1. A method for estimating space correlation characteristics of noise in a time slotted CDMA system, comprising the steps of: a. Making channel estimation for a received signal of each antenna of an antenna array, respectively, to obtain an original channel estimation result including values of taps, P in number, where P is a period of a basic code used for channel estimation; b. Separating a signal response component and a noise response component from said original channel estimation result to obtain a noise response matrix of said antenna array; and c. Making correlation operation with said noise response matrix of the antenna array to obtain a space correlation matrix of noise.