{HEAD ~ A switching system} of a MIMO mode is provided according to {TAIL ~ another aspect} of the disclosure 
is provided according to
{ HEAD ~ A switching system } of a MIMO mode is provided according to { TAIL ~ another aspect } of the disclosure
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH