The Ramanujan Periodicity Project

Nested Periodic Dictionaries

This page contains Matlab implementations of the dictionary based period estimation algorithms proposed in [9]. These algorithms use the Nested Periodic Dictionaries (NPDs). There are three ways in which NPDs can be used to find the period of a signal:

1. l1-l2 norm based block sparsity minimization.
2. l1 norm based sparsity minimization.
3. l2 norm based penalty measure minimization.

Matlab code for the NPDs

Click here to download the Matlab code. Please read the README_NPD.txt file for instructions.

An example illustrating the advantages