BER Analysis of Modulation Techniques Based OFDM System

Efficient utilization of the spectrum is the key challenges is multiplexing technology, and have OFDM is a transmission technique which ensures efficient utilization of the spectrum by allowing overlap of the spectrum by allowing overlap of carriers. It has various advantages like high spectral density, its robustness to channel fading, its ability to overcome several radio impairment factor such as the effect of AWGN impulse noise, multi-path fading etc. Most of the wireless LAN standards like IEEE 802.11a or IEEE 802.11 use OFDM as the main multiplexing scheme for better use of spectrum. KeywordsDigital multi-carrier modulation, OFDM (Orthogonal frequency division multiplexing), Bit Error Rate (BER), AWGN, Simulation.