Patent ID: 7333538

Claim:
An equalisation method for a downlink channel in an MC-CDMA telecommunication system, comprising steps of: establishing a plurality of links between a transmitter and a plurality of receivers, each link using a signal having a distinct access code amongst N codes transmitted by the transmitter and including MC-CDMA symbols; estimating relative power levels of the signals transmitted by the transmitter; selecting from the N codes, for a receiver, a subset of P codes that most interfere with a distinct access code of the receiver; equalizing the MC-CDMA symbols carrier by carrier; and estimating the equalized MC-CDMA symbols transmitted over at least one link based on the estimated relative power levels and the selected subset of P codes, the estimating the equalized MC-CDMA symbols further comprising minimizing a mean square error between the transmitted MC-CDMA symbols and the estimated symbols.