Blind adaptive signal reception for MC-CDMA systems with interference suppression

In this paper we consider signal reception in multicarrier code-division multiple-access (MC-CDMA) systems. A blind adaptive algorithm is proposed to determine a weight vector which optimally combines the desired signal contributions from different carriers as well as suppresses noises and interference. No knowledge of the channel conditions (fading coefficients, signature sequences and timing of interferers, statistics of other noises, etc.), nor any training sequence is required. The performance is examined under Rayleigh fading channels. Results show that the proposed algorithm performs well and is robust to the near-far problem.