A.單載波頻分多址(SC-FDMA., B.OFDMA, C.QAM, D.8PSK.
A.OFDMA, B.SC-FDMA, C.QAM, D.QPSK.
A.頻譜效率, B.符號間干擾, C.子載波間干擾, D.頻譜帶寬.