Patent ID: 7079607

Claim:
A multi-user detection method that eliminates interference between users, each user transmitting a signal of modulated data in a form of symbols on a transmission channel, each transmission channel including at least one propagation path and each propagation path arriving at an array of reception antennas in a direction of arrival, the method comprising: executing at least one sequence for each user, each sequence comprising: (a) estimating the signal transmitted by the user from signals received at antennas, the estimating (a) effecting an estimation of a direction of arrival and characteristics of propagation of each path of the transmission channel from the signals; (b) estimating the data transmitted by the user from the estimation of the signal transmitted; (c) estimating a contribution of the user to the signals received by the different antennas from the data estimated at the estimating (b) and the direction of arrival and the propagation characteristics estimated at the estimating (a); and (d) subtracting from the signals the contribution estimated at the estimating (c) to obtain cleaned antenna signals, the cleaned antenna signals supplied by at least a first sequence being used as antenna signals by at least a second sequence.