摘要
针对无线数字通信中的载波频率同步问题,提出一种新的载波频偏估计算法。利用离散傅里叶变换(DFT)内插技术,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,适合突发通信方式。进行了MonteCarlo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 problem for the carrier frequency synchronization in wireless digitM communications, a new carrier frequency offset estimation algorithm was proposed. Using the discrete fourier transform （DFT） interpolation technique, the carrier frequency offset was estimated in a wide frequency offset range, and the estimation accuracy was greatly improved, relative to the DFT. This algorithm does not increase the DFT data length for burst work. Finally, a Monte Carlo simulation experiment was done, and the simulation results showed that the new algorithm not only had a wide range of estimates, but also had high estimation accuracy.
出处
《海军航空工程学院学报》
2014年第4期329-334,共6页
Journal of Naval Aeronautical and Astronautical University
关键词
载波同步
频偏估计
突发同步
DFT算法
carrier synchronization
frequency offset estimation
burst synchronization
the DFT algorithm
