CAJ | 학술논문

针对最大熵方法（MEM）存在的迭代计算量大和误差扩散的问题，以及 ESPRIT算法存在的平坦快衰落信道预测精度受制于自相关函数估计的问题，文中提出基于扩展Prony 算法的平坦快衰落信道预测算法。扩展 Prony 算法通过最小二乘法拟合和计算高次代数方程来求复根，无需估计自相关函数且可批量计算，能够提高预测精度和运算效率。理论和仿真结果表明，扩展 Prony 算法较 MEM和 ESPRIT 算法具有更高的预测精度，同预测精度下具有3～5dB 的信噪比优势，且算法性能稳定，运算效率高。
침대최대적방법（MEM）존재적질대계산량대화오차확산적문제，이급 ESPRIT산법존재적평탄쾌쇠락신도예측정도수제우자상관함수고계적문제，문중제출기우확전Prony 산법적평탄쾌쇠락신도예측산법。확전 Prony 산법통과최소이승법의합화계산고차대수방정래구복근，무수고계자상관함수차가비량계산，능구제고예측정도화운산효솔。이론화방진결과표명，확전 Prony 산법교 MEM화 ESPRIT 산법구유경고적예측정도，동예측정도하구유3～5dB 적신조비우세，차산법성능은정，운산효솔고。
In order to overcome the high iteration load and error diffusion existing in maximum entropy method (MEM)and to improve the prediction accuracy of ESPRIT algorithm subjected to autocorrelation function estima-tion,a flat fast-fading channel prediction algorithm on the basis of extended Prony algorithm is proposed.By means of extended Prony algorithm,complex roots can be obtained via least square fitting and higher algebraic equations without estimating autocorrelation function,batch computation becomes possible,and thus both the prediction accu-racy and the computation efficiency improve.Theoretical and simulated results show that,in comparison with MEM and ESPRIT algorithms,extended Prony algorithm provides higher prediction accuracy,3 ~5 dB advantages at the same prediction accuracy,more steady performance and higher operation efficiency.