System and method for excluding narrow band noise from a communication channel
First Claim
Patent Images
1. A signal filtering system comprising:
- an analog to digital converter adapted to sample a received signal and to produce a data stream corresponding to the received signal in the time domain;
a digital signal processing unit to implement spectral analysis of said received signal;
a filtering sub-system to filter said data stream based on results of said spectral analysis, the filtering sub-system having one or more digital filter elements, each filtering element adapted to filter one or more sets of frequency bands associated with one or more, respective, communication channels;
a controller to configure said one or more digital filter elements based on one or more selected parameters; and
a performance monitoring unit to monitor signal flow characteristics through the system and to indicate the signal flow characteristics to said controller,wherein said controller is adapted to reconfigure said one or more filtering elements if the signal flow characteristics are not within predefined ranges.
2 Assignments
0 Petitions
Accused Products
Abstract
A signal filtering system and method that may be used in conjunction with a repeater or an input stage of a base-station. The system may include an analog to digital converter adapted to sample a received signal and to produce a data stream corresponding to the received signal in the time domain, a filtering block having one or more digital filter elements, wherein each of said one or more filter elements is adapted to filter one or more sets of frequency bands associated with one or more communication channel, and a controller adapted to configure said one or more digital filter elements based on parameters stored on a database and/or based on parameters received via a modem.
127 Citations
35 Claims
-
1. A signal filtering system comprising:
-
an analog to digital converter adapted to sample a received signal and to produce a data stream corresponding to the received signal in the time domain; a digital signal processing unit to implement spectral analysis of said received signal; a filtering sub-system to filter said data stream based on results of said spectral analysis, the filtering sub-system having one or more digital filter elements, each filtering element adapted to filter one or more sets of frequency bands associated with one or more, respective, communication channels; a controller to configure said one or more digital filter elements based on one or more selected parameters; and a performance monitoring unit to monitor signal flow characteristics through the system and to indicate the signal flow characteristics to said controller, wherein said controller is adapted to reconfigure said one or more filtering elements if the signal flow characteristics are not within predefined ranges. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A method of signal filtering comprising:
-
sampling a received signal and producing a data stream corresponding to the received signal in the time domain; filtering said stream in accordance with one or more sets of frequency bands associated with one or more, respective, communication channels; configuring said one or more communication channels based on one or more selected parameters; monitoring signal flow characteristics; indicating the signal flow characteristics to said controller; and reconfiguring said one or more filtering elements if the signal flow characteristics are not within predefined ranges. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
-
-
34. A base station of a cellular communications system, said base station comprising:
-
an analog to digital converter adapted to sample a received signal and to produce a data stream corresponding to the received signal in the time domain; a digital signal processing unit to implement spectral analysis of said received signal; a filtering sub-system to filter said data stream, the filtering sub-system having one or more digital filter elements, each filtering element adapted to filter one or more sets of frequency bands associated with one or more, respective, communication channels; a controller to configure said one or more digital filter elements based on one or more selected parameters; and a performance monitoring unit to monitor signal flow characteristics through the system and to indicate the signal flow characteristics to said controller, wherein said controller is adapted to reconfigure said one or more filtering elements if the signal flow characteristics are not within predefined ranges.
-
-
35. A repeater for a cellular communications system, said repeater comprising:
-
an analog to digital converter adapted to sample a received signal and to produce a data stream corresponding to the received signal in the time domain; a digital signal processing unit to implement spectral analysis of said received signal; a filtering sub-system to filter said data stream, the filtering sub-system having one or more digital filter elements, each filtering element adapted to filter one or more sets of frequency bands associated with one or more, respective, communication channels; a controller to configure said one or more digital filter elements based on one or more selected parameters; and a performance monitoring unit to monitor signal flow characteristics through the system and to indicate the signal flow characteristics to said controller, wherein said controller is adapted to reconfigure said one or more filtering elements if the signal flow characteristics are not within predefined ranges.
-
Specification