Estimation method for space correlation characteristics of noise in a time slotted CDMA system
First Claim
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.
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Abstract
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.
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Citations
6 Claims
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1. A method for estimating space correlation characteristics of noise in a time slotted CDMA system, comprising the steps of:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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