为了获得性能高复杂度低的抗多径衰落接收机,该文将快速近似幂迭代(Fast approximated power iteration,FAPI)子空间跟踪算法应用到Rake接收机中,实现一种新型的自适应Rake接收机。采用Rake接收机来消除码分多址通信系统中多径衰落,利用...为了获得性能高复杂度低的抗多径衰落接收机,该文将快速近似幂迭代(Fast approximated power iteration,FAPI)子空间跟踪算法应用到Rake接收机中,实现一种新型的自适应Rake接收机。采用Rake接收机来消除码分多址通信系统中多径衰落,利用FAPI算法实现对信道参数的精准估计,从而进一步改善了Rake接收机的误码率性能。同时,由于FAPI算法的低复杂度,该文所提出的新型Rake接收机也具有复杂度低的特点。实验仿真结果表明:FAPI Rake接收机是一种高性能低复杂度的抗多径接收机。展开更多
We consider an Iterated-Subspace Minimization(ISM) method for solving large-scale unconstrained minimization problems. At each major iteration of the method,a two-dimensional manifold, the iterated subspace, is constr...We consider an Iterated-Subspace Minimization(ISM) method for solving large-scale unconstrained minimization problems. At each major iteration of the method,a two-dimensional manifold, the iterated subspace, is constructed and an approximate minimizer of the objective function in this manifold then determined, and a symmetric rank-one updating is used to solve the inner minimization problem.展开更多
文摘为了获得性能高复杂度低的抗多径衰落接收机,该文将快速近似幂迭代(Fast approximated power iteration,FAPI)子空间跟踪算法应用到Rake接收机中,实现一种新型的自适应Rake接收机。采用Rake接收机来消除码分多址通信系统中多径衰落,利用FAPI算法实现对信道参数的精准估计,从而进一步改善了Rake接收机的误码率性能。同时,由于FAPI算法的低复杂度,该文所提出的新型Rake接收机也具有复杂度低的特点。实验仿真结果表明:FAPI Rake接收机是一种高性能低复杂度的抗多径接收机。
文摘We consider an Iterated-Subspace Minimization(ISM) method for solving large-scale unconstrained minimization problems. At each major iteration of the method,a two-dimensional manifold, the iterated subspace, is constructed and an approximate minimizer of the objective function in this manifold then determined, and a symmetric rank-one updating is used to solve the inner minimization problem.
