LTE上行接收分集中一种新的判决反馈检测算法  

Algorithm of Decision Feedback Detection for LTE Uplink Reception Diversity

作　　者：管鲍[1] 王晓军[2] 张晓文[1] 李亚麟[1] 

机构地区：[1]上海贝尔股份有限公司,上海201206 [2]空军雷达学院二系,武汉430019

出　　处：《空军雷达学院学报》2010年第4期254-257,261,共5页Journal of Air Force Radar Academy

摘　　要：针对快速时变信道,提出了一种新的联合信道估计和符号判决反馈检测算法应用于LTE上行接收分集.新算法对OFDM数据符号进行硬判决,并利用硬判决结果对该符号上的信道进行估计,估计结果用于相邻数据符号的均衡和解调.分析和仿真结果表明:在高信噪比、快速移动环境下,新算法相对线性插值算法具有较好的性能,而且具有较高的实用性.Aimed at the fast time-variant channel,a new joint channel estimation and symbol decision feedback algorithm applied to LTE Uplink reception diversity was proposed.The algorithm makes hard decision on the OFDM datum symbols over the channel and estimate the channel by using the hard decision results,and the estimation results can be used for balancing and demodulating the adjacent datum symbols.Analysis and its simulation show that the new algorithm is of better performance and higher availability with respect to the linear-interpolation algorithm,under the high signal-to-noise ratio and fast moving environment.

关 键 词：正交频分复用 长期演进 信道估计 符号检测 时变信道 

分 类 号：TN914[电子电信—通信与信息系统] TN911.23[电子电信—信息与通信工程]