多径下CDMA系统的低复杂度自适应MMSE空时多用户检测
Low-Complexity Adaptive MMSE Space-time Multiuser Detection in Multipath CDMA Systems
高质量移动服务需要消除影响CDMA接收机的多址干扰和多径干扰。为实现这一目的，提出了MMSE 空时多用户检测[1]. 但是, 它们通常需要接收机较多的计算复杂度. 因此, 在此情况下, 需要有低复杂度MMSE 检测器。 本文采用Lagrange 乘积方法并扩展受限空间, 进而提出一种自适应MMSE空时多用户检测器. 仿真结果表明该方案可提供比传统的MMSE 检测提供显著的性能改善。
High quality mobile services have to eliminate multiple-access interference (MAI) and multipath inference that affect CDMA systems receivers. To this purpose, MMSE space-time multiuser detection has been proposed [1]. However, they usually need more complexity computation in receivers. Therefore, in such case, a low-complexity MMSE detector is required. In this paper, we adopt the Lagrange multipliers method and extend the constraint space, and present an adaptive MMSE space-time multiuser detector. Simulation results show that the scheme can offer significant performance enhancement over the conventional MMSE detection method.
鲁凌云、肖扬
通信无线通信
空时 多用户检测 低复杂度，算法
space-time multiuser detection low-complexity algorithm CDMA systems
鲁凌云,肖扬.多径下CDMA系统的低复杂度自适应MMSE空时多用户检测[EB/OL].(2005-07-06)[2025-07-22].http://www.paper.edu.cn/releasepaper/content/200507-43.点此复制
评论