This technique transforms the vector of subcarrier SNRs, which affect the codeword, into a scalar SNR.
Time for processing a given measurement (vector composed of: SNR, λ p and T m ) once the MLP is designed: ≈ 100 μs in average, regardless of the platform.
Defining γ(w) as the SNR vector of K users γ ( w ) ≜ w ∗ H 1 ∗ H 1 w, …, w ∗ H K ∗ H K w T, (6).
The main contributions of this paper are listed below: (1) For the case that the BS has two Tx antennas, we derive that the feasible set of the SNR vector of all users is a two-dimensional ellipsoid in K-dimensional Euclidean space, where K is the number of users.
The MAX-SNR beamforming vector of the k th MS in the i th cell can be expressed as w SNR i ( k ) = arg max w i ( k ) | | H D ( i, k ) w i ( k ) | | 2 s.t. | | w i ( k ) | | 2 = 1.
However, due to the constraint between the weight and the estimate steering vector of the desired signal, their output SNR is smaller than the optimal one and the proposed one.
beamformer, the imprecise estimation of the steering vector of the desired signal makes the output SNR small when the DOA mismatch level is large.
However, due to the inaccurate estimation of the steering vector, the output SNR of the Rec-est.
This function generates a vector of white Gaussian noise of mentioned signal-to-noise ratio (snr) value in decibel scale and adds to the signal vector x.
The Max-SNR Rx beamformer w R is the left singular vector of Z, which is obtained applying again a fixed number of iterations of a power method.
