【作者】 董杰； 孙怡；

【Author】 Dong Jie, Sun Yi (School of Electronics and Information Engineering,Dalian University of Technology, Dalian 116024)

【机构】 大连理工大学电子与信息工程学院；

【摘要】 本文提出了一种新的基于子空间方法的OFDM载波频偏盲估计算法。利用OFDM符号中固有的循环前缀(CP)构造子空间模型,避免了传统算法使用虚子载波构造子空间时会导致系统频谱效率下降的问题。仿真结果表明,新算法能够有效的提高系统频谱效率,同时具有与传统算法相当的估计性能。更多还原

【Abstract】 A new subspace based carrier frequency offset estimation algorithm is proposed, which uses the inherent part of the OFDM symbol—cyclic prefix, to estimate the carrier offset estimator, while most existing subspace based algorithms rely on the virtual subcarriers, which may reduce the spectral efficiency of OFDM systems. Numerical results show that the new algorithm can achieve comparable performance while the spectral efficiency is dramatically improved.更多还原