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  Subjects -> ENGINEERING (Total: 2284 journals)
    - CHEMICAL ENGINEERING (192 journals)
    - CIVIL ENGINEERING (184 journals)
    - ELECTRICAL ENGINEERING (102 journals)
    - ENGINEERING (1208 journals)
    - ENGINEERING MECHANICS AND MATERIALS (389 journals)
    - HYDRAULIC ENGINEERING (55 journals)
    - INDUSTRIAL ENGINEERING (65 journals)
    - MECHANICAL ENGINEERING (89 journals)

ENGINEERING (1208 journals)                  1 2 3 4 5 6 7 | Last

Showing 1 - 200 of 1205 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 7)
3D Research     Hybrid Journal   (Followers: 19)
AAPG Bulletin     Hybrid Journal   (Followers: 5)
AASRI Procedia     Open Access   (Followers: 15)
Abstract and Applied Analysis     Open Access   (Followers: 3)
Aceh International Journal of Science and Technology     Open Access   (Followers: 2)
ACS Nano     Full-text available via subscription   (Followers: 226)
Acta Geotechnica     Hybrid Journal   (Followers: 7)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 5)
Acta Polytechnica : Journal of Advanced Engineering     Open Access   (Followers: 2)
Acta Scientiarum. Technology     Open Access   (Followers: 3)
Acta Universitatis Cibiniensis. Technical Series     Open Access  
Active and Passive Electronic Components     Open Access   (Followers: 7)
Adaptive Behavior     Hybrid Journal   (Followers: 11)
Adıyaman Üniversitesi Mühendislik Bilimleri Dergisi     Open Access  
Adsorption     Hybrid Journal   (Followers: 4)
Advanced Engineering Forum     Full-text available via subscription   (Followers: 6)
Advanced Science     Open Access   (Followers: 5)
Advanced Science Focus     Free   (Followers: 3)
Advanced Science Letters     Full-text available via subscription   (Followers: 6)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 7)
Advanced Synthesis & Catalysis     Hybrid Journal   (Followers: 17)
Advances in Artificial Neural Systems     Open Access   (Followers: 4)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 7)
Advances in Engineering Software     Hybrid Journal   (Followers: 25)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 15)
Advances in Fuzzy Systems     Open Access   (Followers: 5)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 10)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 21)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 25)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Natural Sciences: Nanoscience and Nanotechnology     Open Access   (Followers: 28)
Advances in Operations Research     Open Access   (Followers: 11)
Advances in OptoElectronics     Open Access   (Followers: 5)
Advances in Physics Theories and Applications     Open Access   (Followers: 12)
Advances in Polymer Science     Hybrid Journal   (Followers: 41)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Remote Sensing     Open Access   (Followers: 37)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aerobiologia     Hybrid Journal   (Followers: 1)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 4)
AIChE Journal     Hybrid Journal   (Followers: 29)
Ain Shams Engineering Journal     Open Access   (Followers: 5)
Akademik Platform Mühendislik ve Fen Bilimleri Dergisi     Open Access  
Alexandria Engineering Journal     Open Access   (Followers: 1)
AMB Express     Open Access   (Followers: 1)
American Journal of Applied Sciences     Open Access   (Followers: 28)
American Journal of Engineering and Applied Sciences     Open Access   (Followers: 11)
American Journal of Engineering Education     Open Access   (Followers: 9)
American Journal of Environmental Engineering     Open Access   (Followers: 16)
American Journal of Industrial and Business Management     Open Access   (Followers: 23)
Analele Universitatii Ovidius Constanta - Seria Chimie     Open Access  
Annals of Combinatorics     Hybrid Journal   (Followers: 3)
Annals of Pure and Applied Logic     Open Access   (Followers: 2)
Annals of Regional Science     Hybrid Journal   (Followers: 7)
Annals of Science     Hybrid Journal   (Followers: 7)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applicable Analysis: An International Journal     Hybrid Journal   (Followers: 1)
Applied Catalysis A: General     Hybrid Journal   (Followers: 6)
Applied Catalysis B: Environmental     Hybrid Journal   (Followers: 9)
Applied Clay Science     Hybrid Journal   (Followers: 4)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 12)
Applied Magnetic Resonance     Hybrid Journal   (Followers: 3)
Applied Nanoscience     Open Access   (Followers: 7)
Applied Network Science     Open Access  
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Physics Research     Open Access   (Followers: 3)
Applied Sciences     Open Access   (Followers: 2)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 4)
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 5)
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 4)
Archives of Foundry Engineering     Open Access  
Archives of Thermodynamics     Open Access   (Followers: 7)
Arid Zone Journal of Engineering, Technology and Environment     Open Access  
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
ASEE Prism     Full-text available via subscription   (Followers: 3)
Asian Engineering Review     Open Access  
Asian Journal of Applied Science and Engineering     Open Access   (Followers: 1)
Asian Journal of Applied Sciences     Open Access   (Followers: 2)
Asian Journal of Biotechnology     Open Access   (Followers: 8)
Asian Journal of Control     Hybrid Journal  
Asian Journal of Current Engineering & Maths     Open Access  
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 8)
Assembly Automation     Hybrid Journal   (Followers: 2)
at - Automatisierungstechnik     Hybrid Journal   (Followers: 1)
ATZagenda     Hybrid Journal  
ATZextra worldwide     Hybrid Journal  
Australasian Physical & Engineering Sciences in Medicine     Hybrid Journal   (Followers: 1)
Australian Journal of Multi-Disciplinary Engineering     Full-text available via subscription   (Followers: 2)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Avances en Ciencias e Ingeniería     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 1)
Bangladesh Journal of Scientific and Industrial Research     Open Access  
Basin Research     Hybrid Journal   (Followers: 3)
Batteries     Open Access   (Followers: 4)
Bautechnik     Hybrid Journal   (Followers: 1)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 23)
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 3)
BER : Manufacturing Survey : Full Survey     Full-text available via subscription   (Followers: 2)
BER : Motor Trade Survey     Full-text available via subscription   (Followers: 1)
BER : Retail Sector Survey     Full-text available via subscription   (Followers: 2)
BER : Retail Survey : Full Survey     Full-text available via subscription   (Followers: 2)
BER : Survey of Business Conditions in Manufacturing : An Executive Summary     Full-text available via subscription   (Followers: 3)
BER : Survey of Business Conditions in Retail : An Executive Summary     Full-text available via subscription   (Followers: 3)
Bharatiya Vaigyanik evam Audyogik Anusandhan Patrika (BVAAP)     Open Access   (Followers: 1)
Biofuels Engineering     Open Access  
Biointerphases     Open Access   (Followers: 1)
Biomaterials Science     Full-text available via subscription   (Followers: 9)
Biomedical Engineering     Hybrid Journal   (Followers: 16)
Biomedical Engineering and Computational Biology     Open Access   (Followers: 13)
Biomedical Engineering Letters     Hybrid Journal   (Followers: 5)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 17)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 32)
Biomedical Engineering: Applications, Basis and Communications     Hybrid Journal   (Followers: 5)
Biomedical Microdevices     Hybrid Journal   (Followers: 8)
Biomedical Science and Engineering     Open Access   (Followers: 3)
Biomedizinische Technik - Biomedical Engineering     Hybrid Journal  
Biomicrofluidics     Open Access   (Followers: 4)
BioNanoMaterials     Hybrid Journal   (Followers: 2)
Biotechnology Progress     Hybrid Journal   (Followers: 39)
Boletin Cientifico Tecnico INIMET     Open Access  
Botswana Journal of Technology     Full-text available via subscription  
Boundary Value Problems     Open Access   (Followers: 1)
Brazilian Journal of Science and Technology     Open Access   (Followers: 2)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 10)
Bulletin of Canadian Petroleum Geology     Full-text available via subscription   (Followers: 14)
Bulletin of Engineering Geology and the Environment     Hybrid Journal   (Followers: 3)
Bulletin of the Crimean Astrophysical Observatory     Hybrid Journal  
Cahiers, Droit, Sciences et Technologies     Open Access  
Calphad     Hybrid Journal  
Canadian Geotechnical Journal     Hybrid Journal   (Followers: 14)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 41)
Case Studies in Engineering Failure Analysis     Open Access   (Followers: 8)
Case Studies in Thermal Engineering     Open Access   (Followers: 3)
Catalysis Communications     Hybrid Journal   (Followers: 6)
Catalysis Letters     Hybrid Journal   (Followers: 2)
Catalysis Reviews: Science and Engineering     Hybrid Journal   (Followers: 8)
Catalysis Science and Technology     Free   (Followers: 6)
Catalysis Surveys from Asia     Hybrid Journal   (Followers: 3)
Catalysis Today     Hybrid Journal   (Followers: 5)
CEAS Space Journal     Hybrid Journal  
Cellular and Molecular Neurobiology     Hybrid Journal   (Followers: 3)
Central European Journal of Engineering     Hybrid Journal   (Followers: 1)
CFD Letters     Open Access   (Followers: 6)
Chaos : An Interdisciplinary Journal of Nonlinear Science     Hybrid Journal   (Followers: 2)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Engineering     Open Access   (Followers: 2)
Chinese Science Bulletin     Open Access   (Followers: 1)
Ciencia e Ingenieria Neogranadina     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencias Holguin     Open Access   (Followers: 1)
CienciaUAT     Open Access  
Cientifica     Open Access  
CIRP Annals - Manufacturing Technology     Full-text available via subscription   (Followers: 11)
CIRP Journal of Manufacturing Science and Technology     Full-text available via subscription   (Followers: 14)
City, Culture and Society     Hybrid Journal   (Followers: 21)
Clay Minerals     Full-text available via subscription   (Followers: 9)
Clean Air Journal     Full-text available via subscription   (Followers: 2)
Coal Science and Technology     Full-text available via subscription   (Followers: 3)
Coastal Engineering     Hybrid Journal   (Followers: 11)
Coastal Engineering Journal     Hybrid Journal   (Followers: 4)
Coatings     Open Access   (Followers: 3)
Cogent Engineering     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 4)
Color Research & Application     Hybrid Journal   (Followers: 1)
COMBINATORICA     Hybrid Journal  
Combustion Theory and Modelling     Hybrid Journal   (Followers: 13)
Combustion, Explosion, and Shock Waves     Hybrid Journal   (Followers: 13)
Communications Engineer     Hybrid Journal   (Followers: 1)
Communications in Numerical Methods in Engineering     Hybrid Journal   (Followers: 2)
Components, Packaging and Manufacturing Technology, IEEE Transactions on     Hybrid Journal   (Followers: 26)
Composite Interfaces     Hybrid Journal   (Followers: 6)
Composite Structures     Hybrid Journal   (Followers: 254)
Composites Part A : Applied Science and Manufacturing     Hybrid Journal   (Followers: 179)
Composites Part B : Engineering     Hybrid Journal   (Followers: 228)
Composites Science and Technology     Hybrid Journal   (Followers: 193)
Comptes Rendus Mécanique     Full-text available via subscription   (Followers: 2)
Computation     Open Access  
Computational Geosciences     Hybrid Journal   (Followers: 13)
Computational Optimization and Applications     Hybrid Journal   (Followers: 7)
Computational Science and Discovery     Full-text available via subscription   (Followers: 2)
Computer Applications in Engineering Education     Hybrid Journal   (Followers: 6)
Computer Science and Engineering     Open Access   (Followers: 17)
Computers & Geosciences     Hybrid Journal   (Followers: 28)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 5)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 4)
Computers and Geotechnics     Hybrid Journal   (Followers: 10)
Computing and Visualization in Science     Hybrid Journal   (Followers: 5)
Computing in Science & Engineering     Full-text available via subscription   (Followers: 30)
Conciencia Tecnologica     Open Access  
Concurrent Engineering     Hybrid Journal   (Followers: 3)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 6)
Control and Dynamic Systems     Full-text available via subscription   (Followers: 8)
Control Engineering Practice     Hybrid Journal   (Followers: 42)
Control Theory and Informatics     Open Access   (Followers: 7)
Corrosion Science     Hybrid Journal   (Followers: 25)
CT&F Ciencia, Tecnologia y Futuro     Open Access  

        1 2 3 4 5 6 7 | Last

Journal Cover Broadcasting, IEEE Transactions on
  [SJR: 1.114]   [H-I: 62]   [10 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 0018-9316
   Published by IEEE Homepage  [191 journals]
  • IEEE Transactions on Broadcasting
    • Abstract: Provides a listing of current staff, committee members and society officers.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • IEEE Transactions on Broadcasting information for authors
    • Abstract: Provides a listing of current committee members and society officers.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • A Layer-Mixed FEC Scheme for Scalable Media Transmission Over Mobile TV
           Services
    • Authors: Lijun Zhang;Yue Li;Peng Cheng;Mingqi Li;
      Pages: 309 - 320
      Abstract: This paper proposes a novel method for layered media transmission in mobile broadcast systems, which is referred to as the layer-mixed forward error correction (FEC). Unlike the existing unequal error protection and layer-aware FEC which decode each layer symbols with a probability, the new approach is capable of decoding each layer data deterministically as long as enough symbols are received corresponding to the specific layer. The lower layer is always decoded prior to upper layers, which facilitates the delivery of scalable media stream, especially in mobile TV services with heterogeneous networks and terminals. In order to evaluate the performance fairly, this paper compares the minimum channel capacity required by several FEC schemes. The experimental results show that the new approach outperforms the existing schemes in severely degraded channel situations.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • Field Trial of LTE eMBMS Network for TV Distribution: Experimental Results
           and Analysis
    • Authors: Ahmad Awada;Ekkehard Lang;Olaf Renner;Karl-Josef Friederichs;Swen Petersen;Kerstin Pfaffinger;Benjamin Lembke;Roland Brugger;
      Pages: 321 - 337
      Abstract: In recent years, the advances in mobile network technologies have revolutionized the paradigm how the users receive video and audio content. With the rise of smart phones and tablets having large screens, users have become more interested than anytime before in watching linear and non-linear TV programs on their mobile devices. This is because the users can fetch nowadays the content using their mobile devices at anytime and any place they are located. Facing this phenomenon, broadcasters are looking for new means to reach the users of digital natives that are interested in watching TV on their mobile devices. As most mobile devices are based on a global 3rd generation partnership project standard, the enhanced multimedia broadcast multicast system (eMBMS) of long term evolution (LTE) network is foreseen as one potential candidate for delivering broadcast services. In order to investigate the capability and limitations of today's LTE eMBMS network, a field trial was carried out in Munich, Germany. This paper describes the setup of the field trial and presents a comprehensive analysis of the LTE eMBMS technology with respect to performance and future enhancements. The measurement data is compared against simulation models for field strength and path loss of each transmitter, eMBMS useful field strength and received power, and signal-to-interference and noise ratio (SINR). Moreover, the performance of cyclic prefix (CP) durations that are longer than the standardized values of 16.67 us and 33.33 us is evaluated using the calibrated simulation models. Results have shown that the simulation models can adequately predict the measurement data. Moreover, it is shown that a CP duration of 66.67 us provides a gain in SINR and achieves the best tradeoff in terms of maximum user velocity and performance in networks with limited inter-site distance.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • End-to-End Distortion-Based Multiuser Bandwidth Allocation for Real-Time
           Video Transmission Over LTE Network
    • Authors: Hui Yuan;Huayong Fu;Ju Liu;Jimin Xiao;
      Pages: 338 - 349
      Abstract: Long Term Evolution (LTE) network is widely used in video transmission because of its high-speed communication capacity. In this paper, an end-to-end distortion-based bandwidth allocation method for multiusers is proposed to enhance video transmission performance of the LTE network. For an LTE network, since throughput is observed as an independent variable which can affect the packet loss ratio, and thus affect the transmission distortion, the end-to-end distortion model is first derived by taking throughput into account. Then, based on the derived end-to-end distortion model, the bandwidth allocation problem is formulated as a convex optimization problem and solved by Karush-Kuhn-Tucker conditions. Simulation results demonstrate the effectiveness of the proposed method. The rate distortion performance of the proposed method is better than the average bandwidth allocation method under different bandwidth utilizations, and is very close to the exhaustive search-based method.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • Scalable Video Coding-based MIMO Broadcasting System With Optimal Power
           Control
    • Authors: Yong I. Choi;Chung G. Kang;
      Pages: 350 - 360
      Abstract: This paper presents a scalable video coding (SVC)-based open-loop multi-input multioutput (MIMO) scheme for broadcast services such as LTE broadcast/evolved multimedia broadcast multicast service and terrestrial broadcast TV/ATSC 3.0. It intends to guarantee the minimum essential information (as a base layer) and obtain additional information for improving the video quality (as enhancement layers) when multiple transmit and receive antennas are employed. Two types of SVC-based open-loop MIMO broadcasting schemes are considered: 1) SVC-MIMO-time division multiplexing (TDM) and 2) SVC-MIMO-spatial multiplexing (SM). They provide differentiated video quality that depends on the average channel gain of individual users by employing different modulation and coding scheme (MCS) levels for unequal error protection of individual layers, i.e., a lower MCS level for the base layer and a higher MCS level for the enhancement layers. In particular, SVC-MIMO-SM extends the per-layer service coverage by performing a block-wise successive interference cancellation (SIC) from the base layer up to the highest enhancement layer in the receiver. As a result, the base layer can be decoded with the most robust MCS while the enhancement layers can be decoded with an SIC diversity gain. Furthermore, we formulate an optimal power allocation problem for the SVC-MIMO-SM scheme that can maximize the average system utility function while ensuring the target service coverage. Optimal solutions for different cases are derived by identifying the Karush-Kuhn-Tucker conditions for the given problem. Our numerical results demonstrate that the optimal power allocation provides more average system utility gain than SVC-MIMO-TDM and SVC-MIMO-SM without power control schemes, indicating the enhancement in the per-layer service coverage performance.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • A Novel Iterative OFDMA Channel Estimation Technique for DOCSIS 3.1 Uplink
           Channels
    • Authors: Tung T. Nguyen;Brian Berscheid;Ha H. Nguyen;J. Eric Salt;
      Pages: 361 - 375
      Abstract: This paper presents an orthogonal frequency division multiple access (OFDMA) channel estimation technique that jointly considers the effects of coarse timing error and multipath propagation. Many conventional approaches only consider an optimistic scenario where timing synchronization is perfect and each of the channel delays is an integer number of system samples. In realistic scenarios timing offsets and echo delays are not integer multiples of the system's sampling period. This leads to poor estimation and consequently reduces the system's overall performance. This paper proposes a novel iterative channel estimation technique, which considers the practical scenario of fractional timing error and nonsample-spaced echo delays. The proposed method does not require channel state information (e.g., second-order statistics of the channel impulse responses or the noise power). Moreover, timing error can be conveniently obtained with the proposed technique. Simulation results show that, when comparing OFDMA channel estimation techniques under realistic data over cable service interface specification 3.1 channel conditions, the proposed algorithm significantly outperforms all conventional methods known to the authors.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • Pipeline Network Coding-Based Multipath Data Transfer in Heterogeneous
           Wireless Networks
    • Authors: Changqiao Xu;Peng Wang;Chunshan Xiong;Xinpeng Wei;Gabriel-Miro Muntean;
      Pages: 376 - 390
      Abstract: Multipath transmission control protocol (MPTCP) has attracted significant attention from standardization bodies, industrial communities, and academic communities. However, an important performance-related aspect is that MPTCP is negatively affected by packet reordering, especially in heterogeneous wireless environments. Although to improve the protocol, the proposed updated scheduling policies and congestion control methods do not solve the problem fundamentally. In this context, by breaking the strong binding between data packets and their sequence numbers, network coding has been demonstrated to be a promising solution for end-to-end multipath transmissions. However, current network coding solutions are based on batch coding without exception, and encoding and decoding operations cannot proceed unless all packets of a group have arrived. In addition, frequent generation and transmission of coding coefficients increase the delay and waste the already limited bandwidth. This paper proposes a novel pipeline network coding-based MPTCP (MPTCP-PNC) which reduces encoding and decoding delay and saves bandwidth by using innovative economic coding coefficient rules. Based on these, a quality-based distribution scheme and a corresponding transmission management policy are introduced to further improve the performance of MPTCP-PNC. Simulation tests involving video delivery over a multi-path distribution network show how MPTCP-PNC outperforms other state-of-art network coding solutions.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • Mobile Multi-Source High Quality Multimedia Delivery Scheme
    • Authors: Bogdan Ciubotaru;Cristina Hava Muntean;Gabriel-Miro Muntean;
      Pages: 391 - 403
      Abstract: Increasing amount of multimedia content is being delivered over heterogeneous networks to diverse user types, holding various devices, many of them mobile. Mobile devices such as smartphones and tablets have already become both consumers and sources of multimedia content, but the delivery quality varies widely, especially due to their users' mobility. In order to support increasing the quality of the multimedia content delivered to a growing number of mobile users, this paper introduces a mobile multi-source high quality multimedia delivery scheme (M3QD). M3QD supports efficient high quality multimedia content delivery to mobile users from multiple sources. Both simulations and prototyping-based perceptual tests show how increased user perceived video quality and improved mobility support is achieved when using M3QD in comparison with the case when a single source classic approach is employed. M3QD can be used in various scenarios involving multimedia content distribution between mobile users in leisure parks or around tourist attractions, content exchange between vehicles on urban roads and even information delivery in industrial applications, where content has to be shared between large number or diverse mobile users.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • Utilizing Dictionary Learning and Machine Learning for Blind Quality
           Assessment of 3-D Images
    • Authors: Wujie Zhou;Weiwei Qiu;Ming-Wei Wu;
      Pages: 404 - 415
      Abstract: In recent years, perceptual objective quality assessment of 3-D images has become an intense focus of research. In this paper, we propose an efficient blind 3-D image quality assessment (IQA) metric that utilizes binocular vision-based dictionary learning (DL) and k-nearest-neighbors (KNN)-based machine learning (ML) to more accurately align with human subjective judgments. More specifically, in the DL stage, histogram representations from the local patterns of simple and complex cells are concatenated to form basic feature vectors. Then, by using a collaborative representation algorithm, the learned binocular quality-aware features of the distorted 3-D image can be efficiently represented by a linear combination of only a few of these basic feature vectors. In the ML stage, we intuitively simulate the complex high-level behaviors of human perceptual activity with KNN-based ML, which transfers the weighted human subjective quality scores from the annotated 3-D images to the query 3-D image. Our results using three standard subject-rated 3-D-IQA databases confirm that the proposed metric consistently aligns with the subjective ratings and outperforms many representative blind metrics.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • A Low Complexity PAPR Reduction Method Based on FWFT and PEC for OFDM
           Systems
    • Authors: Ce Kang;Yi Liu;Meixia Hu;Hailin Zhang;
      Pages: 416 - 425
      Abstract: Orthogonal frequency division multiplexing (OFDM) is a multi-carrier modulation technique for transmitting large volumes of digital data but suffers high peak-to-average power ratio (PAPR) at the transmitter. In this paper, we propose a PAPR reduction technique based on the combination of a low complexity transform-Fast Walsh-Hadamard and Fourier transform (FWFT) and the parameter-adjustable piecewise exponential companding (PEC). To reduce algorithm complexity, FWFT uses a fast orthonormal unitary transform to calculate both the Walsh-Hadamard transform (WHT) and the discrete Fourier transform (DFT). In FWFT, WHT realizes precoding to OFDM signals and as a result the PAPR is reduced first. Moreover, the parameter-adjustable PEC transform is adopted to further reduce PAPR by transforming the statistics of the companded signal into exponential distribution with adjustable parameters. Simulation results show that the hybrid method achieves significant PAPR reduction and improves the BER performance of OFDM systems when used in multipath fading channels.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • 22.2 ch Audio Encoding/Decoding Hardware System Based on MPEG-4 AAC
    • Authors: Takehiro Sugimoto;Yasushige Nakayama;Tomoyasu Komori;
      Pages: 426 - 432
      Abstract: A 22.2 multichannel (22.2 ch) sound system has been adopted as an audio system for 8K Super Hi-Vision (8K). The 22.2 ch sound system is an advanced sound system composed of 24 channels three-dimensionally located in a space to envelop listeners in an immersive sound field. NHK has been working on standardizing and developing an 8K broadcasting system via a broadcasting satellite in time for test broadcasting in 2016. For an audio coding scheme, NHK developed a world-first 22.2 ch audio encoding/decoding hardware system (22.2 ch audio codec) capable of real time encoding/decoding. The fabricated 22.2 ch audio codec is based on MPEG-4 AAC and was assembled into the 8K codec together with the 8K video codec and the multiplexer. The audio quality of the fabricated 22.2 ch audio codec was assessed in an objective evaluation, and the evaluation results revealed the operational bit rates of the fabricated codec. An 8K satellite broadcasting experiment was carried out as a final verification test of the 8K broadcasting system, and 22.2 ch audio codec was found to be valid.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • Wireless Multimedia Transmission Through Cooperative Spectrum Sharing With
           Quantized Feedback
    • Authors: Li-Chung Lo;Wan-Jen Huang;Yi-Wei Yao;
      Pages: 433 - 439
      Abstract: A cooperative spectrum-sharing strategy is proposed for a hierarchical multimedia network consisting of a cellular base station transmitting high-priority (HP) data to a user equipment (UE) and multiple device-to-device (D2D) connection pairs which transmit low-priority (LP) signal to offload the cellular data traffic. In implementing the proposed strategy, the precoding design at each D2D transmitter is performed in such a way as to enhance the strength of the HP signal and minimize the interference caused at the UE by the D2D transmission. Furthermore, in accordance with the quantized signal-to-noise ratio (SNR) information reported by the UE for the cellular downlink, each D2D transmitter selects the power allocation factor which maximizes the D2D transmission rate while simultaneously satisfying the outage probability constraint for the HP signal. Having chosen the precoding vectors and power allocation factor for each D2D connection, the D2D transmitter which achieves the maximum D2D transmission rate is selected in a distributed manner via opportunity carrier sensing. The effectiveness of the proposed spectrum-sharing strategy is investigated by means of computer simulations. The results confirm that for most SNR regimes, the proposed strategy successfully meets the outage constraint on the HP signal while simultaneously maximizing the achievable rate of the LP signal.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • Low-Complexity PTS Schemes Using Dominant Time-Domain Samples in OFDM
           Systems
    • Authors: Young-Jeon Cho;Kee-Hoon Kim;Jun-Young Woo;Kang-Seok Lee;Jong-Seon No;Dong-Joon Shin;
      Pages: 440 - 445
      Abstract: Partial transmit sequence (PTS) is a probabilistic peak-to-average power ratio (PAPR) reduction scheme for orthogonal frequency division multiplexing (OFDM) signals, but it requires an exhaustive search for the one with the minimum PAPR over all alternative OFDM signal vectors. In order to reduce such computational complexity, it was proposed that the PAPR value of each alternative OFDM signal vector is approximately estimated by using dominant time-domain samples selected based on a simple metric. In this paper, two new effective metrics for selecting dominant time-domain samples are proposed for low-complexity PTS scheme. For further lowering the computational complexity, two low-complexity PTS schemes are proposed by sorting the dominant time-domain samples in decreasing order of their metric values. Simulation results confirm that compared with the conventional PTS scheme, the proposed PTS schemes show identical PAPR reduction performance with substantially reduced computational complexity.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • 2017 IEEE Broadcast Symposium
    • Pages: 446 - 446
      Abstract: Describes the above-named upcoming special issue or section. May include topics to be covered or calls for papers.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
  • Streaming into the Future
    • Pages: 447 - 448
      Abstract: Describes the above-named upcoming special issue or section. May include topics to be covered or calls for papers.
      PubDate: June 2017
      Issue No: Vol. 63, No. 2 (2017)
       
 
 
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