The average bit BER performance of coded MIMO OFDM with maximum likelihood detection in multipath Nakagami-Rice fading channels is analyzed. The upper bound of the BER probability is derived by means of the union bound of the pairwise error probabilities. Asymptotic results for the high SNR region enable to consider the effect of fading correlations and the diversity advantage. Simulations are performed to verify the correctness of the mathematical analysis, and the analysis is validated to bound the actual BER probability tightly in the high SNR region.