提出了一种新的基于逐级干扰相消技术的多用户检测器,分析了检测器的干扰相消原理,并给出了该检测器的系统框图及其误码性能.该检测器具有结构简单、计算复杂度低的特点,其性能较传统的多用户检测器性能有较大幅度的提高,并达到了单用户情况下检测器的性能. A new multi-user detector based on step by step interference cancellation technique is proposed. The principle of detector’s interference cancellation is analyzed, and the system block diagram and error performance of the detector are given. The detector has the structure Simple, low computational complexity, the performance of the multi-user detector is greatly improved compared with that of the traditional multi-user detector, and the performance of the detector under single-user conditions is achieved.