常見例句雙語例句The existing point to point communication methods limited by the spectrum of resources and fading channel has been unable to meet demand.現(xiàn)有的點對點通信方式受頻譜資源和信道衰落等的限制已經(jīng)無法滿足需求。The statistic model of air-ground radio communication channel is characterized by the multipath fading, Doppler power spectrum and delay power spectrum.空地通信信道的主要統(tǒng)計特性包括多徑衰落特性、多普勒功率譜和時延功率譜。Orthogonal Frequency Division Multiplexing(OFDM) can efficiently use of radio spectrum and withstand multipath fading, but the high level of Peak Average Power Ratio(PAPR) is a major drawback.正交頻分復(fù)用(OFDM)具有高頻譜利用率及抗多徑衰落的特性,但其存在峰均功率比(PAPR)較高的問題。 返回 fading spectrum