© 2019 IEEE. Doppler assisted wireless communication (DAWC) is a narrow band communication technique that leverages a rotating drum conformal antenna for interference mitigation. The different multi-path components that impinge on this rotating drum antenna undergo different Doppler shifts giving rise to different spectral characteristics for different multi-path components. The rotation speed of the antenna could be adjusted such that the interfering multi-path components, that has reasonable azimuthal separation to the desired multi-path components, are filtered out by the receiver pulse shaping filter with no extra effort. In this paper, we study the effectiveness of DAWC to suppress co-channel interference (CCI) from a large number of co-channel users, which is a prevailing condition in highly dense cellular communication systems like 5G. We further discuss several key challenges associated with DAWC, including the inter-symbol interference (ISI) induced by Doppler effect.