BER performance analysis of a MC-DS-CDMA wireless communication system with rake receiver employing MRC under Nakagami — m fading

A nobel theoretical analysis is presented for a wireless communication system using MC-DS-CDMA with OFDM subcarriers and Rake receivers under Nakagami-m fading environment considering maximal ratio combining (MRC) for the rake combiner. Here the probability density function (PDF) expression of the signal to noise ratio at the output of rake combiner is developed for individual sub-channels of the OFDM sub carriers. The bit error rate (BER) is then determined for each individual OFDM sub-channels and the average BER is then evaluated numerically. The outcomes show that the performance with respect to BER improves significantly with the increase in the number of rake fingers.