WO2009029628A3 - System and method for estimating noise power level in a multi-signal communications channel - Google Patents

System and method for estimating noise power level in a multi-signal communications channel Download PDF

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Publication number
WO2009029628A3
WO2009029628A3 PCT/US2008/074343 US2008074343W WO2009029628A3 WO 2009029628 A3 WO2009029628 A3 WO 2009029628A3 US 2008074343 W US2008074343 W US 2008074343W WO 2009029628 A3 WO2009029628 A3 WO 2009029628A3
Authority
WO
WIPO (PCT)
Prior art keywords
noise power
communications channel
power level
signal communications
estimating noise
Prior art date
Application number
PCT/US2008/074343
Other languages
French (fr)
Other versions
WO2009029628A2 (en
Inventor
Edward R Beadle
Original Assignee
Harris Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harris Corp filed Critical Harris Corp
Priority to JP2010520351A priority Critical patent/JP5038500B2/en
Priority to CA2695648A priority patent/CA2695648A1/en
Priority to EP08798715A priority patent/EP2204000A2/en
Publication of WO2009029628A2 publication Critical patent/WO2009029628A2/en
Publication of WO2009029628A3 publication Critical patent/WO2009029628A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication

Abstract

A system estimates noise power in a scalar, multi-signal communications channel. A data sampler collects N data samples from communications signals received from the communications channel. A module forms a covariance matrix of the N data samples based on a model order estimate. A module also computes the eigenvalue decomposition of the covariance matrix and ranks resultant eigenvalues from the minimum to the maximum for determining the noise power.
PCT/US2008/074343 2007-08-27 2008-08-26 System and method for estimating noise power level in a multi-signal communications channel WO2009029628A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2010520351A JP5038500B2 (en) 2007-08-27 2008-08-26 System and method for estimating noise power level in a multi-signal communication channel
CA2695648A CA2695648A1 (en) 2007-08-27 2008-08-26 System and method for estimating noise power level in a multi-signal communications channel
EP08798715A EP2204000A2 (en) 2007-08-27 2008-08-26 System and method for estimating noise power level in a multi-signal communications channel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/845,186 US7555064B2 (en) 2007-08-27 2007-08-27 System and method for estimating noise power level in a multi-signal communications channel
US11/845,186 2007-08-27

Publications (2)

Publication Number Publication Date
WO2009029628A2 WO2009029628A2 (en) 2009-03-05
WO2009029628A3 true WO2009029628A3 (en) 2009-04-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/074343 WO2009029628A2 (en) 2007-08-27 2008-08-26 System and method for estimating noise power level in a multi-signal communications channel

Country Status (5)

Country Link
US (1) US7555064B2 (en)
EP (1) EP2204000A2 (en)
JP (1) JP5038500B2 (en)
CA (1) CA2695648A1 (en)
WO (1) WO2009029628A2 (en)

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Also Published As

Publication number Publication date
JP2010536276A (en) 2010-11-25
WO2009029628A2 (en) 2009-03-05
US7555064B2 (en) 2009-06-30
EP2204000A2 (en) 2010-07-07
JP5038500B2 (en) 2012-10-03
US20090060015A1 (en) 2009-03-05
CA2695648A1 (en) 2009-03-05

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