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In this paper, the BER performance of OFDM-BPSK 16 - QAM and 64 - QAM system over AWGN fading channel has been reported. Orthogonal Frequency Division Multiplexing (OFDM) is a key technique for achieving high data rates and spectral efficiency requirements for wireless communication systems. However in fading environments the Bit Error Rate (BER) increases. The performance can be improved by using some kind of channel coding. This form of OFDM is called COded-OFDM (COFDM). This paper presents a modeling and simulation of OFDM based on IEEE 802.11a standard.
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