摘要
提出了一种基于子空间的改进OFDM系统半盲信道估计算法,利用信号子空间和噪声子空间的正交特性将子空间分解,实现了色噪声背景下高效半盲信道估计.仿真结果表明,在时变信道下具有更好的收敛性,体现了算法好的稳定性以及快速跟踪系统变化的性能.
This paper presents an improved semi-blind channel estimation algorithm in the OFDM system based on subspace, which uses the orthoganality of signal subspace and noise subspace to decompose the subspace, realizing semi-blind channel estimation with great efficiency under the background of color noise. The simulation results suggest that the convergence rate is faster in the time varying channel, showing the good stability and fast tracking ability.
出处
《应用科技》
CAS
2007年第1期17-20,共4页
Applied Science and Technology
关键词
半盲
信道估计
子空间
色噪声
semi-blind
channel estimation
subspace
color noise
