Multiuser detection method and device
First Claim
1. Method of detecting a plurality of symbols (dk(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 before being modulated on a plurality L of carriers, the said method comprising a step of demodulation (420) and a step of spectral despreading (430) of the received signal (r(i)) in order to supply a vector (y2(i), {tilde over (y)}2(i)) characteristic of the said signal, characterised in that it comprises a step (450) of searching, within an array of points (Λ
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2,Ω
2) generated by the symbols of the said modulation constellations, for at least the closest neighbour of the said vector.
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Accused Products
Abstract
Method of detecting a plurality of symbols (dk(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 before being modulated on a plurality L of carriers, the said method comprising a step of demodulation (420) and a step of spectral despreading (430) of the received signal (r(i)) in order to supply a vector (y2(i), {tilde over (y)}2(i)) characteristic of the said signal, and a step (450) of searching, within an array of points (Λ2,Ω2) generated by the symbols of the said modulation constellations, for at least the closest neighbor of the said vector.
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Citations
12 Claims
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1. Method of detecting a plurality of symbols (dk(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 before being modulated on a plurality L of carriers, the said method comprising a step of demodulation (420) and a step of spectral despreading (430) of the received signal (r(i)) in order to supply a vector (y2(i), {tilde over (y)}2(i)) characteristic of the said signal, characterised in that it comprises a step (450) of searching, within an array of points (Λ
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2,Ω
2) generated by the symbols of the said modulation constellations, for at least the closest neighbour of the said vector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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2,Ω
Specification