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orthogonal Frequency Division Multiplexing) is a basic element in the 4G mobile system. The OFDM performance can be improved using the channel coding. The channel coding is a class of signal transformations designed to improve communication system performance. The work presented in this paper discusses the performance improvement of OFDM communication system using different channel coding techniques through AWGN channel model. These coding techniques include Reed Solomon coding, Convolutional coding, Concatenated coding (by combining Reed Solomon with Convolutional), and Interleaved concatenated coding techniques. Besides, a new algorithm produced to choose a good convolutional encoder design for a certain rate and memory registers.

Performance Improvement of Coded OFDM Communication System in AWGN Channel