摘要
本文基于最小均方误差准则(MMSE),在发端对系统中多个用户的发送信号样式进行了设计优化,最大限度地避免用户间的相互干扰,使检测器输出与发送符号之间的最小均方误差达到理论下限。在最佳信号设计过程中,本文利用矩阵分块理论简化了算法、降低了运算复杂度。并且设计的信号在加性高斯白噪声信道条件下所获得的系统容量要优于Rose等人(2002)采用特征值迭代算法(Eigen Algorithm)设计的信号集合,文章最后通过仿真给予证实。
By employing MMSE (Minimal Mean Squared Error) criteria, the multi-user transceivers in this paper are optimized by adjusting their signatures and demodulations according to interferences around, which can reduce at most the co-interferences from users and minimize the lower bound of MMSE. During the design process, the striking improvements in both convergence and low-complexity are achieved by using matrix-blocking computation theory. And in practice, the designed signature assemble perform rather well than that by capacity-maximizing signature design method (Rose etc.2002) under the additive white Gaussian noise channel. Finally, some simulation results are also provided as proof.
出处
《电子与信息学报》
EI
CSCD
北大核心
2006年第6期1064-1067,共4页
Journal of Electronics & Information Technology
关键词
信号设计
多址干扰避免
最小均方误差(MMSE)
Signature optimization, Multiaccess interference avoidance, Minimum Mean Squared Error (MMSE)