Using Least Mean p-Power Algorithm to Correct Channel Distortion in MC-CDMA Systems

International audienceThis work focuses on adaptive Broadband Radio Access Network (BRAN) channel identification and ondownlink Multi-Carrier Code Division Multiple Access (MCCDMA) equalization. We use the normalized BRAN C channel model for 4G mobile communications, distinguishing between indoor and outdoor scenarios. On the one hand, BRANC channel parameters are identified using the Least Meanp-Power (LMP) algorithm. On the other, we consider thesecoefficients in the context of adaptive equalization. We provide an overview and a mathematic formulation of MC-CDMAsystems. According to these fundamental concepts, the equalizer technique is investigated analytically to compensate forchannel distortion in terms of the bit error rate (BER). Thenumerical simulation results, for various signal-to-noise ratiosand different p threshold, show that the presented algorithmis able to simulate the BRAN C channel measured with different accuracy levels. Furthermore, as far as the adaptiveequalization problem is concerned, the results obtained usingthe zero-forcing equalizer demonstrate that the algorithm isadequate for some particular cases of threshold p