  The aim of this paper is to explore warm inflation in the background of
$f(\mathcal{G})$ theory of gravity using scalar fields for the FRW universe
model. We construct the field equations under slow-roll approximations and
evaluate the slow-roll parameters, scalar and tensor power spectra and their
corresponding spectral indices using viable power-law model. These parameters
are evaluated for a constant as well as variable dissipation factor during
intermediate and logamediate inflationary epochs. We also find the number of
e-folds and tensor-scalar ratio for each case. The graphical behavior of these
parameters proves that the isotropic model in $f(\mathcal{G})$ gravity is
compatible with observational Planck data.
