基于块衰落信道的turbo码一致界  

Union Bound of Turbo Codes on Block-Fading Channels

作　　者：张卫党[1] 王姣姣[1] 陈泽先[1] 

机构地区：[1]郑州大学信息工程学院,河南郑州450000

出　　处：《郑州大学学报（工学版）》2014年第1期108-111,共4页Journal of Zhengzhou University（Engineering Science）

基　　金：河南省教育厅自然科学研究项目(2010B510020)

摘　　要：块衰落信道是应用广泛的一种信道模型,它接近无线通信系统特性.利用一致界技术推导出turbo码在块衰落信道中的误比特率上界,针对不同的分组长度和信噪比进行了仿真,结果表明,在分组长度小、高信噪比条件下具有优良的性能,并与M&L界、DS2界进行比较.A kind of shaped magnetic sludge activated carbon was prepared via ZnC12 activationtubular fur nace pyrolysis, activated carbon/iron oxide coprecipitation and moduleshaped technics. The optimization of preparation process, as well as the micromorphology and properities of the activated carbon materials, was in vestigated by orthogonal experiments,BET, SEM, IR and magnetization measurements. The experimental re sults showed that the iodine number and specific surface area of sludge activated carbon were over 330 mg/g and 300 m2/g at ZnCI2 concentration 3 mol/L, reaction time 2 h, temp. 650 ℃ ,and liquidsolid ratio 2： 1. Because the magnetic sludge activated carbon could be easily removed from the medium by a simple magnetic procedure, it was expected to have a fine application prospect.

关 键 词：TURBO码 块衰落信道 一致界 

分 类 号：TN918.1[电子电信—通信与信息系统]