mainly used in the MP4 container as well as the new VP8 codec provided by Google in WebM container based download services. The former commonly used Flash Video service type is supported as well. The cutting edge scalable video codecs like Dynamic Adaptive Streaming over HTTP (DASH) also known as MPEG-DASH or Scalable Video Codec (SVC) are targeted too with the QMON method and are considered in this paper within a conceptual study.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134416996","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}

{"title":"Unequal error protection of H.264/AVC video bitstreams based on the motion energy estimation for group of pictures","authors":"P. H. Dung, S. Vafi","doi":"10.1109/ICSPCS.2013.6723956","DOIUrl":"https://doi.org/10.1109/ICSPCS.2013.6723956","url":null,"abstract":"A multi-level error protection technique for H.264/AVC video bitstreams is proposed. Error protection levels for video frames are determined based on frames' motion activities and the importance of the Group of Pictures (GOP) containing the considered frames. The motion activity of a frame is evaluated by the majority of macroblocks having high motion energy, which is defined as the energy necessary for macroblocks movement between two consecutive frames. Then, the importance of a GOP is determined based on the estimation of motion energy of previous GOPs. Simulation results show that the proposed technique provides better video quality compared to other GOP-based Unequal Error Protection (UEP) techniques.","PeriodicalId":294442,"journal":{"name":"2013, 7th International Conference on Signal Processing and Communication Systems (ICSPCS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133365282","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}