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All Journal International Journal of Electrical and Computer Engineering Bulletin of Electrical Engineering and Informatics Indonesian Journal of Electrical Engineering and Computer Science

Mardeni Roslee

Multimedia University

Author-ID : 2384025

Computer Science & IT Electrical & Electronics Engineering

Published : 6 Documents Claim Missing Document

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A high-efficiency continuous class-F power amplifier design using simplified real frequency technique Md. Golam Sadeque; Zubaida Yusoff; Mardeni Roslee
Bulletin of Electrical Engineering and Informatics Vol 9, No 5: October 2020
Publisher : Institute of Advanced Engineering and Science

The fourth-generation (4G) wireless communication has been deployed in many countries. However, there are still some problems such as spectrum crisis due to the increase of wireless mobile devices and servicing. Therefore, the fifth-generation (5G) communication system will be employed at some different spectrum other than 4G frequency band. The radio frequency power amplifier (RFPA) is the key component of the 5G system. In this paper, a broadband continuous class-F (CCF) RFPA is designed for the 5G frequency band from 3.3-4.3 GHz. The input and output matching network are designed using the simplified real frequency technique (SRFT). Using a 10W GaN CGH40010F Cree device, the efficiency of the RFPA achieved greater than 70.7% for the whole frequency band with a maximum of 81.5%. The output power and the gain are more than 40 dBm and 10 dB respectively

Enhanced fractional frequency reuse approach for interference mitigation in femtocell networks Abdullah H. Alquhali; Mardeni Roslee; Mohamed Babikir Abdelgadir; Khaldon Kordi; Khalid S. Mohamed
Bulletin of Electrical Engineering and Informatics Vol 9, No 4: August 2020
Publisher : Institute of Advanced Engineering and Science

Small cell networks are expected to heavily be deployed in wireless communication networks due to it ability to enhance signals quality and spectrum utilisation. However, interference is posing a major threat to wireless communication especially cellular femtocell networks whereby its performance is degraded in dense deployment areas. For this reason, an enhanced fractional frequency reuse approach is proposed in this paper to mitigate the interference in femtocell networks. This is achieved by dividing the service area and frequency into three regions and three sets whereby each set is allocated different frequency set. The femtocell location is later obtained and assigned frequency in accordance to the region. The proposed approach helps in reducing the interference, boost the signal to interference plus noise (SINR), and enhance the throughput.

D2D communication for spectral efficiency improvement and interference reduction: A survey Abdullah H. Alquhali; Mardeni Roslee; Mohamad Y. Alias; Khalid S. Mohamed
Bulletin of Electrical Engineering and Informatics Vol 9, No 3: June 2020
Publisher : Institute of Advanced Engineering and Science

Device-to-device (D2D) communication system plays an extremely important role in fulfilling the demands of fourth generation (4G) and fifth generation (5G) technologies. 4G technology cannot meet high data demands. The D2D communication system is believed to provide major improvements in resource usage, energy efficiency, and overall throughput, which are the main demands for the 5G network. Some of the main issues in the D2D communication system involve spectrum efficiency and interference. Although many studies have been conducted on spectrum efficiency improvement and interference reduction, the issues still remain. A study should be conducted to obtain a better understanding of the D2D communication system and to develop a D2D scheme with efficient spectrum utilization and interference reduction. Many survey papers have been published on these issues, but the fundamental concepts behind the D2D communication system require investigation. In this study, we investigated and analyzed the fundamental concepts behind the D2D communication system to develop an efficient D2D resource allocation scheme with reduced interference.

Co-Authors Abdullah H. Alquhali Abdulraqeb Alhammadi Anas Bin Abas Anwar Faizd Bin Osman Azah Syafiah Mohd Marzuki Fareha Nizam Hafizal Mohamad Ibraheem Abdullah Mohammed Shayea Kesh. S. Randhava Keshvinder Singh Khaldon Kordi Khalid S. Mohamed Khalid Sheikhidris Md. Golam Sadeque Mohamad Y. Alias Mohamad Yusoff Alias Mohamed Babikir Abdelgadir Prince Ugochukwu Nmenme Shaiful Jahari Hashim Yong Jun Jack Zubaida Yusoff

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Journal : Bulletin of Electrical Engineering and Informatics