Analysis the Performance of OFDM for Different Modulation Techniques with Channels and Image Transmission

G. M Waliullah, Nilufar Yasmin, Mohammad Alamgir, Ibrahim Abdullah, Diponkor Bala


Wireless applications' throughput, reliability, and bandwidth needs have grown in recent years. OFDM improves spectrum efficiency, data capacity, and fading resistance. OFDM is used in 3G GSM, WiMAX, and LTE. The OFDM system divides the input data stream into a number of lower rate streams that are sent over orthogonal subcarriers simultaneously to eliminate Inter Symbol Interference (ISI). The purpose of this paper is to evaluate the performance of the OFDM system utilizing various modulation and channeling techniques. Then, after analyzing the performance, we determined the optimal channel for an OFDM communication system. The final step is to transmit an image through the most optimal channel using various modulation techniques. Multiple channels, including AWGN, Rayleigh, and Rician, were utilized over an OFDM system, and M-PSK and M-QAM modulation techniques are used in both OFDM and image transmission. All simulation results are performed in the MATLAB toolbox 2019a.

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