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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Rekayasa elektrika
Anita Fauziah
Politeknik Negeri Lhokseumawe
Computer Science & IT

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Wireless Data Communication Techniques to Coordinate Distributed Rooftop PVs in Unbalanced Three-phase Feeder Rachmawati Rachmawati; Anita Fauziah; Nelly Safitri
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 16, No 3: June 2018
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v16i3.7780

Abstract

A necessity of the availability of communication network to provide data transfer amongst the coordinated single-phase rooftop photovoltaic (PV) in unbalanced three-phase low voltage (LV) feeder is essential since fetching data within the sensor of each PV unit requires real-time measurement and reliable data exchange within smart grid (SG), loads and other PV units. The main objective of this paper is to model the popular Wi-Fi, WiMax and ZigBee wireless data communication techniques into algorithms using numerical analysis. Those communication technologies have low cost and low power consumption. The benefits and drawbacks of those considered wireless data communications are shown as the required data that transferred and appropriate coding is also proposed. The number of transmitted symbols and the processing time delay of the proposed data coding are numerically analyzed, the results indicated that the 100% penetration level of PV that resulted higher injected reactive power back into the networks is able to be overcome since the coordinated PVs along the feeder is communicating to lower the unbalanced voltage profile.
Analysis of FIR Digital Filter with Optimal Equiripple Design Techniques to Eliminate Jamming in Radar Signal Processing Raisah Hayati Muhammad; Yassir; Anita Fauziah
Jurnal Rekayasa Elektrika Vol. 22 No. 2 (2026): Vol. 22, No. 2, June 2026
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Radar (RAdio Detection and Ranging) is a system for detecting and tracking a moving or stationary target using electromagnetic waves. The reflected signal received back by the radar consists of the echo from the desired target and the interference. One form of interference signal that is received back by the radar is jamming. If the interference signal is large enough, it can complicate the process of detecting the desired target. The interference signal can be removed by using a digital filter. This study aims to analyze the effectiveness of a Finite Impulse Response (FIR) digital filter designed using the Optimal Equiripple technique and the Parks–McClellan algorithm for suppressing jamming signals in radar signal processing. The proposed approach was evaluated under different passband frequencies, stopband frequencies, transition bandwidths, filter orders, and signal-to-interference (S/I) ratios to investigate their effects on filtering performance. From the results of the FIR digital filter test using the Equiripple Optimal design technique and the Parks-McClellan Algorithm to eliminate jamming, it was found that the smaller the transition band, the higher the filter order (N),  and the maximum S/I value is obtained when the target signal is also lost due to the filter, while the interference signal (jamming) after filtering remains minimal.
Co-Authors Nelly Safitri Rachmawati Rachmawati Raisah Hayati Muhammad Yassir