期刊名称：International Journal of Software Engineering and Its Applications
印刷版ISSN：1738-9984
出版年度：2014
卷号：8
期号：3
页码：269-278
DOI：10.14257/ijseia.2014.8.3.25
出版社：SERSC
摘要：In this paper, we introduce the partial channel state information based on sub-carrier allocation (PCSI-SA) scheme in order to improve the performance in multi-carrier transmission techniques such as Orthogonal Frequency Division Multiplexing Access (OFDMA). To obtain an optimum resource allocation, we require accurate channel state information (CSI). However, in practical resource allocation systems, it is hard to estimate the accurate channel state information because the environment of a wireless communication channel is always changing. To solve this problem, we proposed the resource allocation scheme using partial channel state information (PCSI) feedback data from the receiver. Moreover, the proposed sys- tem improves the fairness among the users, as well as the BER performance. We evaluate the performance of the proposed scheme using computer simulations. The results show that the proposed system provides superior performance compared to that of conventional systems in term of BER performance and fairness.
关键词：Partial Channel State Information (PCSI); Dynamic Sub-carrier assignment ; (DSA); Multi-Carrier Modulation (MCM)
