摘要
提出了一种基于导频的自适应信道估计算法,该算法在最小平方误差(LS)算法的基础上采用两维插值方法估计出无线信道的频率响应:在时域上进行线性插值,在频域上根据系统软判决信噪比自适应地进行线性插值或维纳滤波插值。在地面数字视频广播(DVB-T)系统中的仿真结果表明,该算法具有较高的性能,而且在信噪比较高的情况下,它的复杂度很低,可以进一步应用于手持数字视频广播(DVB-H)系统中。
A novel adaptive pilot-based channel estimation algorithm is proposed in this paper.h is based on Least Square error（LS） algorithm and uses tow-dimensional interpolation technique to estimate the frequency response of the wireless channel,that is,performing linear interpolation in time domain first and then linear or wiener interpolation adaptively in frequency domain.Simulation based on DVB-T system shows that the proposed algorithm works well and can be further applied to DVB-H systems due to its low complexity when SNR is high.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第31期117-119,193,共4页
Computer Engineering and Applications
