fixed step size造句

• The main works of the dissertation can be summarized as follows : 1 . by exploring the model of ds-cdma systems, the performances of the decorrelating multi-user detector and minimum mean square error ( mmse ) multi-user detector are studied . further, the performances of blind adaptive mud and adaptive mmse mud ( lms style ) with fixed step size and varied step size respectively are studied based on mmse linear detect algorithms
  本文主要研究次最优的线性多用户检测技术，工作具体如下：从ds-cdma系统模型出发，研究了解相关多用户检测器和mmse多用户检测器的性能，并以mmse线性检测技术为基础，研究了变步长和固定步长的lms-mmse自适应多用户检测器和基于最小输出能量准则的盲自适应多用户检测器。