关键词: 最小输出能量盲多用户检测器, 约束向量, 线性约束, 鲁棒二次约束

Abstract: Blind multi-user detection based on Minimum Output Energy（MOE） can directly and simply achieve the parameters of multi-user detectors without estimating channel parameters.In this algorithm，constraint vector has an important role because it affects the optimal weight vector of detectors.The basic principle of MOE blind multi-user detection for different constraint vector is analyzed，and on this basis，MOE blind multi-user detectors is classified as linear constraint MOE blind multi-user detectors and robust quadratic constraint MOE blind multi-user detectors.At last，the performance of several detectors is compared by computer simulations.

Key words: Minimum Output Energy（MOE） blind multi-user detectors, constraint vector, linear constraint, robust quadratic constraint