Bit Error Rate Analysis of Digital Modulation Techniques in Wireless Communication System

• Author(s): C.I. Ofoegbu ; D.O. Njoku ; S.A. Okolie ; O.C. Nwokonkwo ; J.E. Jibiri; C.G. Onukwugha
• Paper ID: 1703100
• Page: 118-124
• Published Date: 13-01-2022
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 5 Issue 7 January-2022

Abstract

The main basic components for selecting modulation technique are Bit Error Rate (BER) and Signal to Noise Ratio (SNR). This paper examined the performance of different modulation techniques including 8-QAM, 16-QAM, 32-QAM, 64-QAM and QPSK in Additive White Gaussian Noise (AGWN) and Rayleigh fading channels for wireless communication system using computer simulation bertool of MATLAB software. Simulation and performance evaluation, results indicated that lower order modulation techniques outperform the higher order schemes for transmission of data in both AGWN and Rayleigh fading channels such that for QAM modulation, 8-QAM provided the finest BER with value of (0.000652 and 0.0231), while 16-QAM, 32-QAM, and 64-QAM yielded BER performance of (0.017 and 0.0301), (0.0161 and 0.0665), (0.0265 and 0.0792) with respect to increasing SNR at 10 dB. However, this comes at the cost of the data rate since lower order techniques have lower data rates than their higher order counterpart. Furthermore, it was found that the performance in AGWN channel was better than the performance in Rayleigh fading channel for all considered modulation schemes. On which modulation technique provided the best BER performance, it was observed that QPSK modulation technique outperformed other modulation schemes with BER of 3.8 ×10-6 in AGWN channel and 0.0010 in Rayleigh fading channel at SNR of 10 dB. Generally, the simulation results showed that the BER performance improves as the SNR increases.

Keywords

Bit error rate, Channel, Digital modulation, Wireless Communication.

Citations

IRE Journals:
C.I. Ofoegbu , D.O. Njoku , S.A. Okolie , O.C. Nwokonkwo , J.E. Jibiri; C.G. Onukwugha "Bit Error Rate Analysis of Digital Modulation Techniques in Wireless Communication System" Iconic Research And Engineering Journals Volume 5 Issue 7 2022 Page 118-124

IEEE:
C.I. Ofoegbu , D.O. Njoku , S.A. Okolie , O.C. Nwokonkwo , J.E. Jibiri; C.G. Onukwugha "Bit Error Rate Analysis of Digital Modulation Techniques in Wireless Communication System" Iconic Research And Engineering Journals, 5(7)