CA2575981C - Distance division multiplexing - Google Patents

Distance division multiplexing Download PDF

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Publication number
CA2575981C
CA2575981C CA2575981A CA2575981A CA2575981C CA 2575981 C CA2575981 C CA 2575981C CA 2575981 A CA2575981 A CA 2575981A CA 2575981 A CA2575981 A CA 2575981A CA 2575981 C CA2575981 C CA 2575981C
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CA
Canada
Prior art keywords
subband
sources
signals
signal
spectra
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CA2575981A
Other languages
English (en)
French (fr)
Other versions
CA2575981A1 (en
Inventor
Venkata Guruprasad
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from US11/069,152 external-priority patent/US7106801B1/en
Application filed by Individual filed Critical Individual
Publication of CA2575981A1 publication Critical patent/CA2575981A1/en
Application granted granted Critical
Publication of CA2575981C publication Critical patent/CA2575981C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
CA2575981A 2004-08-24 2005-06-15 Distance division multiplexing Expired - Fee Related CA2575981C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US60368804P 2004-08-24 2004-08-24
US60/603,688 2004-08-24
US11/069,152 US7106801B1 (en) 2005-03-01 2005-03-01 Distance division multiplexing
US11/069,152 2005-03-01
PCT/US2005/021082 WO2006023012A2 (en) 2004-08-24 2005-06-15 Distance division multiplexing

Publications (2)

Publication Number Publication Date
CA2575981A1 CA2575981A1 (en) 2006-03-02
CA2575981C true CA2575981C (en) 2013-10-29

Family

ID=35968006

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2575981A Expired - Fee Related CA2575981C (en) 2004-08-24 2005-06-15 Distance division multiplexing

Country Status (4)

Country Link
EP (1) EP1782593A4 (ja)
JP (1) JP4824026B2 (ja)
CA (1) CA2575981C (ja)
WO (1) WO2006023012A2 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1908237A4 (en) * 2005-07-13 2013-01-30 Venkata Guruprasad SPECTRA BASED ON DISTANCE WITH UNIFORM SAMPLING SPECTROMETRY
CA2891591C (en) 2012-12-07 2016-02-09 Evolution Engineering Inc. Method and apparatus for multi-channel downhole electromagnetic telemetry
US9803473B2 (en) 2015-10-23 2017-10-31 Schlumberger Technology Corporation Downhole electromagnetic telemetry receiver

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
JP3397282B2 (ja) * 1995-08-14 2003-04-14 日本電信電話株式会社 周波数帯域分割型反響消去装置
DK1814243T3 (da) * 1996-06-27 2013-01-21 Interdigital Tech Corp Basisstation og abonnentenhed i et CDMA kommunikationssystem
DE59605654D1 (de) * 1996-09-20 2000-08-31 Siemens Ag Polarisationsdiversity-System für Mobilkommunikation mit adaptiver Gestaltung der Abstrahlungscharakteristik
US7180580B2 (en) * 2004-07-02 2007-02-20 Venkata Guruprasad Passive distance measurement using spectral phase gradients

Also Published As

Publication number Publication date
JP2008511250A (ja) 2008-04-10
WO2006023012A2 (en) 2006-03-02
EP1782593A4 (en) 2013-03-27
JP4824026B2 (ja) 2011-11-24
WO2006023012A3 (en) 2006-04-06
CA2575981A1 (en) 2006-03-02
EP1782593A2 (en) 2007-05-09

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Effective date: 20210615