Time domain window adaptation for joint channel estimation and DMRS bundling

In accordance with example embodiments of the invention there is at least a method and apparatus to perform determining one duration of scheduled transmissions for at least one of physical uplink control channels or physical uplink shared channels; determining at least one actual duration over which power consistency and phase continuity can be maintained; applying one or more time-domain window duration based at least in part on the determined at least one actual duration to make the one or more time-domain window duration cover the one duration of the scheduled transmissions; and based on the determined more than one time-domain window duration, performing at least one of modulation or demodulation of the scheduled transmissions.