Abstract: Error correcting coding is one of the technique for reducing the signal-to-noise ratio (SNR) required to attain a given bit error-rate. However, this reduction comes at the cost of extra energy consumption required by the baseband processing for encoding and decoding the data. So to study the complete analysis of the trade-off between baseband consumption and coding gain is prime motive of this paper. In this article the energy-consumption of BCH codes with different code rates over AWGN and fading channels is studied. The results show that codes with low code rate are ideal for performing long-range communications, while is better to use less coding redundancy for shorter transmission distance.

Keywords: Baseband processing, coding gain, AWGN, Rayleigh fading channel, BCH.