Reduction of Bit Error Rate using Guard Interval Measurements for 5G Network

Hazwani  Mohd Radzi; Noorazlina  Mohamid Salih; Wardiah  Mohd Dahalan; Azlina  Idris; Aidatul Julia  Abd Jabar; Siti Maisurah  Sulong; Mohd Shahrizan  Mohd Said; Yuliana Mike

doi:10.37934/ard.126.1.4252

Authors

Hazwani Mohd Radzi Marine Electrical Engineering Technology Section, Universiti Kuala Lumpur Malaysian Institute of Marine Engineering Technology, 32200 Lumut, Perak, Malaysia
Noorazlina Mohamid Salih Wireless Communication Technology Group (WiCOT), School of Electrical Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
Wardiah Mohd Dahalan Marine Electrical Engineering Technology Section, Universiti Kuala Lumpur Malaysian Institute of Marine Engineering Technology, 32200 Lumut, Perak, Malaysia
Azlina Idris Wireless Communication Technology Group (WiCOT), School of Electrical Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
Aidatul Julia Abd Jabar Wireless Communication Technology Group (WiCOT), School of Electrical Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
Siti Maisurah Sulong Wireless Communication Technology Group (WiCOT), School of Electrical Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
Mohd Shahrizan Mohd Said Department of Built Environment and Technology Studies, College of Built Environment Studies, UiTM Perak Branch, 32610 Seri Iskandar, Perak, Malaysia
Yuliana Mike Department of Electrical Engineering and Informatics & Computer Engineering, Politeknik Elektronika Negeri Surabaya (PENS), Electronics Engineering Polytechnic Institute of Surabaya (EEPIS), Surabaya, East Java 60111, Indonesia

DOI:

https://doi.org/10.37934/ard.126.1.4252

Keywords:

OFDM, 5G, bit error rate, guard interval, spectral efficiency

Abstract

Orthogonal Frequency Division Multiplexing (OFDM) is reliable for improving the wireless performance of the 5G network. This multicarrier modulation is expected to have high speed and efficient signal transmission. However, it still suffers from high error and can cause signal interference, thus affecting the performance of the bit error rate (BER). The error can be minimized by utilizing Guard Interval (GI), which reduces signal interference and increases Spectral Efficiency (SE). Hence, this research focuses on optimizing GI evaluation for BER reduction, which balances multipath mitigation and data rate efficiency in the systems. A simulation was developed in MATLAB software with varying parameter numbers of Fast Fourier Transform (N_FFT). It is observed that, the best GI implementation is based on number of N_FFT, with 512, ¼ is the best for multiuser environment. Fewer error of the system leads to the better signal transmission efficiency in 5G network.