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