In　this　paper,　we　apply　angle-domain　Doppler　compensation　for　high-mobility　wideband　massive　multi-input　multi-output　(MIMO)　uplink　communications.　The　time-varying　multipath　channel　is　considered　between　high-speed　terminal　and　static　base　station　(BS),　where　multiple　Doppler　frequency　offsets　(DFOs)　are　associated　with　distinct　angle　of　departures　(AoDs).　With　the　aid　of　large-scale　uniform　linear　array　(ULA)　at　the　transmitter,　we　design　a　beamforming　network　to　generate　multiple　parallel　beamforming　branches,　each　transmitting　signal　pointing　to　one　particular　angle.　Then,　the　transmitted　signal　in　each　branch　will　experience　only　one　dominant　DFO　when　passing　over　the　time-varying　channel,　which　can　be　easily　compensated　before　transmission　starts.　We　theoretically　analyze　the　Doppler　spread　of　the　equivalent　uplink　channel　after　angle-domain　Doppler　compensation,　which　takes　into　account　both　the　mainlobe　and　sidelobes　of　the　transmit　beam　in　each　branch.　It　is　seen　that　the　channel　time-variation　can　be　effectively　suppressed　if　the　number　of　transmit　antennas　is　sufficiently　large.　Interestingly,　the　asymptotic　scaling　law　of　channel　variation　is　obtained,　which　shows　that　the　Doppler　spread　is　proportional　to　the　maximum　DFO　and　decreases　approximately　as　1/root　M　(M　is　the　number　of　transmit　antennas)　when　M　is　sufficiently　large.　The　numerical　results　are　provided　to　corroborate　the　proposed　scheme.