基于MMSE多用户检测的功率控制算法

Power Control Algorithm Based on MMS E in Multiuser Detection

在码分多址(CDMA)系统中,功率控制被认为是所有关键技术的核心,可以有效地克服远近效应和多址干扰的影响。提出了一种新的基于最小均方误差(MMSE)多用户检测的分布式功率控制算法。实验结果表明,该算法具有收敛速度快,功率控制效果好的优点,使用该算法可以有效降低系统内用户发射的总功率,同时系统容量也得到一定程度的提高。

Power Control is considered the core of all the key technologies in CDMA sy stem,which can overcome the near -far effect and multiple access interference.A pow er control algorithm based on the MMSE(Minimum Mean Squared Error)in multiuse detection is proposed.T he simulation results show that the convergence rate of this algorit hm is super and the effects resulted f orm the power control algorithm are perfect.The total transmitter powe r of all users is reduced and the capacity of the system is improved with the proposed algorithm.