文章基本信息

标题：PERFORMANCE ANALYSIS OF ADAPTIVE MODULATION FOR HIGH MOBILITY FOR LTE
本地全文：下载
作者：LENIN ; Dr. S. MALARKKAN
期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：67
期号：2
出版社：Journal of Theoretical and Applied
摘要：The demand of high data rate and affirmation to the real-time communications (network). LTE is well placed to fulfill the demands of next generation mobile networks. It delivers beneficial features such as high mobility transmission and scalability of bandwidth using both TDD and FDD duplexing methods, for the time varying and frequency selective wireless channel within one OFDM sub-carrier. For the exact estimation of wireless channel, some of OFDM subcarrier used as a reference signal while other subcarrier are either used to transmit data symbols are set as unused. The weighted time-domain interpolation computed from the channel based on the Doppler spread information and Parallel Interference Cancellation scheme jointly with Decision Statistical Combining (PIC-DSC) technique is used to reduce the ICI and to improve the data symbol detection. Here the adaptive modulation technique is used additionally to adopt the channel condition that maximizes the spectral efficiency and to meet higher throughput instead of retransmission, the transition rate can be cut down, when the channel condition is miserable. So the Quality of Service (QOS) in the time varying wireless channel is maintained.
关键词：Adaptive Modulation; ICI; MIMO-OFDM; PIC; DSC