期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2015
卷号：3
期号：11
DOI：10.15680/IJIRCCE.2015.0311213
出版社：S&S Publications
摘要：Mu lt i-u ser MIMO schedu ling in t he 3 GPP LTE-A dvanced cellular uplink is considered. The uplin k allo ws for preceded mult is tream t ransmission fro m schedu led user and it can be assignin g the same time- frequ ency resou rce. Based on some practical co nstrains exp lo ting thes e features is a ch allen ging to maint ain a lo w sig nallin g o verh ead. The schedulin g pro blem in 3 GPP LT E-A cellular up link is NP-h ard, it can be compose as the maximization o f the sub mod ular set funct ion to matroid an d mu lt iple ru cksack constraints . so then we prop ose Constant factor p olyn omia l-t ime ap pro ximat ion algor ithms and performance are d emo nstrated in s imulat ions .
关键词：Ru cks ack; mu lt iuser scheduling; matro id; NP -hard ; res ource allo cation; s ubmodular maximizat ion
