摘要
在深入研究子空间方法盲多用户检测器子空间跟踪算法的基础上 ,针对OPAST算法中矩阵Z(i)的迭代运算过程导致子空间跟踪算法发散的问题 ,提出一种改进算法———newOPAST算法 ,并应用于盲MMSE多用户检测器中。仿真结果表明 ,该算法具有稳定的全局收敛性 ,并保持了较低的算法复杂度 。
From the foundation of the investigation on the blind multi user detector algorithm based on subspace tracking, a improved scheme newOPAST algorithm was proposed to combat the divergence of the subspace tracking algorithm in the iteration operation of the matrix Z(i) . The proposed method is applicable to the blind MMSE multi user detector. Simulation results show that this scheme provides similar output SNR and bit error rate (BER) as the classic algorithm with stable global convergence and much less computation complexity.
出处
《电波科学学报》
EI
CSCD
2004年第3期311-315,共5页
Chinese Journal of Radio Science
基金
国防重点实验室基金资助项目
