Abstract: This work is concerned with how well OFDM performs in digital broadcasting when transmitted over an Additive White Gaussian Noise (AWGN) channel only. The main objective of this work is to design an OFDM system for digital broadcasting standard. In this, it uses 2k mode and 8k mode system. The main problem in OFDM is PAPR value. So, in this work, it also improves the value of PAPR under different modulation formats. The DVB-T system for terrestrial broadcasting is probably the most complex DVB delivery system. It is proven a worldwide success. It has become the de facto world standard for transmitting digital terrestrial television. Originally, the DVB-T standard was created for fixed and portable reception as the main application areas. OFDM can provide large data rates with sufficient robustness to radio channel impairments. In this, different modulation formats are used like QAM, QPSK etc. and their performance with these formats are evaluated.
Keywords: OFDM System, Digital Broadcasting, QAM modulation, DVB etc.