基于LTE-Advanced上行链路的多级迭代干扰消除检测算法  

Multi-stage iteration interference cancellation algorithm based on LTE-Advanced uplink

作　　者：王玄[1] 彭端[2] 张雅媛[1] 

机构地区：[1]广东工业大学信息工程学院,广州510006 [2]广东工业大学实验教学部,广州510006

出　　处：《重庆邮电大学学报（自然科学版）》2015年第6期758-761,808,共5页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：广州市应用基础研究重点项目(2012J4100071);广州市应用基础研究项目(2013J4100111)~~

摘　　要：针对先进的长期演进(long term evolution advanced,LTE-Advanced)上行链路多输入多输出(multiple-input multiple-output,MIMO)单载波频分多址(single carrier frequency division multiple access,SC-FDMA)系统载波频率偏移(carrier frequency offset,CFO)的影响,提出了基于多级迭代干扰消除检测算法。将传统的单级串行干扰消除(successive interference cancellation,SIC)和并行干扰消除(parallel interference cancellation,PIC)进行混合迭代形成多级的迭代干扰消除检测算法以降低MIMO SC-FDMA系统的误比特率。理论分析和仿真结果表明两级PIC迭代检测算法和SIC+PIC混合迭代检测算法都能实现MIMO SC-FDMA系统CFO干扰消除的目的,降低了MIMO SCFDMA系统的误比特率,提高了系统的性能。Aiming at the carrier frequency offset＇s（ CFO） influence upon LTE-Advanced multiple-input multiple-output single carrier frequency division multiple access（ MIMO SC-FDMA） uplink system,the detection algorithm based on multistage interference cancellation is proposed. It mixed the traditional single-stage successive interference cancellation（ SIC）and parallel interference cancellation（ PIC） to form multi-stage iteration interference cancellation algorithm,in order to decrease the bit error rate of multiple-input multiple-output single carrier frequency division multiple access（ MIMO SC-FDMA） system. Theoretical analysis and simulation results show that the algorithm both two-stage-PIC and SIC ＋ PIC has achieved the goal of CFO interference cancellation in the MIMO SC-FDMA system.

关 键 词：多输入多输出 单载波频分多址 载波频率偏移 

分 类 号：TN929.5[电子电信—通信与信息系统]