Abstract
The existence of an orthogonal labelling of a graph G with respect to a certain group implies the existence of the cyclic orthogonal double cover of the Circulant graphs on that group. In this article, a technique for orthogonal labelling is produced for the corona product of two finite or infinite graph classes such as path, cycle and star graphs. In addition, the nonexistence of the orthogonal L-labelling is proved for the corona product of K-2 and an infinite cycle.