Estimating interference in a communication system
AssigneeQUALCOMM Incorporated
InventorStein A. Lundby
Life of this patent
Estimating the term…
Abstract
A method and apparatus for improving the transmission of an information signal having message information. A received information signal is formed from an information signal transmitted through an information channel. The received information signal has signal noise. The message information is removed from the received information signal to provide a symbol sequence that is then applied to a first filter to provide a first filtered signal. The power of the first filtered signal is determined and applied to a second filter to provide a second filtered signal representative of the signal noise of the received information signal.
Claims15
In a code division multiple access system, a method for improving the transmission of an information signal having message information in a communication system with an information channel, comprising the steps of:
- (a) receiving the information signal after transmission through the information channel wherein the received information signal has signal noise;
- (b) removing the message information from the received information signal to provide a symbol sequence;
- (c) applying the symbol sequence to a first filter to provide a first filtered signal;
- (d) determining the power of the first filtered signal to provide a determined power signal;
- and
- (e) applying the determined power signal to a second filter to provide a second filtered signal representative of the signal noise of the received information signal.
A code division multiple access communication system having an information channel for performing a method for improving the transmission of an information signal having message information, comprising;
- (a) a received information signal having signal noise after the received information signal is transmitted through the information channel;
- (b) a symbol sequence formed by removing the message information from the received information signal;
- (c) a first filtered signal formed by applying the symbol sequence to a first filter;
- (d) a determined power signal formed by determining the power of the first filtered signal;
- and
- (e) a second filtered signal representative of the signal noise of the received information signal formed by applying the determined power signal to a second filter.
A code division multiple access communication system having an information channel for performing a method for improving the transmission of an information signal having message information, comprising:
- (a) means for receiving the information signal after transmission through the information signal has signal noise;
- (b) means for removing the message information from the received information signal to provide a symbol sequence;
- (c) means for applying the symbol sequence to a first filter to provide a first filtered signal;
- (d) means for determining the power of the first filtered signal to provide a determined power signal;
- and
- (e) means for applying the determined power signal to a second filter to provide a second filtered signal representative of the signal noise of the received information signal.
Dependencies are inferred from the claim text.