| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of equalization for a down link channel, which can estimate various transmission levels and reduces the complicatedness, in an MC-CDMA electric communication system where a plurality of links are established between a transmitter and a plurality of receivers. SOLUTION: This method includes the first step of estimating the relative level of a signal transmitted by the transmitter, using n pieces of each signal, and the first step includes equalizing MC-CDMA symbols separately for each carrier, and the method includes the second step for estimating the symbols to be transmitted by the user on at least one link, using the level, and the second step is so performed as to minimize the least mean square error between the transmitted symbol and the estimated symbol. |
