
E. T. TchaoKwame Nkrumah University of Science and Technology | KNUST · Department of Computer Engineering
E. T. Tchao
PhD
Looking for potential collaborators on projects to leverage Blockchain, IoTs and AI 4 Food-Energy-Water nexus in Africa
About
69
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Introduction
Eric Tutu Tchao, Ph.D., is a Senior Lecturer and a Consultant in the Department of Computer Engineering, Kwame Nkrumah University of Science and Technology (KNUST), Ghana. Dr. Tchao has a PhD degree in Telecommunications Engineering from KNUST, where he worked on Analysis of MIMO Antenna Configuration Effects on WiMAX Networks Deployments.
Dr. Tchao is a Fellow of The Brew-Hammond Energy Centre, KNUST. He is also a member of IEEE Communications Society and The Internet Society.
Additional affiliations
September 2015 - present
July 2014 - present
September 2011 - August 2015
Education
October 2011 - June 2015
August 2006 - June 2010
Publications
Publications (69)
Digitization and automation have engulfed every scope and sphere of life. Internet of Things (IoT) has been the main enabler of the revolution. There still exist challenges in IoT that need to be addressed such as the limited address space for the increasing number of devices when using IPv4 and IPv6 as well as key security issues such as vulnerabl...
The integration of Internet of Things devices onto the Blockchain implies an increase in
the transactions that occur on the Blockchain, thus increasing the storage requirements.
A solution approach is to leverage cloud resources for storing blocks within the chain.
The paper, therefore, proposes two solutions to this problem. The first being an imp...
Blockchain-IIoT integration into industrial processes promises greater security, transparency, and traceability. However, this advancement faces significant storage and scalability issues with existing blockchain technologies. Each peer in the blockchain network maintains a full copy of the ledger which is updated through consensus. This full repli...
Blockchain interoperability is one of the major challenges that has sprung up with the advancement of blockchain technology. A vast number of blockchains has been developed to aid in the continuous adoption of blockchain technology. These blockchains are developed without a standard protocol, therefore making them unable to interoperate with other...
With its promise of transparency, security, and decentralization, blockchain technology faces significant challenges related to data storage and query efficiency. Current indexing methods, which often rely on structures like Merkle trees and Patricia tries, contribute to excessive storage overhead and slower query responses, particularly for full n...
Wounds contribute to 30%–42% of hospital visits and 9% of deaths but remain underreported in Africa. Diseases and surgeries increase wound prevalence, especially in rural areas where 27%–82% of people live, and health facilities are poor or non‐existent. This research aims to design a disease‐related wound classification model for online diagnosis...
The Industrial Internet of Things collects data from the environment to improve industrial processes. Data integrity, privacy, authorisation, and authentication attacks are among the security vulnerabilities in traditional IIoT networks. Blockchain is a potential solution to some of these security issues. However, the throughput of traditional bloc...
Efficient blockchain querying is crucial for unlocking the full potential of blockchain technology in diverse applications and enabling it to compete with traditional databases in data management. This
paper comprehensively analyzes existing literature and presents a taxonomy of state-of-the-art techniques
employed to optimize query efficiency in b...
Access to electricity is a cornerstone for sustainable development and is pivotal to a country's progress. The absence of electricity impedes development and elevates poverty. The first step in sustainable energy planning is accurately estimating the people's electricity demand. However, accurately estimating or modelling electricity demand for loc...
In Africa, rapid population growth and a focus on increasing food production have often overlooked the crucial aspect of food
safety, leading to the highest per capita incidences of foodborne illness globally. This underscores the imperative to address the
food safety challenges on the continent. A critical concern is the widespread adulteration of...
This review paper delves into the global agricultural food supply chains through the lens of African perspectives, examining the role of blockchain and Internet of Things (IoT) technologies in transforming food traceability. It assesses the applicability and efficacy of these innovations in addressing critical issues such as food fraud, contaminati...
Energy profligacy and appliance degradation are the apex reasons accounting for the continuous rise in power wastage and high energy bills. The decline in energy conservation and management in residences has been largely attributed to the financial implications of using intrusive methods. This work aimed to resolve the challenges of intrusive load...
The enhanced capacity of optical networks is a significant advantage within the global telecommunications industry. Optical networks provides transmission of information over large distances with reduced latency. However, the growing intricacy of network topologies poses a significant challenge to network adaptability, network resilience, device co...
The rise of generative AI requires a research agenda grounded in the African context to determine locally relevant strategies for its development and use. With a critical mass of evidence on the risks and benefits that generative AI poses to African societies, the scaled use of this new technology might help to reduce rising global inequities.
Concerns about food safety have grown across society in recent years. Building a trustworthy traceability system is essential for effectively identifying and preventing food safety issues as well as tracing the responsible parties. The entire food supply chain, which includes the stages of production, processing , warehousing, transportation, and s...
Blockchain technology has been increasingly adopted over the past few years since the introduction of Bitcoin, with several blockchain architectures and solutions being proposed. Most proposed solutions have been developed in isolation, without a standard protocol or cryptographic structure to work with. This has led to the problem of inter-operabi...
This paper presents the design of an on-chip charge pump phase-locked loop (CP-PLL)
with a fully digital defect-oriented built-in self-test (BIST) for very-high frequency (VHF)
applications. The frequency synthesizer has a 40–100 MHz tuning range and uses a ring
voltage-controlled oscillator for frequency synthesis. The PLL exhibits a phase noise o...
Since the inception of blockchain-based cryptocurrencies, researchers have been fascinated with the idea of integrating blockchain technology into other fields, such as health and manufacturing. Despite the benefits of blockchain, which include immutability, transparency, and traceability, certain issues that limit its integration with IIoT still l...
Optical networks offer a wide range of benefits to the telecommunication sector worldwide with their provision of higher bandwidth, which leads to faster data speed, longer transmission distance, and improved latency. Currently, the complexity associated with advancements in optical networks poses problems to network flexibility, reliability, and q...
Optical networks offer a wide range of benefits to the telecommunication sector world- wide with its provision of higher bandwidth which leads to faster data speed, longer transmission distance, and improved latency. Currently, the complexity associated with advancements in optical networks poses problems to network flexibility, reliability, and qu...
The increase of the Internet of Things (IoT) calls for secure solutions for industrial applications. The security of IoT can be potentially improved by blockchain. However, blockchain technology suffers scalability issues which hinders integration with IoT. Solutions to blockchain’s scalability issues, such as minimizing the computational complexit...
A recent assessment of a pilot concentrating solar power plant in Ghana noticed the failure of the tracking system to accurately align the multifaceted heliostats toward the sun and focus the sunbeams onto the target. A further review of solar tracking systems revealed the limitation of concentrated solar power tracking systems to simultaneously im...
This research presents an ultra-wideband (UWB) textile antenna design for body-centric applications. The antenna is printed on a 1 mm thick denim substrate with a 1.7 relative permittivity. The jeans substrate is sandwiched between a partial ground plane and a radiating patch with a Q-shaped slot. The slotted radiating patch is placed above the sub...
Social Internet of Things (SIoT) involves integrating social networking concepts in the Internet of Things (IoT) to enhance social interactions among IoT objects and users. SIoT is envisaged to provide adequate service selection and discovery. Trust is an essential factor whenever social concepts are discussed in communication networks. Trust usual...
This paper presents the design of an on-chip charge pump phase-locked loop (CP-PLL) with a fully digital defect oriented built-in self-test (BIST) for very-high frequency (VHF) applications. The frequency synthesizer has a 40 to 100 MHz tuning range and uses a ring voltage-controlled oscillator for frequency synthesis. The PLL exhibits a phase nois...
This paper presents the complete industrial development of a new system of a microwave device for use in S-band networks (2.45 GHz ISM band in this application): a vector network analyzer (VNA). The VNA, which is designed based on the six-port measurement principle, provides accurate measurements of both magnitude and phase of the load reflection c...
Edge detection is a fundamental process in image processing that extracts information about the image and facilitates image segmentation and feature extraction. It has many applications in various fields of computer vision. Thus, it is very necessary to understand the performance of each of these edge detectors. This paper presents a comparative st...
The traditional electrical distribution panel (or breaker panel) is a system that divides the main electrical power feed and distributes them to subsidiary circuits whiles providing a protective mechanism via the use of miniature circuit breakers, residual current devices, etc. The conventional panel distributes electrical power alright but the sys...
In this study, we present a low-profile dual-spectrum split-ring monopole that operates at industrial, scientific and medical (ISM) (2.45 GHz) band and ultrawideband (UWB) spectrum (3.1-10.6 GHz). We optimised the design for dual- band operations by using circular split-ring radiators. The coupling between both rings drives the structure to achieve...
Most applications in recent times make use of images one way or the other. As physical devices for capturing images improve, the quality and sizes of images also increase. This causes a significant footprint of images on storage devices. There is ongoing research to reduce the footprint of images on storage. Since storage is a finite resource, the...
Advances in cloud computing and distributed systems are enhancing the advantages that computing delivers to systems that can be integrated with computers due to their multitasking ability. This is already the case when discussing Smart Grid (SG). This enhancement can be applied to drive efficiency in energy management systems in electricity generat...
Electricity is one of the most crucial resources that drives any given nation's growth and development. The latest Sustainable Development Goals report indicates Africa still has a high deficit in electricity generation. Concentrating solar power seems to be a potential option to fill the deficit. That is because most of the components of concentra...
Electricity is one of the most crucial resources that drives any given nation's growth and development. The latest Sustainable Development Goals report indicates Africa still has a high deficit in electricity generation. Concentrating solar power seems to be a potential option to fill the deficit. That is because most of the components of concentra...
There are currently over 7.6 billion mobile phone connections in the world, which is approximately equivalent to the world’s population; as if to say that everyone in the world is hooked up to mobile telephony. By the next decade, it is estimated that the number of mobile phone subscribers would increase by a billion with 90% of this growth coming...
A denial of service (DoS) attack in a computer network is an attack on the availability of computer resources to prevent users from having access to those resources over the network. Denial of service attacks can be costly, capable of reaching $100,000 per hour. Development of easily-accessible, simple DoS tools has increased the frequency and redu...
Most Sub-Saharan Africa countries including Ghana experience a shortage of medical professionals, especially in the rural areas. This is mainly caused by the low-intake of students into medical schools due to inadequacy of facilities to train students. Also, a number of medical students graduate and emigrate to foreign countries to seek new opportu...
Distributed denial of service (DDoS) attacks are a major threat to any network-based service provider. The ability of an attacker to harness the power of a lot of compromised devices to launch an attack makes it even more complex to handle. This complexity can increase even more when several attackers coordinate to launch an attack on one victim. M...
There are currently over 7.6 billion mobile phone connections in the world, which is approximately equivalent to the world's population; as if to say that everyone in the world is hooked up to mobile telephony. By the next decade, it is estimated that the number of mobile phone subscribers would increase by a billion with 90% of this growth coming...
Seismic attribute which is used in extracting hidden information from seismic data to help identify prospects of potential hydrocarbon reservoirs and infer depositional environments have been used to delineate hydrocarbon prospective reservoirs in this project. Root Mean Square (RMS) amplitude and Sum of Negative Amplitude (SNA) which are good in d...
In Ghana and many countries within Sub-Sahara Africa, Long Term Evolution (LTE) is being considered for use within the sectors of Governance, Energy distribution and transmission, Transport, Education and Health. Subscribers and Governments within the region have high expectations for these new networks and want to leverage the promised enhanced co...
In Ghana and many countries within Sub-Sahara Africa, Long Term Evolution (LTE) is being considered for use within the sectors of Governance, Energy distribution and transmission, Transport, Education and Health. Subscribers and Governments within the region have high expectations for these new networks and want to leverage the promised enhanced co...
Current trends have proven that services provided by Electronic Government (e-Government) are helpful in the
realization of good governance objectives. These e-Government services leverage on modern Information and
Communication Technologies to provide an effective electronic public administration platform through which citizens and a
government’s...
Online privacy has gradually become a concern for internet users over the years as a result of the interconnection of customers devices with other devices supporting the internet technology. This research investigates and discusses the factors that influence the privacy concerns faced by online consumers of internet services and the possible outcom...
Online privacy has gradually become a concern for internet users over the years as a result of the interconnection of customers' devices with other devices supporting the internet technology. This research investigates and discusses the factors that influence the privacy concerns faced by online consumers of internet services and the possible outco...
One of the salient factors to look at during wireless network planning is developing a modified path loss prediction models to suit a new environment other than the one it was originally designed for. This helps to give accurate predictive outcomes. This paper seeks to demonstrate the effects of applying correction factors on radio propagation mode...
The adoption of Bring Your Own Device (BYOD), also known as Bring Your Own Technology (BYOT), Bring Your Own Phone (BYOP), or Bring Your Own Personal Computer (BYOPC), is a policy which allows people access to privileged resources, information and services available on the private computer network of an organization using their own personal compute...
The adoption of Bring Your Own Device (BYOD)-also known as Bring Your Own Technology (BYOT), Bring Your Own Phone (BYOP), or Bring Your Own Personal Computer (BYOPC)-is a policy which allows people access to privileged resources, information and services available on the private computer network of an organization using their own personal computer...
One of the salient factors to look at during wireless network planning is developing a modified path loss prediction models to suit a new environment other than the one it was originally designed for. This helps to give accurate predictive outcomes. This paper seeks to demonstrate the effects of applying correction factors on radio propagation mode...
Due to non-existent commercial power, unreliable power supply and high cost of running diesel generators at remote locations in Ghana, it is becoming increasingly uneconomical for network operators to maintain off-grid communication infrastructure at remote locations since subscriber numbers are relatively low in these locations. In order to surmou...
Telemedicine has become an effective means of delivering quality healthcare in the world. Across the African continent, Telemedicine is increasingly being recognized as a way of improving access to quality healthcare. The use of technology to deliver quality healthcare has been demonstrated as an effective way of overcoming geographic barriers to h...
Lake Volta is the world's largest man-made lake by surface area, and the fourth largest by water volume. Located completely within Ghana, it has a surface area of about 8502 km2 (3283 square miles). Like many other lakes on the African continent, Lake Volta is a major natural resource for Ghana, storing water for the operation of the hydroelectric...
The massive development and investment in the Ghanaian telecommunication sector and the act of deregulation in the industry has necessitated the deployment of Worldwide Inter-operability for Microwave Access (WiMAX) in the 2500-2690 MHz band to help serve the ever increasing needs of broadband internet subscribers in the country. In order to achiev...
Communication networks have undergone rapid developments in the past few decades in many Sub-Saharan African countries. The increasing number of subscribers and demand for greater variety of services in these countries make it difficult for network operators to provide the service varieties subscribers want while maintaining acceptable levels of qu...
The exponential growth in technology has impacted development programs of African nations. This has translated to two activities; (i) specific nations acquiring the technologies needed for their development, and (ii) providing the necessary skills to the cadre of technicians, technologists, and engineers to not only deploy the technologies, but as...
The widespread nature of wireless computing and communications offers the promise of many
societal and individual benefits. Consumer devices such as cell phones, PDAs and laptops have
received a lot of attention over the years, even though the impact of wireless technology is much
broader, e.g., through sensor networks for safety applications and h...
In Ghana, the increase in the adoption of e-learning methodologies is improving the way teachers and students interact. With the combination of internet, multimedia and network technologies, e-learning is changing typical teaching and learning using its methodologies to improve access to education on many university campuses. A third generation (3G...
With the increasing demand for mobile data services, Broadband Wireless
Access (BWA) is emerging as one of the fastest growing areas within mobile
communications. Innovative wireless communication systems, such as WiMAX, are
expected to offer highly reliable broadband radio access in order to meet the
increasing demands of emerging high speed data...
As part of the Government of Ghana’s plans to maximize tax mobilization, it recently integrated its Regional Collection Agencies (RCA) namely; the Internal Revenue Service (IRS), Customs Excise and Preventive service (CEPS) and the Value Added Tax (VAT) Services into the Ghana Revenue Authority (GRA). This research aims to find out whether Ghana’s...
This paper examines the implementation of Mobile Number Portability (MNP) in Ghana and presents the experiences of subscribers with the implemented MNP policy. According to a cost-benefit analysis of the portability process, it is evident that the over 19 Million Mobile subscribers satisfy the minimum market size below which overall benefits cannot...
In Ghana, mobile subscribers who weren't satisfied with the services of their mobile service providers had no option but to give up their numbers when switching service providers. As such, subscribers were reluctant to switch from their operator to a competitor thereby preventing effective competition in the Ghanaian mobile communications sector. T...
Worldwide Interoperability for Microwave Access (WiMAX) technology has gained growing interest due to its applications and advantages. It is fast emerging as a last-mile problem solution for broadband ac-cess technology. This paper presents operation scenarios for the deployment of a Fourth Generation (4G) WiMAX system in a typical sub-Saharan Afri...
A growth in the demand for WBA (wireless broadband access) technology has been seen in Ghana in the last few years.. The reason for this growth can be attributed to the emergence of the use of multimedia applications, demands for ubiquitous high-speed Internet connectivity, the massive growth in the wireless and mobile communications sector and the...