基于VCC-DDEA算法的短波信道均衡  

HF Channel Equalization Based on VCC-DDEA

作　　者：田伟[1] 周新力[2] 吴建刚 孟庆萍[2] 

机构地区：[1]海军航空工程学院训练部,山东烟台264001 [2]海军航空工程学院电子信息工程系,山东烟台264001 [3]海军驻三江航天集团军事代表室,湖北孝感432000

出　　处：《北京邮电大学学报》2012年第2期104-107,共4页Journal of Beijing University of Posts and Telecommunications

摘　　要：为了改善窄带短波单音串行数据通信的误码率性能,提出了时变信道系数数据引导均衡算法(VCC-DDEA).采用自适应跟踪算法估计每个码符号采样时刻的信道系数,消除由训练序列在相应时刻引入的码间干扰,并基于误差平方和最小(LSSE)准则估计用户数据.仿真结果表明,相对于DDEA,VCC-DDEA突破了1帧数据范围内信道系数恒定的要求,性能显著提高.A time-varying channel coefficients of data-directed equalization algorithm（VCC-DDEA） is proposed for single tone narrow-band high frequency communication.The channel coefficient is estimated at each symbol sampling time based on adaptive tracking algorithm.The inter-symbol interface caused by training sequences is eliminated,then the user data is estimated as well based on least sum square error（LSSE） criterion.The demand that the channel coefficients being constant for DDEA in the frame is broken through VCC-DDEA and a conspicuous performance improvement is obtained.

关 键 词：窄带短波信道 数据引导均衡算法 矩阵LU分解 

分 类 号：TN911.5[电子电信—通信与信息系统]