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Publisher: Cambridge University Press   (Total: 367 journals)

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Showing 1 - 200 of 367 Journals sorted alphabetically
Acta Neuropsychiatrica     Hybrid Journal   (Followers: 4, SJR: 0.421, h-index: 23)
Acta Numerica     Hybrid Journal   (Followers: 3, SJR: 8.044, h-index: 35)
Advances in Animal Biosciences     Full-text available via subscription   (Followers: 8)
Advances in Applied Mathematics and Mechanics     Full-text available via subscription   (SJR: 0.74, h-index: 14)
Africa     Hybrid Journal   (Followers: 19, SJR: 1.02, h-index: 28)
African Studies Review     Full-text available via subscription   (Followers: 18, SJR: 0.532, h-index: 13)
Ageing & Society     Hybrid Journal   (Followers: 38, SJR: 0.87, h-index: 55)
Agricultural and Resource Economics Review     Open Access   (Followers: 5, SJR: 0.326, h-index: 19)
AI EDAM     Hybrid Journal   (SJR: 0.438, h-index: 40)
AJS Review     Full-text available via subscription   (Followers: 2, SJR: 0.203, h-index: 4)
American Political Science Review     Hybrid Journal   (Followers: 250, SJR: 6.112, h-index: 127)
Anatolian Studies     Full-text available via subscription   (Followers: 4, SJR: 0.482, h-index: 10)
Ancient Mesoamerica     Hybrid Journal   (Followers: 10, SJR: 0.507, h-index: 29)
Anglo-Saxon England     Hybrid Journal   (Followers: 34, SJR: 0.144, h-index: 12)
animal     Hybrid Journal   (Followers: 3, SJR: 1.098, h-index: 43)
Animal Health Research Reviews     Hybrid Journal   (Followers: 3, SJR: 0.838, h-index: 41)
Animal Science     Full-text available via subscription   (Followers: 9)
Annals of Actuarial Science     Full-text available via subscription   (Followers: 1)
Annual of the British School at Athens     Full-text available via subscription   (Followers: 15, SJR: 0.101, h-index: 9)
Annual Review of Applied Linguistics     Hybrid Journal   (Followers: 36, SJR: 0.753, h-index: 22)
Antarctic Science     Hybrid Journal   (Followers: 1, SJR: 0.728, h-index: 55)
Antichthon     Full-text available via subscription   (Followers: 1, SJR: 0.126, h-index: 2)
Antiquaries J., The     Full-text available via subscription   (Followers: 8, SJR: 0.156, h-index: 3)
Antiquity     Hybrid Journal   (Followers: 27, SJR: 1.133, h-index: 54)
ANZIAM J.     Open Access   (Followers: 1, SJR: 0.151, h-index: 17)
Applied Psycholinguistics     Hybrid Journal   (Followers: 22, SJR: 1.005, h-index: 59)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 8, SJR: 0.339, h-index: 4)
Arabic Sciences and Philosophy     Hybrid Journal   (Followers: 9, SJR: 0.138, h-index: 13)
Arbor Clinical Nutrition Updates     Full-text available via subscription   (Followers: 3)
Archaeological Dialogues     Hybrid Journal   (Followers: 35, SJR: 0.67, h-index: 17)
Archaeological Reports     Full-text available via subscription   (Followers: 5, SJR: 0.101, h-index: 1)
arq: Architectural Research Quarterly     Hybrid Journal   (Followers: 7, SJR: 0.101, h-index: 3)
Asian J. of Comparative Law     Hybrid Journal   (Followers: 9, SJR: 0.127, h-index: 5)
Asian J. of Intl. Law     Hybrid Journal   (Followers: 12, SJR: 0.218, h-index: 5)
Asian J. of Law and Society     Hybrid Journal   (Followers: 7, SJR: 0.179, h-index: 3)
Astin Bulletin     Full-text available via subscription   (Followers: 1, SJR: 0.979, h-index: 19)
Australasian J. of Organisational Psychology     Hybrid Journal   (Followers: 9)
Australasian J. of Special Education     Full-text available via subscription   (Followers: 7, SJR: 0.199, h-index: 6)
Australian J. of Environmental Education     Full-text available via subscription   (Followers: 7, SJR: 0.299, h-index: 5)
Australian J. of Indigenous Education, The     Full-text available via subscription   (Followers: 10, SJR: 0.293, h-index: 4)
Australian J. of Rehabilitation Counseling     Full-text available via subscription   (Followers: 4, SJR: 0.114, h-index: 1)
Austrian History Yearbook     Full-text available via subscription   (Followers: 8, SJR: 0.127, h-index: 3)
Behavioral and Brain Sciences     Hybrid Journal   (Followers: 33, SJR: 0.826, h-index: 127)
Behaviour Change     Full-text available via subscription   (Followers: 13, SJR: 0.362, h-index: 27)
Behavioural and Cognitive Psychotherapy     Hybrid Journal   (Followers: 138, SJR: 0.831, h-index: 47)
Bilingualism: Language and Cognition     Hybrid Journal   (Followers: 37, SJR: 1.359, h-index: 33)
Biofilms     Full-text available via subscription   (Followers: 1)
Bird Conservation Intl.     Hybrid Journal   (Followers: 23, SJR: 0.831, h-index: 29)
BJPsych Advances     Full-text available via subscription   (Followers: 53)
Brain Impairment     Full-text available via subscription   (Followers: 2, SJR: 0.31, h-index: 13)
Breast Cancer Online     Full-text available via subscription   (Followers: 4)
Britannia     Full-text available via subscription   (Followers: 7, SJR: 0.112, h-index: 0)
British Actuarial J.     Full-text available via subscription  
British Catholic History     Hybrid Journal   (Followers: 1)
British J. for the History of Science     Hybrid Journal   (Followers: 20, SJR: 0.804, h-index: 21)
British J. of Anaesthetic and Recovery Nursing     Full-text available via subscription   (Followers: 8)
British J. of Music Education     Hybrid Journal   (Followers: 23, SJR: 0.391, h-index: 8)
British J. Of Nutrition     Hybrid Journal   (Followers: 73, SJR: 1.587, h-index: 139)
British J. of Political Science     Hybrid Journal   (Followers: 164, SJR: 2.505, h-index: 63)
British J. of Psychiatry     Hybrid Journal   (Followers: 179, SJR: 2.674, h-index: 178)
Bulletin of Entomological Research     Hybrid Journal   (Followers: 10, SJR: 0.918, h-index: 54)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2, SJR: 1.405, h-index: 26)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 1, SJR: 0.488, h-index: 30)
Bulletin of the School of Oriental and African Studies     Hybrid Journal   (Followers: 18, SJR: 0.122, h-index: 11)
Business and Human Rights J.     Full-text available via subscription   (Followers: 3)
Business Ethics Quarterly     Full-text available via subscription   (Followers: 13, SJR: 1.534, h-index: 46)
Business History Review     Full-text available via subscription   (Followers: 14, SJR: 0.291, h-index: 20)
Cambridge Archaeological J.     Hybrid Journal   (Followers: 125, SJR: 0.743, h-index: 32)
Cambridge Classical J.     Full-text available via subscription   (Followers: 18, SJR: 0.101, h-index: 6)
Cambridge J. of Postcolonial Literary Inquiry     Hybrid Journal   (Followers: 6)
Cambridge Law J.     Hybrid Journal   (Followers: 161, SJR: 0.173, h-index: 3)
Cambridge Opera J.     Hybrid Journal   (Followers: 5, SJR: 0.227, h-index: 9)
Cambridge Quarterly of Healthcare Ethics     Hybrid Journal   (Followers: 11, SJR: 0.295, h-index: 25)
Camden Fifth Series     Full-text available via subscription   (Followers: 3)
Canadian Entomologist     Hybrid Journal   (Followers: 5, SJR: 0.388, h-index: 34)
Canadian J. of Emergency Medicine     Hybrid Journal   (Followers: 11, SJR: 0.532, h-index: 32)
Canadian J. of Law & Jurisprudence     Full-text available via subscription   (Followers: 10)
Canadian J. of Law and Society     Hybrid Journal   (Followers: 20, SJR: 0.247, h-index: 6)
Canadian J. of Neurological Sciences     Full-text available via subscription   (SJR: 0.477, h-index: 53)
Canadian J. of Political Science/Revue canadienne de science politique     Full-text available via subscription   (Followers: 23, SJR: 1.161, h-index: 23)
Canadian J. on Aging     Hybrid Journal   (Followers: 10, SJR: 0.292, h-index: 29)
Canadian Yearbook of Intl. Law / Annuaire canadien de droit international     Full-text available via subscription   (Followers: 2)
Cardiology in the Young     Hybrid Journal   (Followers: 32, SJR: 0.312, h-index: 40)
Central European History     Full-text available via subscription   (Followers: 30, SJR: 0.201, h-index: 14)
Children Australia     Partially Free   (Followers: 2, SJR: 0.191, h-index: 2)
China Quarterly     Hybrid Journal   (Followers: 50, SJR: 1.058, h-index: 54)
Chinese J. of Agricultural Biotechnology     Full-text available via subscription   (Followers: 4)
Church History: Studies in Christianity and Culture     Full-text available via subscription   (Followers: 72, SJR: 0.113, h-index: 16)
Classical Quarterly     Full-text available via subscription   (Followers: 28, SJR: 0.151, h-index: 24)
Classical Review     Full-text available via subscription   (Followers: 24)
CNS Spectrums     Hybrid Journal   (Followers: 3, SJR: 0.885, h-index: 60)
Cognitive Behaviour Therapist     Hybrid Journal   (Followers: 13)
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4, SJR: 1.013, h-index: 35)
Communications in Computational Physics     Full-text available via subscription   (Followers: 2, SJR: 1.198, h-index: 34)
Comparative Studies in Society and History     Full-text available via subscription   (Followers: 46, SJR: 0.725, h-index: 36)
Compositio Mathematica     Full-text available via subscription   (Followers: 1, SJR: 2.965, h-index: 37)
Contemporary European History     Hybrid Journal   (Followers: 25, SJR: 0.369, h-index: 16)
Continuity and Change     Hybrid Journal   (Followers: 12, SJR: 0.266, h-index: 19)
Dance Research J.     Full-text available via subscription   (Followers: 8, SJR: 0.144, h-index: 5)
Development and Psychopathology     Hybrid Journal   (Followers: 9, SJR: 2.342, h-index: 131)
Dialogue Canadian Philosophical Review/Revue canadienne de philosophie     Full-text available via subscription   (Followers: 3, SJR: 0.126, h-index: 7)
Diamond Light Source Proceedings     Full-text available via subscription  
Disaster Medicine and Public Health Preparedness     Hybrid Journal   (Followers: 11, SJR: 0.274, h-index: 24)
Du Bois Review: Social Science Research on Race     Full-text available via subscription   (Followers: 8, SJR: 0.307, h-index: 5)
Early China     Hybrid Journal   (Followers: 3)
Early Music History     Hybrid Journal   (Followers: 8, SJR: 0.164, h-index: 8)
Earth and Environmental Science Transactions of the Royal Society of Edinburgh     Hybrid Journal   (Followers: 5, SJR: 0.325, h-index: 41)
East Asian J. on Applied Mathematics     Full-text available via subscription   (SJR: 0.424, h-index: 6)
Ecclesiastical Law J.     Full-text available via subscription   (Followers: 6, SJR: 0.1, h-index: 2)
Econometric Theory     Hybrid Journal   (Followers: 16, SJR: 2.219, h-index: 52)
Economics and Philosophy     Hybrid Journal   (Followers: 15, SJR: 0.624, h-index: 19)
Edinburgh J. of Botany     Hybrid Journal   (SJR: 0.324, h-index: 20)
Eighteenth-Century Music     Hybrid Journal   (Followers: 11, SJR: 0.1, h-index: 4)
English Language and Linguistics     Hybrid Journal   (Followers: 24, SJR: 0.387, h-index: 18)
English Profile J.     Hybrid Journal   (Followers: 2)
English Today     Hybrid Journal   (Followers: 8, SJR: 0.302, h-index: 4)
Enterprise & Society : The Intl. J. of Business History     Hybrid Journal   (Followers: 16, SJR: 0.452, h-index: 17)
Environment and Development Economics     Hybrid Journal   (Followers: 32, SJR: 0.617, h-index: 43)
Environmental Conservation     Hybrid Journal   (Followers: 58, SJR: 1.09, h-index: 66)
Environmental Practice     Full-text available via subscription   (Followers: 3, SJR: 0.304, h-index: 15)
Epidemiology & Infection     Hybrid Journal   (Followers: 15, SJR: 1.32, h-index: 85)
Epidemiology and Psychiatric Sciences     Hybrid Journal   (Followers: 3, SJR: 0.699, h-index: 28)
Episteme     Hybrid Journal   (Followers: 12, SJR: 0.678, h-index: 2)
Equine and Comparative Exercise Physiology     Full-text available via subscription   (Followers: 6)
Ergodic Theory and Dynamical Systems     Hybrid Journal   (Followers: 2, SJR: 1.456, h-index: 43)
Ethics & Intl. Affairs     Full-text available via subscription   (Followers: 13, SJR: 0.464, h-index: 6)
European Constitutional Law Review (EuConst)     Full-text available via subscription   (Followers: 31, SJR: 1.269, h-index: 15)
European J. of Applied Mathematics     Hybrid Journal   (SJR: 0.939, h-index: 34)
European J. of Sociology     Hybrid Journal   (Followers: 29, SJR: 0.241, h-index: 26)
European Political Science Review     Hybrid Journal   (Followers: 20, SJR: 0.524, h-index: 5)
European Review     Hybrid Journal   (Followers: 17, SJR: 0.119, h-index: 17)
Experimental Agriculture     Hybrid Journal   (Followers: 12, SJR: 0.486, h-index: 31)
Expert Reviews in Molecular Medicine     Hybrid Journal   (Followers: 1, SJR: 1.776, h-index: 60)
Fetal and Maternal Medicine Review     Hybrid Journal   (Followers: 4, SJR: 0.178, h-index: 14)
Financial History Review     Full-text available via subscription   (Followers: 14, SJR: 0.342, h-index: 11)
Foreign Policy Bulletin     Hybrid Journal   (Followers: 6)
Forum of Mathematics, Pi     Open Access   (Followers: 1)
Forum of Mathematics, Sigma     Open Access   (Followers: 1)
Genetics Research     Hybrid Journal   (Followers: 4, SJR: 0.52, h-index: 59)
Geological Magazine     Hybrid Journal   (Followers: 16, SJR: 1.119, h-index: 64)
Glasgow Mathematical J.     Full-text available via subscription   (Followers: 1, SJR: 0.748, h-index: 25)
Global Constitutionalism     Hybrid Journal   (Followers: 16)
Global Mental Health     Open Access   (Followers: 7)
Government and Opposition     Full-text available via subscription   (Followers: 20, SJR: 0.611, h-index: 32)
Greece & Rome     Partially Free   (Followers: 21, SJR: 0.136, h-index: 15)
Hague J. on the Rule of Law     Full-text available via subscription   (Followers: 12, SJR: 0.12, h-index: 11)
Harvard Theological Review     Full-text available via subscription   (Followers: 65, SJR: 0.237, h-index: 17)
Health Economics, Policy and Law     Hybrid Journal   (Followers: 25, SJR: 0.441, h-index: 21)
Hegel Bulletin     Full-text available via subscription   (Followers: 1)
High Power Laser Science and Engineering     Open Access   (Followers: 3)
Historical J.     Hybrid Journal   (Followers: 32, SJR: 0.337, h-index: 23)
History in Africa     Full-text available via subscription   (Followers: 8)
Horizons     Partially Free   (Followers: 1, SJR: 0.112, h-index: 3)
Industrial and Organizational Psychology     Hybrid Journal   (Followers: 20, SJR: 0.47, h-index: 18)
Infection Control and Hospital Epidemiology     Full-text available via subscription   (Followers: 34, SJR: 1.985, h-index: 108)
Intl. & Comparative Law Quarterly     Full-text available via subscription   (Followers: 196, SJR: 0.324, h-index: 25)
Intl. J. of Asian Studies     Hybrid Journal   (Followers: 12, SJR: 0.107, h-index: 1)
Intl. J. of Astrobiology     Hybrid Journal   (Followers: 2, SJR: 0.384, h-index: 18)
Intl. J. of Cultural Property     Full-text available via subscription   (Followers: 13, SJR: 0.154, h-index: 1)
Intl. J. of Disability Management Research     Full-text available via subscription   (Followers: 8, SJR: 0.179, h-index: 2)
Intl. J. of Law in Context     Hybrid Journal   (Followers: 16, SJR: 0.236, h-index: 5)
Intl. J. of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 8, SJR: 0.232, h-index: 11)
Intl. J. of Middle East Studies     Hybrid Journal   (Followers: 64, SJR: 0.501, h-index: 28)
Intl. J. of Technology Assessment in Health Care     Hybrid Journal   (Followers: 12, SJR: 0.854, h-index: 54)
Intl. J. of Tropical Insect Science     Hybrid Journal   (Followers: 1, SJR: 0.299, h-index: 20)
Intl. Labor and Working-Class History     Full-text available via subscription   (Followers: 11, SJR: 0.262, h-index: 14)
Intl. Organization     Full-text available via subscription   (Followers: 88, SJR: 3.67, h-index: 106)
Intl. Psychogeriatrics     Hybrid Journal   (Followers: 11, SJR: 1.068, h-index: 68)
Intl. Review of Social History     Full-text available via subscription   (Followers: 24, SJR: 0.185, h-index: 16)
Intl. Review of the Red Cross     Full-text available via subscription   (Followers: 10, SJR: 0.275, h-index: 10)
Intl. Theory: A J. of Intl. Politics, Law and Philosophy     Hybrid Journal   (Followers: 18, SJR: 0.774, h-index: 4)
Iraq     Full-text available via subscription   (Followers: 2)
Irish Historical Studies     Hybrid Journal   (Followers: 5, SJR: 0.101, h-index: 8)
Irish J. of Psychological Medicine     Hybrid Journal   (Followers: 2, SJR: 0.107, h-index: 14)
Israel Law Review     Hybrid Journal   (Followers: 2, SJR: 0.12, h-index: 2)
Itinerario     Full-text available via subscription   (Followers: 8, SJR: 0.195, h-index: 4)
J. of African History     Hybrid Journal   (Followers: 21, SJR: 0.381, h-index: 25)
J. of African Law     Full-text available via subscription   (Followers: 3, SJR: 0.125, h-index: 6)
J. of Agricultural and Applied Economics     Open Access   (Followers: 1)
J. of Agricultural Science     Full-text available via subscription   (Followers: 7, SJR: 0.56, h-index: 51)
J. of American Studies     Hybrid Journal   (Followers: 20, SJR: 0.133, h-index: 9)
J. of Anglican Studies     Hybrid Journal   (Followers: 6, SJR: 0.101, h-index: 1)
J. of Applied Animal Nutrition     Hybrid Journal   (Followers: 3)
J. of Asian Studies     Full-text available via subscription   (Followers: 36, SJR: 0.331, h-index: 31)
J. of Benefit-Cost Analysis     Hybrid Journal   (Followers: 2)
J. of Biosocial Science     Hybrid Journal   (Followers: 3, SJR: 0.561, h-index: 41)
J. of British Studies     Full-text available via subscription   (Followers: 30, SJR: 0.306, h-index: 23)
J. of Child Language     Hybrid Journal   (Followers: 20, SJR: 0.787, h-index: 55)
J. of Classics Teaching     Open Access  
J. of Dairy Research     Full-text available via subscription   (Followers: 7, SJR: 0.682, h-index: 60)
J. of Demographic Economics     Hybrid Journal   (Followers: 3)
J. of Developmental Origins of Health and Disease     Hybrid Journal   (Followers: 2, SJR: 0.74, h-index: 11)
J. of Diagnostic Radiography and Imaging     Hybrid Journal   (Followers: 4)
J. of Ecclesiastical History     Hybrid Journal   (Followers: 19, SJR: 0.123, h-index: 14)
J. of Economic History     Full-text available via subscription   (Followers: 45, SJR: 1.224, h-index: 44)
J. of Experimental Political Science     Full-text available via subscription   (Followers: 5)
J. of Financial and Quantitative Analysis     Full-text available via subscription   (Followers: 35, SJR: 2.998, h-index: 80)
J. of Fluid Mechanics     Hybrid Journal   (Followers: 137, SJR: 1.45, h-index: 155)
J. of French Language Studies     Hybrid Journal   (Followers: 5, SJR: 0.158, h-index: 8)
J. of Functional Programming     Hybrid Journal   (Followers: 1, SJR: 0.917, h-index: 39)

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Journal Cover APSIPA Transactions on Signal and Information Processing
  Journal Prestige (SJR): 0.339
  Citation Impact (citeScore): 4
  Number of Followers: 8  
    
  This is an Open Access Journal Open Access journal
   ISSN (Online) 2048-7703
   Published by Cambridge University Press Homepage  [367 journals]
  • Noise masking method based on an effective ratio mask estimation in
           Gammatone channels

    • Authors: Feng Bao; Waleed H. Abdulla
      Abstract: In computational auditory scene analysis, the accurate estimation of binary mask or ratio mask plays a key role in noise masking. An inaccurate estimation often leads to some artifacts and temporal discontinuity in the synthesized speech. To overcome this problem, we propose a new ratio mask estimation method in terms of Wiener filtering in each Gammatone channel. In the reconstruction of Wiener filter, we utilize the relationship of the speech and noise power spectra in each Gammatone channel to build the objective function for the convex optimization of speech power. To improve the accuracy of estimation, the estimated ratio mask is further modified based on its adjacent time–frequency units, and then smoothed by interpolating with the estimated binary masks. The objective tests including the signal-to-noise ratio improvement, spectral distortion and intelligibility, and subjective listening test demonstrate the superiority of the proposed method compared with the reference methods.
      PubDate: 2018-01-01T00:00:00.000Z
      DOI: 10.1017/ATSIP.2018.7
      Issue No: Vol. 7 (2018)
       
  • Global and local uncertainty principles for signals on graphs

    • Authors: Nathanael Perraudin; Benjamin Ricaud, David I Shuman, Pierre Vandergheynst
      Abstract: Uncertainty principles such as Heisenberg's provide limits on the time-frequency concentration of a signal, and constitute an important theoretical tool for designing linear signal transforms. Generalizations of such principles to the graph setting can inform dictionary design, lead to algorithms for reconstructing missing information via sparse representations, and yield new graph analysis tools. While previous work has focused on generalizing notions of spreads of graph signals in the vertex and graph spectral domains, our approach generalizes the methods of Lieb in order to develop uncertainty principles that provide limits on the concentration of the analysis coefficients of any graph signal under a dictionary transform. One challenge we highlight is that the local structure in a small region of an inhomogeneous graph can drastically affect the uncertainty bounds, limiting the information provided by global uncertainty principles. Accordingly, we suggest new notions of locality, and develop local uncertainty principles that bound the concentration of the analysis coefficients of each atom of a localized graph spectral filter frame in terms of quantities that depend on the local structure of the graph around the atom's center vertex. Finally, we demonstrate how our proposed local uncertainty measures can improve the random sampling of graph signals.
      PubDate: 2018-01-01T00:00:00.000Z
      DOI: 10.1017/ATSIP.2018.2
      Issue No: Vol. 7 (2018)
       
  • Spatio-temporal multidimensional collective data analysis for providing
           comfortable living anytime and anywhere

    • Authors: Naonori Ueda; Futoshi Naya
      Abstract: Machine learning is a promising technology for analyzing diverse types of big data. The Internet of Things era will feature the collection of real-world information linked to time and space (location) from all sorts of sensors. In this paper, we discuss spatio-temporal multidimensional collective data analysis to create innovative services from such spatio-temporal data and describe the core technologies for the analysis. We describe core technologies about smart data collection and spatio-temporal data analysis and prediction as well as a novel approach for real-time, proactive navigation in crowded environments such as event spaces and urban areas. Our challenge is to develop a real-time navigation system that enables movements of entire groups to be efficiently guided without causing congestion by making near-future predictions of people flow. We show the effectiveness of our navigation approach by computer simulation using artificial people-flow data.
      PubDate: 2018-01-01T00:00:00.000Z
      DOI: 10.1017/ATSIP.2018.4
      Issue No: Vol. 7 (2018)
       
  • Cooperative spectrum sensing based on adaptive activation of energy and
           preamble detector for cognitive radio networks

    • Authors: Ashish Rauniyar; Soo Young Shin
      Abstract: In this paper, we propose a new cooperative spectrum sensing method based on adaptive activation of energy detector (ED) and preamble detector (PD) for cognitive radio networks. The ED performance is highly degraded under low signal to noise ratio and noise uncertainty condition. To alleviate the problem of ED and increase the sensing performance, we have used adaptive activation of energy efficient ED and reliable PD. As the first step of our proposed method, we have used ED to take a decision in the clear region where the detector can easily make its own local decision. There are two thresholds for the measured energy in the first step. If the sensed energy in the first step is between these two thresholds, the second step which involves the activation of cooperative PD is triggered to make an appropriate decision on the presence or absence of primary users's signal. Otherwise, the second step detector PD is not activated. In this way, we can enhance the detection performance and energy efficiency by taking the collaborative advantages of ED and PD at the same time. Simulation results validate the effectiveness of our proposed method as compared with conventional schemes.
      PubDate: 2018-01-01T00:00:00.000Z
      DOI: 10.1017/ATSIP.2018.5
      Issue No: Vol. 7 (2018)
       
  • The origin of digital information devices: the Silicon Audio and its
           family

    • Authors: Akihiko Sugiyama; Masahiro Iwadare
      Abstract: This paper presents the origin of digital information devices, the Silicon Audio, and its family. The Silicon Audio is the digital counterpart of the Walkman and the ancestor of the iPod. It employs the MPEG / Audio Layer II algorithm for data compression, which was standardized by ISO (International Standardization Organization)/ IEC (International Electrotechnical Commission). A semiconductor memory card is equipped with to store the compressed signal. Since it has no mechanical movement, it is robust against shocks and vibrations that had been a serious problem for portable audio players. The background of the development, implementations, challenges toward a commercial product, and impact on audio players as well as personal information devices are discussed with its family including a video derivative, the Silicon View.
      PubDate: 2018-01-01T00:00:00.000Z
      DOI: 10.1017/ATSIP.2017.16
      Issue No: Vol. 7 (2018)
       
 
 
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