A.信令跟蹤 B.監(jiān)控 C.修改參數(shù) D.搜集數(shù)據(jù)
A.瑞利衰落(Rayleighfading) B.路徑衰耗(Pathloss) C.陰影效應(yīng)(Shadowing)
A.四分集接收 B.PBT C.發(fā)分集 D.塔放