状态积累递归软序列估计  

State Accumulating Recursive Soft Sequential Estimation

作　　者：赵建勋[1] 吴博[1] 黄继海[1] 吉江[2] 

机构地区：[1]中州大学,河南郑州450044 [2]解放军信息工程大学,河南郑州450002

出　　处：《电视技术》2012年第9期1-3,共3页Video Engineering

基　　金：国家自然科学基金项目(61171108)

摘　　要：目前对于数字电视应用的长周期伪随机序列,捕获性能有限。提出状态积累递归软序列估计算法,在递归软信息积累过程前端建立状态积累移位寄存器,通过积累多个周期的信息来提供较为可靠的初始积累值,最终加速后续软信息积累,从而取得较好的捕获性能。To improve the capture capability of long period pseudo-random sequence used in digital television system, a state accumulating recursive soft sequential estimation algorithm is presented. This algorithm sets a state accumulating register in front of reeursive soft sequential process. By accumulating soft information in many periods, it provides more stable initial state and accelerates the following soft information accumulating process. Finally, the capture capability is improved.

关 键 词：伪随机序列 捕获 状态积累 递归软序列估计 

分 类 号：TN949.197[电子电信—信号与信息处理]