| 摘要 |
A method of detecting a plurality of symbols (d<SUB>k</SUB>(i)) transmitted by or for a plurality K of users, each symbol belonging to a modulation constellation and being the subject of a spectral spreading by means of a spreading sequence, the method including a filtering step adapted for supplying a real vector (z) characteristic of the received signal, at least the closest neighbor of the vector being sought within a lattice of points (Xi) generated by the modulation constellations, the search being limited to candidate vectors (x), each of whose components (b<SUB>i</SUB>) has a value lying within a search interval defined by a lower bound (B<SUB>i</SUB><SUP>-</SUP>)and an upper bound (B<SUB>i</SUB><SUP>+</SUP>), the bounds being chosen so that each of the intervals comprises only component values of points situated within a sphere with a predetermined radius (√{square root over (C) and belonging to a modulation constellation.
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