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Papers by Cedrick Manirafasha

Research paper thumbnail of Industrial Temperature Monitoring in Wireless Sensor Networks

Journal of Emerging Technologies and Innovative Research, 2018

Wireless Sensor Networks (WSN) networks consist of nodes that are deployed in the environment and... more Wireless Sensor Networks (WSN) networks consist of nodes that are deployed in the environment and can interact with it by sensing or controlling physical parameters. These nodes have to associate to fulfill their tasks as a single node is limited in doing so, and they use wireless communication to exchange data among them and the receiver also known as a sink. In industries, monitoring temperature is a vital process. Due to machines working, a small variation in temperature may damage the machines and put people's lives at risk. In this paper, the temperature is monitored using two nodes. First, two nodes are designed, the user interface is designed, and finally, the temperature from two nodes is monitored.

Research paper thumbnail of HOW LI-FI WILL IMPROVE THE RELIABILITY OF INTERNET OF THINGS: A REVIEW

Light fidelity (Li-Fi) is a new technology that applies light as a medium and offers a speed that... more Light fidelity (Li-Fi) is a new technology that applies light as a medium and offers a speed that is higher than the current wi-fi that we have. Li-Fi uses light as trans-receivers. Internet of Things (IoT) is a ubiquitous network where objects (things) are connected together to share data among them. In IOT, devices have to connect instantly to carry out their tasks efficiently. To achieve this, a very wide bandwidth is required because any delay would make people’s lives at risk. This paper is subdivided into 3 parts. First, we will examine how Li-Fi works and its requirements, Second, We will look at what requires IoT to accomplish its work, and finally discuss on how Li-Fi would improve the behavior of IoT.

Research paper thumbnail of RELIABILITY OF RSSI-BASED RANGING TECHNIQUE IN WSN

In wireless sensor Networks (WSN), nodes can either be static or mobile. When a node is static, i... more In wireless sensor Networks (WSN), nodes can either be static or mobile. When a node is static, its location is easily identified but when dynamic (mobile), its location's awareness becomes challenging. The Received signal strength Indicator is one of the ranging techniques that exist. In this paper, RSSI is examined to check its reliability in indoor and outdoor sensor localization.

Research paper thumbnail of PCB inspection using machine vision system

Over the years, PCB industry has been improving in accuracy, smaller dimensions taken and new com... more Over the years, PCB industry has been improving in accuracy, smaller dimensions taken and new components introduced. Human inspection is slow, costly and time consuming which is totally different from machine vision system where accuracy is the main goal. A machine vision for printed circuit board (PCB) inspection is presented. Self printing with accuracy, components placements and components soldering are the 3 main processes involved in PCB manufacturing. A simple machine vision system will consist of the following: An optical sensor ,A black-and-white camera, Lighting, Camera interface card for computer, known as "frame grabber" ,Computer software to process images, Digital signal hardware or a network connection to report results. In this paper, threshold and XOR comparison techniques are used to explain clearly how two PCB can be compared and detect defects whatsoever of a tested PCB from an original PCB.

Research paper thumbnail of 5G WIRELESS COMMUNICATIONS-THE IDEAL CANDIDATE FOR FUTURE INTERNET OF THINGS

Internet of Things (IoT) is a Ubiquitous network in which all things in a network are connected t... more Internet of Things (IoT) is a Ubiquitous network in which all things in a network are connected together remotely using sensors in order to share data. Techniques like Device to Device (D2D), Machine to Machine (M2M) communication give us a clear view on how IoT works. The fifth generation of wireless communications (5G) is the next generation that is expected to offer high data rates and improved Quality of Service (QoS). Millimeter wave (mm wave), massive MIMO, Cognitive networks, Visible Light Communication (VLC), and NOMA are key technologies that will facilitate us to reach 5G's expectations. Research is undergoing on how 5G architecture would be, how devices handling 5G would be designed and how IoT would be implemented in 5G. In this paper, IoT, its requirements, and key technologies of 5G are studied at first and then, how 5G would be the ideal candidate for IoT is discussed towards the later part of the paper.

Teaching Documents by Cedrick Manirafasha

Research paper thumbnail of SIX SIGMA What you need to Know

Six Sigma (6σ) is a set of techniques and tools for process improvement. It is a methodology used... more Six Sigma (6σ) is a set of techniques and tools for process improvement. It is a methodology used for eliminating defects in a product, process or a particular service at a rate of 3.4 Defects Per Million Opportunities. In this document, basic of Six Sigma is highlighted, sigma process calculation is done and various metrics and belts are discussed at the end.

Research paper thumbnail of Performance of Wireless Vs Performance of Wire-line communication Systems

To analyze the performance of wireless communication systems

Research paper thumbnail of Evolution of Wireless Communication Systems (1G to 5G)

Wireless communication has faced a number of various improvements. Increasing data rate and reduc... more Wireless communication has faced a number of various improvements. Increasing data rate and reducing latency were and are still the main goals to move from one generation to another. In this paper, Technologies used from the very first generation (1G) to the upcoming fifth generation (5G) (expected to hit the market by the year 2020) are discussed and compared.

Research paper thumbnail of Industrial Temperature Monitoring in Wireless Sensor Networks

Journal of Emerging Technologies and Innovative Research, 2018

Wireless Sensor Networks (WSN) networks consist of nodes that are deployed in the environment and... more Wireless Sensor Networks (WSN) networks consist of nodes that are deployed in the environment and can interact with it by sensing or controlling physical parameters. These nodes have to associate to fulfill their tasks as a single node is limited in doing so, and they use wireless communication to exchange data among them and the receiver also known as a sink. In industries, monitoring temperature is a vital process. Due to machines working, a small variation in temperature may damage the machines and put people's lives at risk. In this paper, the temperature is monitored using two nodes. First, two nodes are designed, the user interface is designed, and finally, the temperature from two nodes is monitored.

Research paper thumbnail of HOW LI-FI WILL IMPROVE THE RELIABILITY OF INTERNET OF THINGS: A REVIEW

Light fidelity (Li-Fi) is a new technology that applies light as a medium and offers a speed that... more Light fidelity (Li-Fi) is a new technology that applies light as a medium and offers a speed that is higher than the current wi-fi that we have. Li-Fi uses light as trans-receivers. Internet of Things (IoT) is a ubiquitous network where objects (things) are connected together to share data among them. In IOT, devices have to connect instantly to carry out their tasks efficiently. To achieve this, a very wide bandwidth is required because any delay would make people’s lives at risk. This paper is subdivided into 3 parts. First, we will examine how Li-Fi works and its requirements, Second, We will look at what requires IoT to accomplish its work, and finally discuss on how Li-Fi would improve the behavior of IoT.

Research paper thumbnail of RELIABILITY OF RSSI-BASED RANGING TECHNIQUE IN WSN

In wireless sensor Networks (WSN), nodes can either be static or mobile. When a node is static, i... more In wireless sensor Networks (WSN), nodes can either be static or mobile. When a node is static, its location is easily identified but when dynamic (mobile), its location's awareness becomes challenging. The Received signal strength Indicator is one of the ranging techniques that exist. In this paper, RSSI is examined to check its reliability in indoor and outdoor sensor localization.

Research paper thumbnail of PCB inspection using machine vision system

Over the years, PCB industry has been improving in accuracy, smaller dimensions taken and new com... more Over the years, PCB industry has been improving in accuracy, smaller dimensions taken and new components introduced. Human inspection is slow, costly and time consuming which is totally different from machine vision system where accuracy is the main goal. A machine vision for printed circuit board (PCB) inspection is presented. Self printing with accuracy, components placements and components soldering are the 3 main processes involved in PCB manufacturing. A simple machine vision system will consist of the following: An optical sensor ,A black-and-white camera, Lighting, Camera interface card for computer, known as "frame grabber" ,Computer software to process images, Digital signal hardware or a network connection to report results. In this paper, threshold and XOR comparison techniques are used to explain clearly how two PCB can be compared and detect defects whatsoever of a tested PCB from an original PCB.

Research paper thumbnail of 5G WIRELESS COMMUNICATIONS-THE IDEAL CANDIDATE FOR FUTURE INTERNET OF THINGS

Internet of Things (IoT) is a Ubiquitous network in which all things in a network are connected t... more Internet of Things (IoT) is a Ubiquitous network in which all things in a network are connected together remotely using sensors in order to share data. Techniques like Device to Device (D2D), Machine to Machine (M2M) communication give us a clear view on how IoT works. The fifth generation of wireless communications (5G) is the next generation that is expected to offer high data rates and improved Quality of Service (QoS). Millimeter wave (mm wave), massive MIMO, Cognitive networks, Visible Light Communication (VLC), and NOMA are key technologies that will facilitate us to reach 5G's expectations. Research is undergoing on how 5G architecture would be, how devices handling 5G would be designed and how IoT would be implemented in 5G. In this paper, IoT, its requirements, and key technologies of 5G are studied at first and then, how 5G would be the ideal candidate for IoT is discussed towards the later part of the paper.

Research paper thumbnail of SIX SIGMA What you need to Know

Six Sigma (6σ) is a set of techniques and tools for process improvement. It is a methodology used... more Six Sigma (6σ) is a set of techniques and tools for process improvement. It is a methodology used for eliminating defects in a product, process or a particular service at a rate of 3.4 Defects Per Million Opportunities. In this document, basic of Six Sigma is highlighted, sigma process calculation is done and various metrics and belts are discussed at the end.

Research paper thumbnail of Performance of Wireless Vs Performance of Wire-line communication Systems

To analyze the performance of wireless communication systems

Research paper thumbnail of Evolution of Wireless Communication Systems (1G to 5G)

Wireless communication has faced a number of various improvements. Increasing data rate and reduc... more Wireless communication has faced a number of various improvements. Increasing data rate and reducing latency were and are still the main goals to move from one generation to another. In this paper, Technologies used from the very first generation (1G) to the upcoming fifth generation (5G) (expected to hit the market by the year 2020) are discussed and compared.