Novel Results on SNR Estimation for Bandlimited Optical Intensity Channels

. 2023 Dec 19;24(1):23. doi: 10.3390/s24010023

Algorithm 2: MB estimator.

Initialization
Collection of L filter outputs:

z_{k}, {\dot{z}}_{k}

Computation
Modified first-order moment:

{\hat{M}}_{a} \leftarrow \sum_{k = 0}^{L - 1} z_{k}

Modified second-order moment:

{\hat{M}}_{b} \leftarrow \sum_{k = 0}^{L - 1} {\dot{z}}_{k}^{2}

Output
SNR estimate:

{\hat{ρ}}_{s} \leftarrow \frac{8 π^{2} {(1 + α)}^{3}}{3 μ_{a}^{2}} \frac{{\hat{M}}_{a}^{2}}{{\hat{M}}_{b}}