Method for improving signal to noise ratio in an uplink transmission

A method for accommodating multiple users transmitting on a same sub-carrier to a base station comprising “n” number of antennas, the method comprising:

• enabling one of the multiple users to transmit two data symbols through at least two antennas of a user equipment;
• decomposing a (n×2) channel matrix of the one of the multiple users using Singular Value Decomposition (SVD) into three matrices, wherein the matrices are a (n×n) unitary matrix which is denoted by “U”, a (n×2) partial diagonal matrix which is denoted by “S” and a precoder (2×2) unitary matrix which is denoted by “V”;
• computing precoder determination algorithm (PDA) values corresponding to “X” number of users among the multiple users, wherein for each of the “X” users “n” such PDA values are computed, wherein the PDA values are computed by a relation, [V,Θ]=ψ[U, h, k] where “V” is the precoder matrix used for transmitting data symbols, “Θ” is a scalar value, “U” is the unitary matrix of the one of the multiple users, “h” is a channel matrix of the user for which the PDA value is being computed, and “k” is a value from 1 to “n”, thereby resulting in X*n PDA values;
• identifying a maximum value of “Θ” for each value of “k”, thereby resulting in “n” maximum values of “Θ” from the X*n PDA values;
• and
• selecting the users to which the “n” maximum values of “Θ” correspond, to transmit to a base station through two antennas in a same sub-carrier, wherein each of the selected users is allowed to transmit “m” number of data symbols to the base station, where “m” is the number of maximum values of “Θ” out of “n” maximum values of “Θ”, corresponding to respective selected user.