CAJ | 학술논문

针对单频信号，提出一种基于数据辅助的高性能载波频偏估计算法。利用m序列对引导码进行扩频解扩，降低信号的噪声功率，提高频偏估计信号的信噪比增益，通过采用一种新的迭代方法，快速准确地获取频偏估计值。仿真结果表明，相比于文献[3，4，7]中的频偏估计算法，该算法估计方差小、估计精度高、估计范围宽，且复杂度低，具有很好的性能。
침대단빈신호，제출일충기우수거보조적고성능재파빈편고계산법。이용m서렬대인도마진행확빈해확，강저신호적조성공솔，제고빈편고계신호적신조비증익，통과채용일충신적질대방법，쾌속준학지획취빈편고계치。방진결과표명，상비우문헌[3，4，7]중적빈편고계산법，해산법고계방차소、고계정도고、고계범위관，차복잡도저，구유흔호적성능。
Aiming at the single-frequency signal ,a high-performance non-data-aided carrier frequency offset estimator was pro-posed .The algorithm extended spectrum of the boot code by using the m-sequence to reduce the noise power and to improve the signal-to-noise ratio of the frequency offset estimation signal ,then the carrier frequency offset estimation was extracted with high accuracy by using a new iterative method .Numerical simulations indicate the proposed algorithm performs better than the other methods mentioned in reference [3 ,4 ,7] which has smaller variance ,higher accuracy ,wider estimation and lower complexity .