It belongs to multi - carriers modulating technology , and its most remarkable character is the high - speed transmitting ability as well as the excellent resistibility to interface of signal interval and decline of channel selectivity 它屬于多載波調(diào)制技術(shù),其最大的特點是傳輸速率高,對碼間干擾和信道選擇性衰落具有很強的抵抗能力。