《计算机应用研究》|Application Research of Computers

FBMC/OQAM系统中基于子空间的信道估计算法

Channel estimation for FBMC/OQAM systems based on subspace method

免费全文下载 (已被下载 次)  
获取PDF全文
作者 王涵,廖建庆,王咸鹏
机构 1.宜春学院 物理科学与工程技术学院,江西 宜春 336000;2.海南大学 南海海洋资源利用国家重点实验室,海口 570228
统计 摘要被查看 次,已被下载
文章编号 1001-3695(2019)05-042-1482-04
DOI 10.19734/j.issn.1001-3695.2017.12.0763
摘要 针对滤波器组多载波偏移幅度调制(FBMC/OQAM)系统中基于传统导频结构的信道估计方法估计精确度不高、频谱利用率低的问题,提出一种基于子空间的盲信道估计算法。区别于传统的子空间方法,该算法通过空间上的接收分集技术引入数据冗余进行盲信道估计,不需要发送导频序列,从而提高了频谱利用率。仿真结果表明,该算法可以有效地估计信道,而且估计性能优于传统导频方法。
关键词 滤波器组多载波偏移幅度调制; 信道估计; 子空间; 导频
基金项目 江西省教育厅科技项目(GJJ170915,GJJ170894)
国家自然科学基金青年基金资助项目(61701144)
海南省自然科学基金资助项目(617024)
本文URL http://www.arocmag.com/article/01-2019-05-042.html
英文标题 Channel estimation for FBMC/OQAM systems based on subspace method
作者英文名 Wang Han, Liao Jianqing, Wang Xianpeng
机构英文名 1.College of Physical Science & Engineering Technology,Yichun University,Yichun Jiangxi 336000,China;2.State Key Laboratory of Marine Resources Utilization in the South China Sea,Hainan University,Haikou 570228,China
英文摘要 The conventional preamble-based channel estimation schemes for filter bank multi-carrier with offset quadrature amplitude modulation(FBMC/OQAM) systems have low estimation accuracy and the use of preamble for channel estimation decreases the system's spectrum efficiency. This paper proposed a subspace blind channel estimation method for FBMC/OQAM systems. The proposed method distinguished itself from previously preamble based methods by utilizing spatial diversity technique to introduce data redundancy for blind channel estimation, thereby leading to high spectral utilization. Simulation results verify the efficacy of the proposed method in FBMC/OQAM systems and show that the proposed method can provide significantly root mean square error(RMSE) performance improvement than conventional preamble based methods at high SNRs.
英文关键词 FBMC/OQAM; channel estimation; subspace; preamble
参考文献 查看稿件参考文献
 
收稿日期 2017/12/4
修回日期 2018/1/24
页码 1482-1485,1489
中图分类号 TN911;TP301.6
文献标志码 A