Smart buildings features and key performance indicators: A review

https://orbilu.uni.lu/bitstream/10993/44825/1/Comprehensive_survey_CRAN.pdf

A comprehensive survey on resource allocation for CRAN in 5G and beyond networks

In today's society, displays are indispensable for digital interaction and personal contact. Therefore, the development of displays is an urgent need for the next generation. Leading the commercialization trends is the development of industrial, high-resolution, portable, and multifunctional displays. Moreover, for small-size portable displays, the most critical factor affecting future applications is their flexibility. Among the various materials that can act as the channel layer, low-temperature polycrystalline silicon (LTPS) is a potential candidate for next-generation portable displays, which require high resolution and stable reliability, and which can achieve virtual reality applications. This article is a review of the development of the LTPS thin-film transistors (TFTs) on soft and flexible electronics, especially the effect of mechanical strain. This article starts by providing an overview of the difficulties in fabricating LTPS TFTs on flexible substrates. The physical mechanism corresponding to each degradation caused by mechanical stress is presented next. Finally, to support the development of the flexible technologies and realize their commercialization, methods to overcome these mechanical strain-induced degradations are reported in three different aspects by understanding the physical degradation model.

Flexible low-temperature polycrystalline silicon thin-film transistors

Price-based demand response for household load management with interval uncertainty

Cloud radio access network (C-RAN) is a promising mobile wireless sensor network architecture to address the challenges of ever-increasing mobile data traffic and network costs. C-RAN is a practical solution to the strict energy-constrained wireless sensor nodes, often found in Internet of Things (IoT) applications. Although this architecture can provide energy efficiency and reduce cost, it is a challenging task in C-RAN to utilize the resources efficiently, considering the dynamic real-time environment. Several research works have proposed different methodologies for effective resource management in C-RAN. This study performs a comprehensive survey on the state-of-the-art resource management techniques that have been proposed recently for this architecture. The resource management techniques are categorized into computational resource management (CRM) and radio resource management (RRM) techniques. Then both of the techniques are further classified and analyzed based on the strategies used in the studies. Remote radio head (RRH) clustering schemes used in CRM techniques are discussed extensively. In this research work, the investigated performance metrics and their validation techniques are critically analyzed. Moreover, other important challenges and open research issues for efficient resource management in C-RAN are highlighted to provide future research direction.

Resource Management in Cloud Radio Access Network: Conventional and New Approaches.

Recent research in cloud radio access network (C-RAN) for 5G cellular systems - A survey

In Bangladesh, electricity consumption is higher than the generation and demand of electricity is increasing day by day. Due to this, load shedding is occurring which affects the daily life. This problem can be solved by increasing generation which involves setting up new generating units and change in transmission lines, which are costly. Another approach to solve this problem is demand side management. It is a process of reducing energy consumption at user end. Using demand side management, energy consumption can be reduced at no or very little cost. At the same time, it also reduces the use of energy resources. So, environment is also less affected. Three Demand side management tools: energy efficiency, direct load control and time of use have been applied and significant amount of electrical energy can be saved using energy efficiency.

Developing demand side management program for residential electricity consumers of Dhaka city

Measurement and monitoring of overhead transmission line sag in smart grid: A review

Overhead transmission line sag is a crucial parameter that needs to be measured for safe and efficient power transmission. Due to this reason, real time measurement of transmission line sag is necessary in a smart power grid. The ability of smart grid to facilitate real-time monitoring of different power system parameters allows sag measurement and monitoring of overhead transmission lines to be integrated with smart grid system. In this paper, two sag measurement methods based on millimeter wave (mmWave) signals are proposed. The performance of the proposed methods is analyzed and compared for practical 132 kV, 230 kV and 400 kV overhead power transmission lines. The first method uses single transceiver, whereas, the second method uses multiple transceivers for measuring sag. Simulation results demonstrate that the second method shows significantly better accuracy than the first method. The performance of the communication network for establishing sag related information exchange among the devices in the proposed methods is also evaluated in this paper. Moreover, trade-offs between latency and sensitivity with bandwidth, and latency and percentage average error with number of samples are also rigorously investigated.

/pdf/millimeter-wave-based-real-time-sag-measurement-and-4ko282ym26.pdf

Millimeter Wave Based Real-Time Sag Measurement and Monitoring System of Overhead Transmission Lines in a Smart Grid

Power transmission monitoring and control are essential components of a smart grid. Power transmission capacity of an overhead transmission line is greatly dependent on the sag of the line. When the sag is lower, more power can be transmitted safely through the line. Due to this, real-time sag measurement and monitoring is important for effective transmission of power through the line. In this paper, a mmWave based sag measurement technique incorporating parabolic approximation is proposed which improves the accuracy of sag calculation. Impact of different system parameters on the calculated value of the sag is also investigated. The results show that the proposed method can achieve better accuracy even with smaller number of samples, though the accuracy degrades with error in angle of arrival.

Ayman Uddin Mahin

Papers

Recent research in cloud radio access network (C-RAN) for 5G cellular systems - A survey

Developing demand side management program for residential electricity consumers of Dhaka city

Measurement and monitoring of overhead transmission line sag in smart grid: A review

Millimeter Wave Based Real-Time Sag Measurement and Monitoring System of Overhead Transmission Lines in a Smart Grid

Millimeter Wave Based Sag Measurement Using Parabolic Approximation for Smart Grid Overhead Transmission Line Monitoring