【摘要】 针对通用滤波多载波(Universal Filtered Multi-Carrier, UFMC)信道估计中广义正交匹配追踪(Generalized Orthogonal Matching Pursuit, GOMP)算法里传统内积准则容易导致原子选择准确度下降，并且错误原子堆积造成支撑集过大的问题，提出采用Dice原子匹配准则替代原有内积准则进行原子相关度计算的方法，通过在原子选择阶段引入回溯步骤，可以提高原子重构的准确性，增强其对噪声的鲁棒性。根据理论分析和仿真的结果表明，改进后的算法性能有显著提升，与目前的GOMP算法相比较，能够在误码性能方面提升约3dB,有效增强UFMC系统的信道估计性能。更多还原

【Abstract】 Aiming at the problem that the traditional inner product criterion in the Generalized Orthogonal Matching Pursuit(GOMP)algorithm in Universal Filtered Multi-Carrier(UFMC)channel estimation can easily lead to a decrease in the accuracy of atomic selection, and the support set is too large due to the accumulation of wrong atoms, a method of atomic correlation calculation using Dice atomic matching criterion instead of the original inner product criterion is proposed. By introducing a backtracking step in the atomic selection stage, the accuracy of atomic reconstruction can be improved and its robustness to noise can be enhanced. The results of theoretical analysis and simulation experiments show that the performance of the improved algorithm is significantly improved. Compared with the current GOMP algorithm, the error performance is improved by about 3dB,which effectively enhances the channel estimation performance of UFMC system.更多还原