计算机应用研究2012，Vol.29Issue(5)：1870-1872,1876,4.DOI:10.3969/j.issn.1001-3695.2012.05.072
MIMO-OFDM系统中基于压缩感知的信道参数反馈方法
Channel parameters feedback method based on compressed sensing for MIMO-OFDM system
摘要
Abstract
In order to solve the problems of large overhead in the feedback link of pre-coding due to the full channel state information , this paper proposed a channel parameters feedback method based on compressed sensing for MIMO-OFDM pre-coding. At the receiver, it observed channel state information which resulted from the channel estimation by compressed Sensing measurement matrix. Then a small amount of measurements were fed back to the sender. In the sender, it reconstructed the channel state information through orthogonal matching pursuit algorithm. Simulation results show that the compressed sensing in KLT which can recover the channel state information accurately via a small amount of samples that fed back to the transmitter is superior to the compressed sensing in DCT and decreases the overhead in the feedback link.关键词
多输入多输出正交频分复用/预编码/压缩感知/信道参数反馈/Karhunen-Loève变换/离散余弦变换/正交匹配追踪Key words
MIMO-OFDM/pre-coding/compressed sensing/channel parameters feedback/Karhunen-Loeve transform (KLT)/discrete cosine transform (DCT)/orthogonal matching pursuit (OMP)分类
信息技术与安全科学引用本文复制引用
傅洪亮,张贝贝,陶华伟,李明瑞..MIMO-OFDM系统中基于压缩感知的信道参数反馈方法[J].计算机应用研究,2012,29(5):1870-1872,1876,4.基金项目
河南省科技创新杰出青年基金资助项目(104100510008) （104100510008）
