数据采集与处理2011，Vol.26Issue(1)：36-40,5.
FMT系统中的子信道Turbo迭代均衡
Sub-channel Turbo Iterative Equalization in FMT Systems
钟华 1郑林华2
作者信息
- 1. 中国人民解放军95746部队,成都,611531
- 2. 国防科学技术大学电子科学与工程学院,长沙,410073
- 折叠
摘要
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 for FMT systems. The wireless channel can be equalized by a one tap sub-channel equalizer, while the imperfect reconstruction prototype filers are equalized by the Turbo sub-channel iterative equalizer adopting linear filers. Simulation results indicate that the bit error ratio(BER) performance for both QPSK and 16QAM modulation of the proposed algorithm is superior to the decision feedback equalization (DFE) algorithm by more than two iterations.关键词
Turbo均衡/滤波多音调制/符号间干扰/最小均方误差分类
信息技术与安全科学引用本文复制引用
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):36-40,5.
