一种基于迭代的频偏估计算法

A Frequency Offset Estimation Algorithm Based on Iterative

针对无线数字通信中的载波频率同步问题,提出一种载波频偏估计算法。利用离散傅里叶变换(DFT)内插技术,通过迭代算法,在较大频偏范围内估计出载波频偏。并且在估计精度上相对于DFT法有了很大的提高。这种算法不需要增加DFT数据长度,适合突发工作方式。最后进行了Monte Carlo仿真实验。仿真结果表明新算法不仅具有宽的估计范围,还具有高的估计精度。

According to the carrier frequency synchronization in wireless digital communications a carrier frequency offset estimation algorithm is proposed. Discrete Fourier Transform （DFT） interpolation estimated the carrier frequency offset by the iterative algorithm in a wide frequency offset range, and in the estimation accuracy relaive to the DFT method has been greatly improved. This algorithm does not increase the DFT data length for Burst work. Finally, a Monte Carlo simulation experiment, and simulation results show that the new algorithm not only has a wide range of estimates, but also has a high estimation accuracy.