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As one approach to improving reading literacy, visual novels can be an option. Visual novels are a type of game that focuses on the story aspect. The story of the visual novel game will run according to the choices made by the player. This game can make players feel happy while increasing interest in reading literacy. This research is a development research with a waterfall development model starting from data collection and processing, application design, application implementation and testing, analysis of test results, and application maintenance. This research aims to create a visual novel game by applying the Decision tree algorithm. The choices made by the player in the game are based on this algorithm. The game is then tested through black-box testing and white-box testing. Based on these tests, this visual novel game can perform all the functionalities well. [ABSTRACT FROM AUTHOR]

The performance and the quality of the provided service of cellular networks can be well determined by the network capacity and the coverage. Good coverage means fewer calls blocking probability, and lower outage during handing-off process. Due to the fading that occurs during signal transmission, the practical cell radius may be less than the radius estimated when considering only the path loss. Therefore, the best design is that consider the probability of cell-edge coverage and the mobile station location variability. This paper addresses the effects of mobile location and antenna heights on cellular network coverage. The paper presents a reliable cell coverage model that considers the mobile position variation in shadowing environments. The proposed model accuracy and the cell coverage probability were simulated with the modified two-ray radio propagation model. The proposed model is applied to predict the cell converge fraction considering shadowing, antennas height, mobile stations location variability, and receiver sensitivity. The simulation results show that the mobile location variability is directly proportional with carrier frequency. Rural environments introduce more location variability than urban environments. Results show that base stations provided with higher antenna can result in better cell coverage percentage and less shadowing effect. For the cellular network designed so that 90% of locations at the cell edge have a reliable coverage, the path loss due to shadowing effects is about 6.9 dB in urban areas, while it is about 8.12 dB in suburban environment. [ABSTRACT FROM AUTHOR]

In this paper we have investigated the reliability of millimeter wave (mm-wave) radio channel as an indoor solution for 5G network. We have studied the properties of these signals throughout a pre-specified environment. The aim is to assess the performance of these bands as a potential candidate for wireless broadband high data rate. Due to their different propagation characteristics as well as shorter wavelength, it introduces many challenges on the road of 5G standardization. However, this might be compensated by beamforming as well as larger antenna array. Penetration loss is a serious issue in mm-wave band due to their shorter wavelength, therefore, many candidate solutions could be used according to the requirement. Network densification could increase user experience by bringing the excess point closer to users, which will reduce their relative path loss. Beamforming is a mean to concentrate the beam and improve power conveyed in the transmitted signal. The results of ray-tracing simulation show that densification in mm-wave band can improve the coverage probability and provide better signal to indoor users. Furthermore, the indoor solution is a great choice in order to improve user experience and quality of service. [ABSTRACT FROM AUTHOR]

Cellular phones face issues of low signal power and reduced call quality when intended to use in the interior environment. Though the traditional method of using distributed antenna systems, somehow overcomes this issue but has many limitations too. As a result, this paper suggested a model that address the shortcomings of the previously described method by implementing a wireless framework to curb the reduced signal quality in indoor communication. In the proposed protocol, we have designed a compact, low-power cellular base station called Femtocells, which helps service providers or base stations to extend indoor service coverage and provide better signal quality. This can be used in both residential and enterprise areas. These cellular access points provide communication between the local Femtocells are essentially a form of the cellular access point that provides communication between the mobile phones and internet. The algorithm used behind this is AODV Routing Protocol and it operates in two different phases: Route Discovery and Route maintenance mechanism. The primary task of femtocells is to allocate the vacant spectrum to its users from the main base station by using the cognitive radio technology. Thus, the users can communicate efficiently without any drop calls even when the signal strength is very less as femtocells effectively extend the cell coverage and capacity. When compared to Distributed Antenna System, the proposed technique is completely wireless, low cost and guarantees signal strength to a greater extend. [ABSTRACT FROM AUTHOR]

This paper discusses mobile communication on 4G networks in rainy conditions. Rain conditions cause rain attenuation which reduces the transmitted signal in mobile communications. The range of the transmitted signal can be increased by dividing it into smaller cells in order to maintain a good signal known as femtocells. Coverage of femtocells for this research is at a distance below 30 meters between base transceiver station (BTS) under line of sight (LOS) conditions. This is minimum average coverage with a power transmission up to 108 dBm (normal transmission of the receiver) for direct measurement. The synthesis measurement (driver test) in rain condition needed more power up to 25 dBm. [ABSTRACT FROM AUTHOR]

Femtocell networks have been considered to be a key technology to improve the capacity of cellular systems. However, femtocell networks are usually deployed in indoor environment. Therefore, femtocell placement problems are the most important issue to solve in planning a wireless network, since the conventional manual planning processes is highly inefficient. This paper presents an approach for solving femtocell placement problems in an indoor environment using particle swarm optimization (PSO). The main objective is to select the best position of the femtocell so as to maximize indoor downlink capacity. In a 100 trial study, optimization improved the average SNR up to 3.5 dB. It is shown that the approach is efficient and effective. In conclusion, the approach algorithm is able to improve the throughput of femtocell networks. [ABSTRACT FROM AUTHOR]

Femtocells are fully customized deployed base stations. They are being deployed in the macrocell cellular network in order to improve the indoor coverage and provide better user experience. Nevertheless, the randomly deployed femtocell poses a number of challenges, among the most critical is the interference as the achievable data rates and capacity depends mainly on the interference mitigation by the femtocell network. In this study, a self organizing solution combined with power control mechanism is proposed as the interference mitigation scheme for Long Term Evolution (LTE) femtocell network. The notion is based on adjusting the femtocell's transmission power and based on interference power received at femtocell downlink, in order to reduce the interference between femtocells. The power adjustment is controlled and based on some basic factors such as number of femtocells and distance between the femtocells and subscribers. The performance evaluation of real time services is conducted in terms of Packet Loss Ratio (PLR) and throughput. [ABSTRACT FROM AUTHOR]