CAJ | 학술논문

首先推导得到最小输出能力准则的无约束形式,得到易于NLMS算法实现形式;在该NLMS算法实现的基础上,通过蕈复归一化迭代运算推导,得到重复跌代的等效形式;基于该形式提出一种新的变步长NLMS算法,算法复杂度仍然为O(N),算法具有很好的健壮性,并且具有更好的检测综合性能.仿真表明,与文献[5]所提变参数的变步长NLMS算法相比,本文算法收敛速度更快且输出信干比更好.在同步CDMA系统下,其综合性能达到KALMAN,RLS相当水平.
수선추도득도최소수출능력준칙적무약속형식,득도역우NLMS산법실현형식;재해NLMS산법실현적기출상,통과심복귀일화질대운산추도,득도중복질대적등효형식;기우해형식제출일충신적변보장NLMS산법,산법복잡도잉연위O(N),산법구유흔호적건장성,병차구유경호적검측종합성능.방진표명,여문헌[5]소제변삼수적변보장NLMS산법상비,본문산법수렴속도경쾌차수출신간비경호.재동보CDMA계통하,기종합성능체도KALMAN,RLS상당수평.
Through analyzing another mode of the blind multi-user with LMS algorithm, a new algorithm based on least mean square (LMS) error is proposed in this paper. The new algorithm can get a faster convergence rate and a better SIR for the receiver of Blind MUD than the NLMS and the Algorithm proposed in the reference~([5])., the performance of the algorithm is comparable with the RLS and KALMAN to the synchronous CDMA system. At the same time, the SIR for the receiver is more stability.