NMR signal enhancement via a new time-frequency transform

In this paper, a reliable method to reduce the noise from nuclear magnetic resonance (NMR) signals using a recently developed linear critically sample d time-frequency transform is proposed. In addition to its low computationa l requirements, this transform has many theoretical advantages that make it a good candidate for NMR signal enhancement. NMR signals in the transform domain are concentrated in a few coefficients while the noise is well distr ibuted. Performing a thresholding technique in the transform domain, theref ore, significantly enhances the signal. A comparison with other signal enha ncement techniques shows that this technique has a superior performance, th us confirming the theoretical expectations.