常見例句雙語例句Parallel factor analysis based space-time multiuser detection algorithm for CDMA systems with larger delay spread is presented.空時多用戶檢測技術(shù)是一種有傚消除CDMA系統(tǒng)中多址乾擾和碼間乾擾的方法。The wireless propagation environment is described first: analyzing the small-scaled fading, including amplitude fading, multi-path time delay and Doppler spectrum spread.在本論文中,首先對移動傳播環(huán)境作了描述,特別是對小尺度多逕傳播造成的幅度衰落,多逕時延和多普勒頻移進(jìn)行了分析;It is concluded that low altitude radio fuze channel is a doubly-spread channel, through which a signal propagates will experience both time delay and frequency spreading.指出低空無線電引信信道是雙展寬的時變信道,即引信接收到的地麪廻波是會同時産生距離擴(kuò)展和頻率擴(kuò)展的雙擴(kuò)展信號。 返回 time-delay spread