| 摘要 |
The invention concerns a transmission method for transmitting a plurality of symbols from a base station of a MC-CDMA telecommunication system to a plurality (K) of users, each symbol (d<SUB>k</SUB>) to be transmitted to a user being spread with a coding sequence (c<SUB>k</SUB>(l), c<SUB>k</SUB><SUP>ext</SUP>(l) over a plurality (L) of carriers (l) to produce a plurality of corresponding frequency component, said base station being provided with a plurality (M) of antenna elements. According to the invention, each frequency component produced by a symbol of a user (k) is weighted by a plurality (M) of weighting complex coefficients (w<SUB>k</SUB>*(l,m),m=1, . . . ,M) to obtain a plurality (LM) of weighted frequency components (z<SUB>k</SUB><SUP>m</SUP>(l)), each weighting coefficient being relative to a user (k), a carrier (l) and an antenna element (m) and said plurality of weighting coefficients being determined from estimates of the channel coefficients (h<SUB>k</SUB>(l,m)) of the downlink transmission channels between each antenna element and each user for each carrier frequency.
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