| FMT系统中的子信道Turbo迭代均衡 |
| |
| 引用本文： | 钟华,郑林华.FMT系统中的子信道Turbo迭代均衡[J].数据采集与处理,2011,26(1). |
| |
| 作者姓名： | 钟华 郑林华 |
| |
| 作者单位： | 1. 中国人民解放军95746部队,成都,611531;国防科学技术大学电子科学与工程学院,长沙,410073
2. 国防科学技术大学电子科学与工程学院,长沙,410073 |
| |
| 摘 要： | 在滤波多音调制(FMT)系统中,子信道频谱不重叠通过不满足理想重构条件的原型滤波器来实现,这不可避免地引入符号间干扰(ISI),尤其当FMT应用于无线多径环境时,ISI将进一步增大。而Turbo均衡将信道均衡和译码联合处理,能够有效地消除ISI。本文提出了一种FMT系统子信道Turbo迭代均衡算法,信道衰落采用单抽头均衡器来补偿,而FMT系统自身所产生的ISI则通过基于线性滤波器结构的Turbo迭代均衡来消除。仿真结果表明,不论采用QPSK还是16QAM调制方式,经过2次以上的迭代后,新算法的误码率性均优于传统的判决反馈均衡算法。
|
| 关 键 词： | Turbo均衡 滤波多音调制 符号间干扰 最小均方误差 |
Sub-channel Turbo Iterative Equalization in FMT Systems |
| |
| Zhong Hua,Zheng Linhua.Sub-channel Turbo Iterative Equalization in FMT Systems[J].Journal of Data Acquisition & Processing,2011,26(1). |
| |
| Authors: | Zhong Hua Zheng Linhua |
| |
| Affiliation: | Zhong Hua1,2,Zheng Linhua2(1.95746 Unit of PLA,Chengdu,611531,China,2.School of Electronic Science andEngineering,National University of Defense Technology,Changsha,410073,China) |
| |
| Abstract: | The non-overlapping sub-channel characteristics are realized in the FMT systems by the imperfect reconstruction prototype filter.It inevitably introduces ISI(Inter-symbol interference).ISI is increased when FMT is applied in wireless multipath environment.And Turbo equalization can effectively eliminate ISI because it uses the redundant information from channel coding in the iterative process.According to the above-mentioned analyses,this paper proposes a Turbo sub-channel iterative equalization algorithm f... |
| |
| Keywords: | Turbo equalization filtering multitone modulation ISI MMSE |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
