【摘要】 在使用阵列天线的DS CDMA系统的基站中,利用改进的DirectMatrixInversion(DMI)算法对接收到的定位信号进行TOA估计,其精度可以小于一个码片宽度,并可分辨出每个用户各条主要的多径信号,取其中有最小TOA的路径为主径,用于用户的位置估计.讨论了算法中各种参数的影响,进一步用RLS盲算法对用户的TOA进行跟踪.更多还原

【Abstract】 With antenna array at base station of DSCDMA system,TOA estimation can be accomplished by using improved Direct Matrix Inversion (DMI) algorithm for radiolocation technology. It can distinguish each main multipath of every user. The accuracy will reach less than one chip. The influences of some parameters in this TOA estimation have been discussed. After taking the shortest TOA as the main path,TOA tracking can be realized by using RLS blind algorithm.更多还原