IP Library › Granted Patent US 8,068,803
Granted Patent B2
US 8,068,803 · App. 12/621,788 · Granted Nov 29, 2011

Method and apparatus for optimizing signal processing

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Quick Facts
Patent No.
US 8,068,803
App. No.
12/621,788
Granted
Nov 29, 2011
Kind
B2
Abstract

An booster/amplifier receives a plurality of RF signals, including a subject RF signal. A location-based signal spectrum is determined by performing either a frequency scan or an information lookup operation. An initial filter bandwidth for the booster/amplifier is set based at least in part on the determined signal spectrum and a target time delay interference. In one embodiment, the initial filter bandwidth is set such that both the TDI and ACI are optimized/minimized. The initial filter bandwidth subsequently may be adjusted from its initial value based on actual measured ACI and/or TDI values.

Claims (49)

1. A method for optimizing an RF signal booster's filter bandwidth, the method comprising the acts of:

(a) measuring adjacent-channel interference (ACI) for a subject RF signal having a subject frequency;

(b) decreasing a current bandwidth of an RF signal filter if the measured ACI exceeds a predetermined threshold;

(c) re-measuring ACI of the subject signal, following said decreasing, to determine if the ACI still exceeds the predetermined threshold;

(d) repeating (b) and (c) until the ACI no longer exceeds the predetermined threshold hold;

(e) measuring time delay interference (TDI) for the subject RF signal;

(f) increasing the current bandwidth of the RF signal filter if the measured TDI is above a target TDI;

(g) re-measuring the TDI of the subject RF signal, following said increasing, to determine if the TDI still exceeds the target TDI; and

(h)) repeating (f) and (g) until the ACI no longer exceeds the predetermined threshold hold.

2. The method of claim 1 , wherein the target TDI is based at least in part on a signal type of the subject RF signal.

3. The method of claim 2 , wherein the signal type is selected from the list consisting of: a data signal and a voice signal.

4. The method of claim 1 , wherein the predetermined threshold is based on at least one of a signal strength for the subject RF signal and a signal noise level for the subject RF signal.

5. The method of claim 1 , wherein (b) decreasing the current bandwidth of the RF signal filter comprises (b) decreasing the current bandwidth of the RF signal filter comprises by a first predetermined increment if the measured ACI exceeds a predetermined threshold.

6. The method of claim 5 , wherein (f) increasing the current bandwidth of the RF signal filter comprises (f) increasing the current bandwidth of the RF signal filter by a second predetermined increment if the measured TDI is above a target TDI.

7. The method of claim 6 , wherein the first predetermined increment is larger than the second predetermined increment.

8. The method of claim 1 , wherein (e)-(h) are performed before (a)-(d).

9. An apparatus comprising:

a radio frequency (RF) receiver circuit;

an RF signal filter electrically coupled to the RF receiver circuit; and

a processor coupled to the RF receiver circuit and the RF signal filter, the processor configured to:

(a) measure adjacent-channel interference (ACI) for a subject RF signal received by the RF receiver circuit at a subject frequency;

(b) decrease a current bandwidth of the RF signal filter if the measured ACI exceeds a predetermined threshold;

(c) re-measure ACI of the subject signal, following said decreasing, to determine if the ACI still exceeds the predetermined threshold;

(d) repeat (b) and (c) until the ACI no longer exceeds the predetermined threshold hold;

(e) measure time delay interference (TDI) for the subject RF signal;

(f) increase the current bandwidth of the RF signal filter if the measured TDI is above a target TDI;

(g) re-measure the TDI of the subject RF signal, following said increasing, to determine if the TDI still exceeds the target TDI; and

(h)) repeat (f) and (g) until the ACI no longer exceeds the predetermined threshold hold.

10. The apparatus of claim 9 , wherein the target TDI is based at least in part on a signal type of the subject RF signal.

11. The apparatus of claim 10 , wherein the signal type is selected from the list consisting of: a data signal and a voice signal.

12. The apparatus of claim 9 , wherein the predetermined threshold is based on at least one of a signal strength for the subject RF signal and a signal noise level for the subject RF signal.

13. The apparatus of claim 9 , wherein the processor is further configured to (b) decrease the current bandwidth of the RF signal filter comprises by a first predetermined increment if the measured ACI exceeds a predetermined threshold.

14. The apparatus of claim 13 , wherein the processor is further configured to (f) increase the current bandwidth of the RF signal filter by a second predetermined increment if the measured TDI is above a target TDI.

15. The apparatus of claim 14 , wherein the first predetermined increment is larger than the second predetermined increment.

16. The apparatus of claim 9 , wherein the processor is configured to perform (e)-(h) before (a)-(d).

17. An apparatus comprising:

a radio frequency (RF) receiver circuit;

an RF signal filter electrically coupled to the RF receiver circuit; and

a processor coupled to the RF receiver circuit and the RF signal filter, the processor configured to:

receive a subject RF signal at a subject frequency,

measure an actual adjacent-channel interference (ACI) for the subject RF signal,

measure an actual time delay interference (TDI) for the subject RF signal,

compare the actual ACI to a predetermined threshold,

compare the actual TDI to a target TDI, and

adjust a bandwidth of the RF signal filter based on results of said comparing the actual ACI to the threshold value and said comparing of the actual TDI to the target TDI.

18. The apparatus of claim 17 , wherein the processor is further configured to receive a plurality of RF signals, including the subject RF signal, across a range of frequencies.

19. The apparatus of claim 17 , wherein the target TDI is based at least in part on a signal type of the subject RF signal.

20. The apparatus of claim 17 , wherein the processor is further configured to adjust the bandwidth of the RF signal filter by increasing a current signal filter bandwidth when the actual TDI is greater than the target TDI, and decreasing the current signal filter bandwidth when the adjacent-channel interference exceeds the predetermined threshold.

21. The apparatus of claim 17 , wherein the predetermined threshold is based on at least one of a signal strength for the subject RF signal and a signal noise level for the subject RF signal.

Assignments (9)
RELEASE OF SECURITY INTEREST Recorded Apr 6, 2022
From: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: CHARLESTON MARINE CONTAINERS, INC.; DIGITAL FUSION, INC.; KRATOS INTEGRAL HOLDINGS, LLC; KRATOS TECHNOLOGY & TRAINING SOLUTIONS, INC.; KRATOS UNMANNED AERIAL SYSTEMS, INC. (F/K/A COMPOSITE ENGINEERING INC.); SAT CORPORATION
Reel/Frame 059616/0001 →
RELEASE OF SECURITY INTEREST Recorded Apr 6, 2022
From: TRUIST BANK, SUCCESSOR BY MERGER TO SUNTRUST BANK, AS COLLATERAL AGENT AND ADMINISTRATIVE AGENT
To: KRATOS INTEGRAL HOLDINGS, LLC; SAT CORPORATION; KRATOS TECHNOLOGY & TRAINING SOLUTIONS, INC.; CHARLESTON MARINE CONTAINERS, INC.; DIGITAL FUSION, INC.; KRATOS UNMANNED AERIAL SYSTEMS, INC. (F/K/A COMPOSITE ENGINEERING, INC.); GICHNER SYTEMS GROUP, INC.; MICRO SYSTEMS, INC.; SECUREINFO CORPORATION
Reel/Frame 059616/0151 →
AMENDED AND RESTATED INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Dec 7, 2017
From: KRATOS DEFENSE & SECURITY SOLUTIONS, INC.; AI METRIX, INC.; AIRORLITE COMMUNICATIONS, INC.; AVTEC SYSTEMS, INC.; BSC PARTNERS, LLC; CARLSBAD ISI, INC.; CHARLESTON MARINE CONTAINERS INC.; DALLASTOWN REALTY I, LLC; DALLASTOWN REALTY II, LLC; DEFENSE SYSTEMS, INCORPORATED; DEI SERVICES CORPORATION; DFI REALTY, LLC; DIGITAL FUSION SOLUTIONS, INC.; DIGITAL FUSION, INC.; DIVERSIFIED SECURITY SOLUTIONS, INC.; DTI ASSOCIATES, INC.; GENERAL MICROWAVE CORPORATION; GENERAL MICROWAVE ISRAEL CORPORATION; GICHNER SYSTEMS GROUP, INC.; GICHNER SYSTEMS INTRERNATIONAL, INC.; HAVERSTICK CONSULTING, INC.; HAVERSTICK GOVERNMENT SOLUTIONS, INC.; HENRY BROS. ELECTRONICS, INC.; HENRY BROS. ELECTRONICS INC.; HENRY BROS. ELECTRONICS, L.L.C.; HGS HOLDINGS, INC.; JMA ASSOCIATES, INC.; KPSS GOVERNMENT SOLUTIONS, INC; KRATOS COMMUNICATIONS, INC.; KRATOS DEFENSE & ROCKET SUPPORT SERVICES, INC.; KRATOS INTEGRAL HOLDINGS, LLC; KRATOS INTEGRAL SYSTEMS INTERNATIONAL, INC.; KRATOS PUBLIC SAFETY & SECURITY SOLUTIONS, INC.; KRATOS SOUTHEAST, INC.; KRATOS SPACE & MISSILE DEFENSE SYSTEMS, INC.; KRATOS SYSTEMS AND SOLUTIONS, INC.; KRATOS TECHNOLOGY & TRAINING SOLUTIONS, INC.; KRATOS TEXAS, INC.; KRATOS UNMANNED AERIAL SYSTEMS, INC.; KRATOS UNMANNED SYSTEMS SOLUTIONS, INC.; LVDM, INC.; MADISON RESEARCH CORPORATION; MICRO SYSTEMS, INC.; MSI ACQUISITION CORP.; POLEXIS, INC.; REAL TIME LOGIC, INC.; REALITY BASED IT SERVICES LTD.; ROCKET SUPPORT SERVICES, LLC; SAT CORPORATION; SCT ACQUISITION, LLC; SCT REAL ESTATE, LLC; SECUREINFO CORPORATION; SHADOW I, INC.; SHADOW II, INC.; SUMMIT RESEARCH CORPORATION; WFI NMC CORP.; KRATOS SOUTHWEST L.P.
To: SUNTRUST BANK
Reel/Frame 044742/0845 →
SECURITY INTEREST Recorded Dec 1, 2017
From: AIRORLITE COMMUNICATIONS, INC.; CHARLESTON MARINE CONTAINERS, INC.; DIGITAL FUSION, INC.; HENRY BROS. ELECTRONICS, INC. (DE); HENRY BROS. ELECTRONICS, INC. (NJ); KRATOS INTEGRAL HOLDINGS, LLC; KRATOS TECHNOLOGY & TRAINING SOLUTIONS, INC.; KRATOS UNMANNED AERIAL SYSTEMS, INC.; GICHNER SYSTEMS GROUP, INC.; MICRO SYSTEMS, INC.; SAT CORPORATION; SECUREINFO CORPORATION
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 044593/0678 →
RELEASE OF SECURITY INTEREST Recorded Nov 21, 2017
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: AIRORLITE COMMUNICATIONS, INC.; CHARLESTON MARINE CONTAINERS INC.; KRATOS UNMANNED AERIAL SYSTEMS, INC.; DIGITAL FUSION, INC.; GENERAL MICROWAVE CORPORATION; HENRY BROS. ELECTRONICS, INC.; KRATOS INTEGRAL HOLDINGS, LLC; KRATOS TECHNOLOGY & TRAINING SOLUTIONS, INC.; KRATOS DEFENSE & SECURITY SOLUTIONS, INC.; SECUREINFO CORPORATION
Reel/Frame 044195/0924 →
SECURITY INTEREST Recorded Jan 30, 2015
From: AIRORLITE COMMUNICATIONS, INC.; CHARLESTON MARINE CONTAINERS INC.; COMPOSITE ENGINEERING, INC.; DIGITAL FUSION, INC.; GENERAL MICROWAVE CORPORATION; HENRY BROS. ELECTRONICS, INC.; KRATOS INTEGRAL HOLDINGS, LLC; KRATOS TECHNOLOGY & TRAINING SOLUTIONS, INC.; KRATOS DEFENSE & SECURITY SOLUTIONS, INC.; SECUREINFO CORPORATION
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 034861/0796 →
RELEASE OF SECURITY INTEREST Recorded Jun 18, 2014
From: WILMINGTON TRUST, NATIONAL ASSOCIATION (AS SUCCESSOR BY MERGER TO WILMINGTON TRUST FSB)
To: AIRORLITE COMMUNICATIONS, INC.
Reel/Frame 033200/0081 →
SECURITY INTEREST Recorded Aug 9, 2011
From: AIRORLITE COMMUNICATIONS, INC.
To: WILMINGTON TRUST N.A. (AS SUCCESSOR BY MERGER TO WILMINGTON TRUST FSB)
Reel/Frame 026724/0149 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 29, 2010
From: MASOIAN, LEON MICHAEL
To: AIRORLITE COMMUNICATIONS, INC.
Reel/Frame 023873/0847 →