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2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)最新文献

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Characterization of optimal input distributions for Gaussian-mixture noise channels 高斯混合噪声信道最优输入分布的表征
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255146
Hung V. Vu, N. Tran, M. C. Gursoy, T. Le-Ngoc, S. I. Hariharan
{"title":"Characterization of optimal input distributions for Gaussian-mixture noise channels","authors":"Hung V. Vu, N. Tran, M. C. Gursoy, T. Le-Ngoc, S. I. Hariharan","doi":"10.1109/CWIT.2015.7255146","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255146","url":null,"abstract":"This paper addresses the characterization of optimal input distributions for the general additive quadrature Gaussian-mixture (GM) noise channel under an average power constraint. The considered model can be used to represent a wide variety of communication channels, such as the well-known Bernoulli-Gaussian and Middleton Class-A impulsive noise channels, co-channel interference in cellular communications, and cognitive radio channels under imperfect spectrum sensing. We first demonstrate that there exists a unique input distribution achieving the channel capacity and the optimal input has an uniformly distributed phase. By using the Kuhn-Tucker conditions (KTC) and Bernstein's theorem, we then demonstrate that there are always a finite number of mass points on any bounded interval in the optimal amplitude distribution. Equivalently, the optimal amplitude input distribution is discrete. Furthermore, by applying a novel bounding technique on the KTC, it is then shown that the optimal amplitude distribution has a finite number of mass points.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123682006","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
Permutation entropy for signal analysis: A case study of synthetic aperture radar imagery 信号分析中的排列熵:以合成孔径雷达图像为例
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255154
Khalid El-Darymli, E. Gill, C. Moloney, Peter F. McGuire, D. Power
{"title":"Permutation entropy for signal analysis: A case study of synthetic aperture radar imagery","authors":"Khalid El-Darymli, E. Gill, C. Moloney, Peter F. McGuire, D. Power","doi":"10.1109/CWIT.2015.7255154","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255154","url":null,"abstract":"Shannon entropy is a powerful tool for signal analysis. However, because it is based on a reductionist worldview, on its own, Shannon entropy cannot properly handle `temporal dynamics' pertaining to nonlinear and nonstationary processes. To remedy this, an extension of Shannon entropy, known as permutation entropy (PE), has been proposed in the literature. In this paper, the utility of PE for signal analysis is demonstrated on a comprehensive and real-world synthetic aperture radar dataset. When compared to conventional methods for signal analysis, the results convey the statistical significance of PE in capturing the dynamics between the constituent values of the signal.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129413475","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
Neural network associative memories with local coding 局部编码的神经网络联想记忆
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255180
A. Mofrad, Zahra Ferdosi, M. Parker, M. Tadayon
{"title":"Neural network associative memories with local coding","authors":"A. Mofrad, Zahra Ferdosi, M. Parker, M. Tadayon","doi":"10.1109/CWIT.2015.7255180","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255180","url":null,"abstract":"In this paper the approach is to embed coding techniques into neural networks in order to increase their performance as associative memories in the presence of partial erasures. The motivation comes from the recent works by Gripon and Berrou, which benefit from error correcting codes in neural networks schemes like Hopfield neural networks. The construction introduced stores messages as cliques of small size which can be retrieved in spite of partial error. We improve on the success of retrieving learnt messages by doing a local coding and by mapping codewords of a code on an extension field of G F (2) in clusters. We also use the fractal approach and a slightly different decoding scheme, which is appropriate for partial erasures, in order to reduce the complexity of retrieval. The approach is an improvement over previous methods in terms of computational complexity, and simulations show an improved error performance.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128825637","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
A new reliability-based incremental redundancy hybrid ARQ scheme using LDPC codes 一种基于LDPC码的基于可靠性的增量冗余混合ARQ方案
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255170
Hamid Saber, I. Marsland
{"title":"A new reliability-based incremental redundancy hybrid ARQ scheme using LDPC codes","authors":"Hamid Saber, I. Marsland","doi":"10.1109/CWIT.2015.7255170","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255170","url":null,"abstract":"We present a new reliability-based hybrid automatic repeat request (RB-HARQ) scheme based on low density parity check (LDPC) codes. With the proposed RB-HARQ, which uses a rate-compatible LDPC code with puncturing and extending, the longest codeword is divided into clusters of code bits. Unlike previous works, in the event of a decoding failure, the receiver measures the reliability of received clusters, instead of code bits, and determines which cluster would be most beneficial for retransmission. Several metrics to determine the best cluster candidates for retransmission are derived analytically. We show that one of the new metrics outperforms the previous metrics. We also show that even with the feedback overhead taken into account, our RB-HARQ can still result in significant gain over the previous works, provided that the cluster size is appropriately selected.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"8 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120841575","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
A DoF analysis of compress-and-forward in MIMO Gaussian relay channel with correlated noises 具有相关噪声的MIMO高斯中继信道压缩前向的自由度分析
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255181
S. A. Ayoughi, Wei Yu
{"title":"A DoF analysis of compress-and-forward in MIMO Gaussian relay channel with correlated noises","authors":"S. A. Ayoughi, Wei Yu","doi":"10.1109/CWIT.2015.7255181","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255181","url":null,"abstract":"This paper studies the effectiveness of compress-and-forward (CF) relaying scheme for a multiple-input multiple-output (MIMO) Gaussian relay channel with an out-of-band finite-capacity relay-to-destination link in which noises at the relay and destination are correlated due to common sources of interference. This scenario is motivated by the possibility of using device-to-device links for inter-cell interference mitigation in cellular networks. We characterize the necessary and sufficient conditions on the number of antennas under which the relay link rate can result in a near one-to-one improvement to the overall throughput in the high signal-to-noise-ratio and interference-to-noise-ratio regime. We show that these conditions coincide with the necessary and sufficient condition under which full cooperation between relay and destination can improve the degrees of freedom of the relay channel. Simultaneous diagonalization by *congruence enables this characterization.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"333 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133730596","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
On the mutual information of the VLC channel in the presence of external ambient lighting 外部环境光照下VLC通道互信息的研究
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255171
Stefano Pergoloni, M. Biagi, S. Colonnese, G. Scarano, R. Cusani
{"title":"On the mutual information of the VLC channel in the presence of external ambient lighting","authors":"Stefano Pergoloni, M. Biagi, S. Colonnese, G. Scarano, R. Cusani","doi":"10.1109/CWIT.2015.7255171","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255171","url":null,"abstract":"Visible Light Communications (VLC) represent a new frontier of communication allowing high data-rate Internet access, specially in indoor environments, where the use of Light Emitting Diodes is growing as a viable alternative to traditional illumination. As a result, by properly modulating light, it is possible to guarantee coexistence with illumination. One of the key challenges is the limited modulation bandwidth of sources that is typically tens of MHz. In this context, when VLC link must be optimized by using, for example, adaptive modulations, channel capacity is evaluated according to the hypothesis of Gaussian distributed input. In this paper we derive the mutual information expression when thermal noise, shot noise and ambient lighting are present so as to show the difference with the conventional Gaussian approach. More, we show the numerically evaluated mutual information when different input distributions have been taken into account.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128077693","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
Smart home automation system for intrusion detection 智能家居自动化系统的入侵检测
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255156
D. Chowdhry, R. Paranjape, P. Laforge
{"title":"Smart home automation system for intrusion detection","authors":"D. Chowdhry, R. Paranjape, P. Laforge","doi":"10.1109/CWIT.2015.7255156","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255156","url":null,"abstract":"In the area of home security and protection, vision-based home automation systems (HAS) play a significant role. In this paper, we present the design and implementation of a smart HAS with incorporated intrusion detection to minimize damages caused by burglary. In addition, the proposed HAS integrates a web server to home appliances in order to remotely access and control their status. Intrusion detection, on the other hand, uses Histogram of Oriented Gradients (HOG) feature descriptors and a Support Vector Machine (SVM) classifier for accurate human detection by smartly rejecting false alarms arising from pets. This system comprised of a simple architecture and requires no human intervention. It allows for prompt accessibility, efficient usage of electricity and provides user convenience.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122492571","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: 28
Spatial stream scheduling in uplink multiuser MIMO systems with zero-forcing post-processing 基于零强制后处理的上行多用户MIMO系统空间流调度
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255162
Aasem N. Alyahya, J. Ilow
{"title":"Spatial stream scheduling in uplink multiuser MIMO systems with zero-forcing post-processing","authors":"Aasem N. Alyahya, J. Ilow","doi":"10.1109/CWIT.2015.7255162","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255162","url":null,"abstract":"This paper considers an interference-aware user selection and resource allocation for uplink multiuser multiple-input multiple-output (MU-MIMO) systems. At the base station (BS), zero-forcing (ZF) with singular value decomposition (SVD) decoupling of spatial streams is deployed. First, two algorithms are developed for mobile stations (MS)s and their corresponding antennas assignment as well as power allocation. The objective is to maximize the total system sum rate by considering the impact of multiple access noise enhancement on the spatial stream capacity. Then, an additional scheme is proposed to maximize the weighted sum capacity of all admitted users, where the weights are chosen based on the state of users' buffers. The proposed resource allocation and scheduling algorithms operate in a reduced search space for the sub-optimum configurations targeting lower overall complexity but still offering close to optimum results in a statistical sense. Simulation results are provided to demonstrate the potential of the developed technique in terms of total system sum rate performance and the buffer behavior.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115208239","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
A novel image quality assessment metric using singular value decomposition 一种基于奇异值分解的图像质量评价方法
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255178
Syed Salman Ali
{"title":"A novel image quality assessment metric using singular value decomposition","authors":"Syed Salman Ali","doi":"10.1109/CWIT.2015.7255178","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255178","url":null,"abstract":"Image quality assessment (IQA) plays an important role in many applications such as image compression and transmission. In this paper a full referenced IQA (FR-IQA) model has been proposed which is based upon transformation based technique. Singular value decomposition (SVD) has been used to determine the basis vectors that best describe the input image signal. In contrast to other transformation based techniques such as discrete cosine transformation (DCT) and wavelet transform (WT), SVD does not use predefined basis vectors. In this paper a new methodology has been adopted in which both reference and distorted images are first combined together and then SVD is applied to compute the basis vectors. Projection coefficients of both reference and distorted images when projected onto these basis vectors have been used to calculate the final score. The proposed methodology has been tested on three publicly available image databases. The results of proposed methodology are better than most of the state of the art IQA metrics.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124675369","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
Cognitive radios for aeronautical telemetry 航空遥测用认知无线电
2015 IEEE 14th Canadian Workshop on Information Theory (CWIT) Pub Date : 2015-07-06 DOI: 10.1109/CWIT.2015.7255163
M. Rice, Jacob Frogget
{"title":"Cognitive radios for aeronautical telemetry","authors":"M. Rice, Jacob Frogget","doi":"10.1109/CWIT.2015.7255163","DOIUrl":"https://doi.org/10.1109/CWIT.2015.7255163","url":null,"abstract":"A novel modulation classifier for the three CPMs described in IRIG 106 is developed. The classifier is based on comparing histograms of measured phase shifts to the three true discrete phase shift densities using the Kullback-Leibler distance. Simulation results show that the classifier correctly identifies the true modulation for all three cases when Eb/N0 ≥ 30 dB. Even though a relative high signal-to-noise ratio is required for the classifier to operate in a satisfactory way, this method is able to correctly identify al three, in contrast to the previously published classifier devoted to the IRIG 106 modulations.","PeriodicalId":426245,"journal":{"name":"2015 IEEE 14th Canadian Workshop on Information Theory (CWIT)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126431919","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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