Being the manner which presumes the three-dimensional correlation property of noise to presumption mannered null time

摘要

The invention discloses a method for estimating the space correlation characteristics of noise in a time slotted CDMA system. The method comprises primarily the steps of: making channel estimation for the received signal of each antenna of an antenna array, respectively, to obtain the original channel estimation result that includes values of taps, P in number, where P is the period of the basic code used for channel estimation; separating the signal response component and the noise response component from said original channel estimation result to obtain a noise response matrix of said antenna array; and making correlation operation with said noise response matrix to obtain a space correlation matrix of noise. By using the channel estimation characteristics of the time slotted CDMA system, the invention provides a method for estimating the space correlation characteristics of noise in a time slotted CDMA system. The method is simple, effective, and of good numerical stability, displaying good performance of estimation in the practical range of signal-to-noise ratio of the system. IMAGE