多速率CDMA系统下行波束成形的联合多变量优化

下行波束成形能用来限制由于高速率数据用户引起的干扰，也能改善系统性能。另一方面，功率控制、数据速度分配也是改善无线多媒体通信频谱利用率的两种基本技术。在文章里，阐述了DS—CDMA系统中给定系统吞吐量和软的目标SIR门限值条件下，下行波束成形权值和数据速率的优化问题。基于上面的内容，给出了一种改进的IVPW算法，可以将其应用于未来的无线通信系统，为所有用户提供稳定的最大吞吐量。

Downlink Beamforming Optimization of Multivariable for Multi-rate CDMA System

Downlink beamforming can be used to limit strong interference induced by high data rate users, thereby improve the system performance. On the other hand, power control and data rate allocation are two fundamental techniques for improving the spectral efficiency of wireless multimedia communications. In this paper, an optimal problem is formulated which jointly optimizes downlink beamforming weights and data rates for given system throughput and soft target SIR thresholds using DS-CDMA technology. And a modified IVPW algorithm is presented, which can be used to the future wireless communication system.