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提出一种脉冲成型的信道估计算法,该算法将频域的信道信息转换为时域信道信息,通过多径信息和理论推导的脉冲信号就可以合成几乎没有失真的信道时域特性,并能消除大部分的噪声干扰,然后将信道的时域特性变换到频域,得到信道的频域特性.理论分析和仿真结果表明:该算法有良好的抗噪声性能和低的误码平层,同时对系统的定时精度不敏感.
A pulse shaping channel estimation algorithm is proposed. The algorithm transforms the frequency domain channel information into the time domain channel information. The multipath information and the theoretically derived pulse signal can synthesize almost undistorted channel time domain characteristics and can eliminate Most of the noise interference, and then transform the channel’s time-domain characteristics into the frequency domain to get the frequency-domain characteristics of the channel.Theoretical analysis and simulation results show that the algorithm has good anti-noise performance and low error floor, System timing accuracy is not sensitive.