A.頻譜效率高 B.寬帶擴展性強 C.抗多徑衰落 D.頻域調(diào)度及自適應(yīng)
A.QPSK B.16QAM C.64QAM D.128QAM
A.E-NodeB B.MME C.HSS D.S-GW