Performance Analysis of Coded MC-CDMA in Powerline Communication Channel with Implusive Noise

Broadband communications for indoor power-line networks with impulsive noise using multicarrier CDMA (MC-CDMA) is considered. From earlier investigations, it is known that this channel suffers from multipath fading and frequency selectivity along with man-made impulsive bursty noise. Nevertheless, the calculated channel capacity limit promises very high data rates over this channel. Enhancement techniques, such as coding can help a multicarrier system to tackle impulsive noise burst. In this paper the bit error rate (BER) performance of the MC-CDMA system under impulsive noise and frequency fading is theoretically analyzed and closed form expression for this performance is derived. Furthermore, a theoretical upper bound for performance of coded MC-CDMA system is derived, given perfect interleaving and effect of interleaver length on coding performance is also studied. Simulations show that the upper bound is quite tight for the case of employing a longer interleaver