Orthogonal signal correction ( osc ) is provided a novel spectral pre - processing method in recent years , which is based on the orthogonal projection 基于正交信號投影分解的正交信號校正( osc )方法,是近年來在化學(xué)計(jì)量學(xué)領(lǐng)域中提出的一種全新數(shù)據(jù)預(yù)處理方法。
In practice , it is difficult to keep orthogonal signal constellation between different users . so there always exists mai in ds / cdma system , which limits system capacity 但實(shí)際中,很難保證到達(dá)接收端的各用戶信號的完全正交性,由此而產(chǎn)生的多址干擾極大的限制了系統(tǒng)容量。