Preliminary feature and performace comparision between 3GPP LTE Release 8 and IEEE 802.16m

One of the challenges of the mobile industry is to cope with the growth of mobile traffic demand expected for the next years, primarily driven by the increasing usage of mobile video services. Indeed, the existence of increasingly powerful terminals is encouraging the consumption of high-quality video content. Usually, video services are identified with linear Television (TV) and scheduled broadcast (point-to-multipoint (p-t-m)) distribution. However, the consumption of video content over mobile networks is different from traditional fixed TV because contents are mainly consumed on-demand with unicast point-to-point (p-t-p) connections. Then, the convergence of linear TV and on-demand content delivery represents a challenge that requires a combined broadcast/unicast transmission model. This dissertation addresses the use of broadcasting technologies for the provision of mobile multimedia services in Fourth Generation (4G) mobile broadband networks and beyond. Specifically, the dissertation focuses on the broadcast technology included in 4G Long Term Evolution (LTE) and LTE Advanced (LTE-A) networks, known as Enhanced Multicast Broadcast Multimedia Services (eMBMS). It analyses the benefits of the eMBMS physical layer aspects regarding Multimedia Broadcast Multicast Services over a Single Frequency Network (MBSFN) deployments and identifies the current limitations of eMBMS at physical layer by comparing with the broadcast technology of the other 4G mobile system, the Institute of Electrical and Electronics Engineers (IEEE) 802.16m standard. Those limitations are the use of a dedicated carrier and Multiple-Input Multiple-Output (MIMO) techniques for broadcast transmissions. Our investigations employ a complete simulation platform including link-level and system-level simulations to evaluate the performance of broadcast transmissions in these real technologies. The research on eMBMS services is aimed at finding the optimum delivery of streaming and file download services focusing on the Radio Resource Management (RRM) problem and trade-off between Physical layer ? Forward Error Correction (PHY-FEC) and Application Layer - Forward Error Correction (AL-FEC). Concerning streaming services, results show that the use of AL-FEC increases the coverage level and, then, the maximum service data rate. The gain due to AL-FEC is greater in scenarios with high mobility users, although, this gain is limited if low zapping times are desired. Regarding file delivery services, this dissertation analyses the duration of the transmission required to guarantee the correct file reception and the reduction in the mean throughput of unicast users with different delivery modes. They are the unicast delivery, the eMBMS delivery and a hybrid approach, which combines a first eMBMS delivery with a post-delivery error repair phase with unicast transmissions. Our results show that the hybrid delivery is the most efficient configuration in terms of file download time, although it further reduces unicast performance. On the other hand, as an exemplary use case, this dissertation also investigates the use of LTE networks for the provision of vehicular safety services comparing both unicast and eMBMS delivery modes. Results highlight the significant benefits in terms of resource usage, end-to-end latency and cost delivery saving that can be achieved by using eMBMS for the delivery of road safety applications. In addition, research also addresses the problem associated with the support of road safety applications over the current eMBMS architecture, the configuration of the Intelligent Transportation Systems (ITS) server in charge of distributing safety messages as well as on its interaction with the mobile network operator. Finally, this dissertation analyzes feasible options of convergence between mobile and broadcast industry to ensure the success of the mobile broadcasting deployments in the future. A separated evolution of the broadcast technologies of both industries would lead to a scenario with two complete different industries, with different network infrastructures and business models competing for market and spectrum. This dissertation proposes an approach by which the definition of the future Fifth Generation (5G) mobile broadband communication system could bring together the cellular and broadcast industries to form a single fixed and mobile converged network and offer a full alternative to terrestrial TV broadcasting as a universal service

The International Institute of Knowledge Innovation and Invention (IIKII) is an institute that promotes the exchange of innovations and inventions, and establishes a communication platform for international innovations and researches. In 2019, IIKII cooperated with the Institute of Electrical and Electronics Engineers (IEEE) Tainan Section Sensors Council to hold IEEE conferences such as IEEE ICIASE 2019, IEEE ECBIOS 2019, IEEE ICKII 2019, ICUSA-GAME 2019, and IEEE ECICE 2019. This Special Issue entitled “Selected Papers from IIKII 2019 conferences” aims to select excellent papers from IIKII 2019 conferences, including symmetry in physics, chemistry, biology, mathematics, and computer science, etc. It selected 21 excellent papers from 750 papers presented in IIKII 2019 conferences on the topic of symmetry. The main goals of this Special Issue are to encourage scientists to publish their experimental and theoretical results in as much detail as possible, and to discover new scientific knowledge relevant to the topic of symmetry.

Long Term Evolution (LTE) network offers a high throughput with low latency that makes it the best choice for Evolved Multimedia Broadcast Multicast Service (E-MBMS). E-MBMS transmits data to all users simultaneously using the same channel and same Modulation and Coding Scheme (MCS) level. Each user experiences different channel condition, so an MCS level should be selected properly to satisfy all users. Typically, MCS level is selected on the basis of users' worst channel condition which results in wasting network resources. Since the E-MBMS performance directly depends on the selected MCS level, an efficient Adaptive Modulation and Coding (AMC) scheme is essentially needed. This paper introduces a new mechanism that uses the Standard Deviation (SD) of MCS level of E-MBMS user group operated on single cell mode to efficiently select its optimal MCS level. Simulation results show that the proposed mechanism increase the spectrum efficiency, throughput, and lower Packet Loss Ratio compared to the Worst User Channel Condition mechanism and Fixed Predefined MCS mechanism.

As part of the Very High Speed Optical Networks (VHSON) Demonstration Program, a simulator has been developed. The Scalable Coherent Interface Network Interface Functional Simulator (SCINIFS) addresses the Institute of Electrical and Electronic Engineers (IEEE) standard 1596-1992 for the Scalable Coherent Interface (SCI). In addition, SCINIFS addresses the evolving work of IEEE project P1596.6, entitled SCI Real-Time (SCI/RT). The SCI/RT project addresses extensions to IEEE Standard 1596 that seek to enhance SCI's utility for real-time fault-tolerant computing applications. SCINIFS addresses the functional behavior and performance of SCI/RT nodes when connected in a ring. The development of the simulator, early results and future work to model SCI switches are described.

This Innovative Practice full paper presents a software system which purpose is to be used to compose online laboratory experiences.Online Laboratories have improved their reliability and interoperability thanks to innovative developments proposed in recent years. New companies in this area have proposed novel interaction mechanisms such as the inclusion of immersive graphic user interfaces as well as the possibilities for access laboratory experiments as a service, having the alternative of just paying for the laboratory services demanded, for an specific class or for individual users. In terms of technology it is now possible to have multiple laboratory instances running from a single laboratory infrastructure or laboratory station. In terms of standardization, big efforts have been made by the Institute of Electrical and Electronics Engineers (IEEE) and the community of Online Laboratories to release in 2019 the first standard 18762019 - IEEE Standard for Networked Smart Learning Objects for Online Laboratories.The software system presented in this work uses a set of available resources including virtual laboratories (simulation based), local laboratory equipment, remote laboratories, laboratory activities, assessment definition and learning content (text, audio, video, etc). The system provides to the users a friendly set of tools to compose their laboratory experiences, following the IEEE 1876-2019 standard definition. The output composed laboratory experiment is saved as a Smart Laboratory Learning Object (SLLO) including mechanisms to be self-adaptable according to variables such as laboratory activities difficulty level, user previous results on the same or similar laboratory activities, and user expertise in the topic (determined based on information retrieved from the Learning Management System LMS).

Multiple input multiple output (MIMO) technique that requires multiple antennas at both transmitter and the receiver is a key technology to meet the peak data rates and spectral efficiency targets of long term evolution (LTE) systems. MIMO is a widely researched topic, and understanding of MIMO concepts have an interaction with other essential enhancement mechanisms in the system including link adaptation, resource scheduling, inter stream interference, rank of the channel, etc. This paper mainly aims to target the MIMO mode adaptation strategies in LTE systems by considering the rank and other key parameters like antenna correlation, doppler frequency, bit rate, throughput, etc. 3GPP LTE rel-8 has adopted seven MIMO modes and variable modulation and coding schemes (MCS) to effectively utilize the available resources for maximizing the throughput of the system. In this paper, new techniques for obtaining appropriate rank and a new MIMO mode switching algorithm to maximize data rate of the user equipment (UE) for a given channel consider at the receiver with reasonable complexity, and there by improving the average system throughput are proposed. The paper considers only four MIMO modes namely transmit diversity, open loop spatial multiplexing (OLSM), closed loop spatial multiplexing (CLSM) and beam-forming with different modulation levels. MIMO mode switching is done based on throughput value between open loop modes namely transmit diversity and OLSM for high mobility UE in the presence of co channel interference (CCI). Similarly, mode switching is done between closed loop modes namely CLSM and beam-forming for pedestrian UE in the presence of CCI. Simulation results are provided to illustrate the performance benefits of the proposed algorithm. The simulation results reveal that these new techniques improves the system throughput significantly.

This paper presents the link-level performance of downlink non-orthogonal multiple access (NOMA) with successive interference cancellation (SIC) receiver, considering the influence of error vector magnitude (EVM). In our evaluations, for the case of a 1-by-2 transmission and the number of NOMA multiplexed users is two, we clarify the performance of NOMA for cell-center user equipment (UE) with codeword level SIC (CWIC) receiver and the performance of the cell-edge UE, which does not apply SIC. Based on link-level performance evaluations, we show that the performance of CWIC receiver is almost the same as that of ideal SIC when the allocated transmit power ratio to cell-center UE is less than 0.35, the modulation and coding scheme (MCS) of cell-center UE is 16QAM (R = 0.51) or 64QAM (R = 0.47), and the MCS of cell-edge UE is QPSK (R = 0.51). Furthermore, we also show that, when EVM value is 4 % and the allocated power ratio to cell-center UE is between 0.2 and 0.37, the level of degradation due to the influence of EVM is below 0.6 dB, which is almost the same level of degradation as that of orthogonal frequency division multiple access (OFDMA) for the EVM value required by 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE). On the other hand, we show that the influence of EVM is marginal for cell-edge UE compared to cell-center UE. However, when the cell-center UE uses a higher order modulation such as 64QAM, we show that the required SNR of cell-edge UE increases due to the increase in inter-user interference. Based on these results, we clarify that it is important for the base station (BS) to take into account the target BLER and influence of EVM when selecting the MCS and allocated transmit power ratio of NOMA UEs.

In this paper, we investigate adaptive resource allocation in downlink transmission of orthogonal frequency division multiple access (OFDMA) networks. A block-level resource allocation scheme is developed to maximize the overall throughput of the networks. We focus on application in long term evolution (LTE) systems where all resource blocks (RB's) allocated to the same user must use the same modulation and coding scheme (MCS). The complexity of such optimization problem is usually high. In order to reduce the complexity, we divide the original optimization problem into two suboptimal ones. We first allocate appropriate RB's to users with the best channel quality and then perform power allocation. Finally, a more effective MCS is selected, which not only ensures block-error rate (BLER) performance of RB with the poor channel condition but also makes full use of the RB's with good channel condition. Simulation results show that the proposed resource allocation scheme can improve the overall throughput of the network by 20% compared with the existing scheme when the number of users is 4 and SINR = 10 dB.

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John Vig, one of the candidates for president of the IEEE (Institute of Electrical and Electronics Engineers), supports embargoed OA. From his campaign page on OA: The page includes comments from IEEE members and Vig's replies. Vince Rosati asked how Vig would prevent "a serious loss [of revenue] to IEEE".

Now that the market for electrical apparatus has become global, there are efforts underway to compare standards with an intent to harmonize these standards. The Institute of Electrical and Electronics Engineers (IEEE) has made strides in this area. Specifically, the Electric Machinery Committee (EMC) of the IEEE Power Engineering Society is at the forefront of the IEEE harmonization effort. This paper gives some historical background and summarizes the details of this effort.

Purpose The purpose of this paper is to assess the efficacy of the Institute of Electrical and Electronics Engineers (IEEE) Xplore digital library search engine to return relevant materials on information visualization pedagogy literature and to recommend search strategies to assist the digital library academic readership improve the efficacy of their search tasks. Furthermore, the results are of interest to general readers using similar digital repositories. Design/methodology/approach An initial scoping review using EBSCO Discovery services returned the number and accessibility of sources and publications-based various Boolean searches. A revised search strategy focused the search to IEEE publications as the primary source of visualization research. A corpus of keywords were extracted from the 44 relevant articles and analyzed for relevance, keyword trends and contexts of use. Findings Keyword analysis results show visualization education research is confounded by several information retrieval issues: relevancy, incomplete taxonomy, non-standard lexicon, diverse disciplines and under-representation. Recommendations include: search strategies, alternative digital collections, a potential opportunity for research in information visualization pedagogy to address this gap in an emerging field and the need for more effective interactive tools to assist with keyword selection. Research limitations/implications The study focused on the IEEE publications as the primary source of visualization research. Practical implications A repository of visualization education research that is easily findable and relevant benefits both faculty using information visualization in their teaching and academics whose work must be disseminated to the broadest audience. Strategic keyword selection, interactive keyword tools or more robust thesaurus will enable IEEE Xplore digital library users to optimize their interaction with the system. Furthermore, results suggest a need for more research in information visualization pedagogy. Originality/value This is the only study to uniquely assess the efficacy of the IEEE Xplore digital library database system to retrieve relevant visualization education literature based on keyword search.

Over the past several years a growing focus on improved electrical safety has arisen. A better understanding of both electrical shock and arc flash hazards faced by personnel working on or near energized equipment has led to consensus standards such as the NFPA-70E. These standards deal primarily with safe work practices - designed to identify and quantify the hazard, then assure that personnel are clothed with appropriate personal protective equipment (PPE) to reduce the risk. Consensus opinion among safety experts is that the best method to reduce the risk of injury is by designing the hazards out. The next frontier in reducing electrical injuries will arise from improved designs of electrical products which mitigate hazards by design. One primary product area of interest is the low-voltage motor control center used for control of motors rated 1000 volts and below. In process applications such as cement, pulp and paper and petroleum and chemical plants, maintenance personnel often find it necessary to work on, or near, energized motor control centers while performing maintenance and operational activities. This paper will review work in progress by the Institute of Electrical and Electronics Engineers (IEEE) Working Group 1683 ldquoStandard for Motor Control Centers Rated up to 1000 volts with Requirements Intended to Reduce Injuriesrdquo Working Group. This group was initially formed by the IEEE Industry Applications Society Petroleum and Chemical Industry Committee and is working on ideas to improve the functional design and test requirements for motor control centers rated up to 1000 volts ac 50/60 Hz with specified safety and reliability features. The paper will briefly review the emerging standard and advise engineers that are interested in how to get involved to offer inputs for improving the standard. Information on new safety based low-voltage motor control center designs that have been recently introduced by several manufacturers will be reviewed. The review will show how the industry is responding to the product need articulated by the user community and the IEEE 1683 Working Group for product safety by design.

Numerical calculations of exposure to magnetic field of operators of suspended hand-operated resistance welding guns were performed using the own homogeneous, flexible human body models CIOP-MAN of the 95th and 5th percentile of adult men dimensions (185 and 164 cm in height), in 16 exposure situations with various postures of operator - typical for automotive factory. An assessment concerned calculated values of an induced electric field (E in ) in the brain and the heart - according to the ICNIRP (International Commission on Non-Ionizing Radiation Protection, 2010) and the IEEE (Institute of Electrical and Electronics Engineers, 2002). The results show applicability of flexible human body models in exposure evaluation based on E in values, even homogeneous. The values of E in in the brain and the heart are up to 34% higher when calculated following ICNIRP requirements than the values calculated following the IEEE method. The values of a welding current producing a B-field in the heart area of 100 µT/50Hz (i.e. the exposure limit for cardiac pacemakers users provided by ACGIH (American Conference of Governmental Industrial Hygienists, 2016) and CENELEC standard (European Committee for Electrotechnical Standardization)) are in the range of 0.43–1.6 kA, which is significantly lower than the typical current used in the industry (5–15 kA). Cardiac pacemaker users should not operate welding guns, as a result of the individual risk assessment required by the European directive on workers' protection (Directive 2013/35/EU).

3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) Advanced standards are currently under way, where 4×4 MIMO (Multiple Input Multiple Output) scheme is the minimum structure. One of the best solutions to support the maximum data rate transmission is to adopt a MIMO scheme, especially spatial multiplexing mode, which means that each antenna port can transmit separate data. To realize this algorithm, the main issue is to cancel interferences added to each antenna port, and therefore, the algorithm at the receiver should have good performances. In the aspect of implementation, MMSE (Minimum Mean Square Error) detection algorithm is a reasonable method considering both complexity and performance. Furthermore, an iterative receiver (IR) algorithm can also be applied to this system. An IR algorithm has a tradeoff between complexity and performance. In this paper, we designed a reasonable and implementable MIMO receiver structure and showed performance for 3GPP LTE Advanced system, and verified that hard decoded bits, PIC-MMSE (Parallel Interference Cancellation - MMSE) and 1-iteration PIC are enough to meet the required SNR using the implemented test-bed system.