GB2417647B - Combining signals exhibiting multiple types of diversity - Google Patents

Combining signals exhibiting multiple types of diversity

Info

Publication number
GB2417647B
GB2417647B GB0518603A GB0518603A GB2417647B GB 2417647 B GB2417647 B GB 2417647B GB 0518603 A GB0518603 A GB 0518603A GB 0518603 A GB0518603 A GB 0518603A GB 2417647 B GB2417647 B GB 2417647B
Authority
GB
United Kingdom
Prior art keywords
diversity
multiple types
combining signals
signals exhibiting
exhibiting multiple
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
GB0518603A
Other versions
GB2417647A (en
GB0518603D0 (en
Inventor
George P Bortnyk
David J Lupia
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.)
Raytheon Co
Original Assignee
Raytheon Co
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 Raytheon Co filed Critical Raytheon Co
Priority claimed from GB0301193A external-priority patent/GB2385750B/en
Publication of GB0518603D0 publication Critical patent/GB0518603D0/en
Publication of GB2417647A publication Critical patent/GB2417647A/en
Application granted granted Critical
Publication of GB2417647B publication Critical patent/GB2417647B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/0871—Hybrid systems, i.e. switching and combining using different reception schemes, at least one of them being a diversity reception scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/084—Equal gain combining, only phase adjustments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB0518603A 2002-01-18 2003-01-20 Combining signals exhibiting multiple types of diversity Expired - Fee Related GB2417647B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35018802P 2002-01-18 2002-01-18
GB0301193A GB2385750B (en) 2002-01-18 2003-01-20 Combining signals exhibiting multiple types of diversity

Publications (3)

Publication Number Publication Date
GB0518603D0 GB0518603D0 (en) 2005-10-19
GB2417647A GB2417647A (en) 2006-03-01
GB2417647B true GB2417647B (en) 2006-08-30

Family

ID=35729074

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0518606A Expired - Fee Related GB2417648B (en) 2002-01-18 2003-01-20 Combining signals exhibiting multiple types of diversity
GB0518603A Expired - Fee Related GB2417647B (en) 2002-01-18 2003-01-20 Combining signals exhibiting multiple types of diversity

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0518606A Expired - Fee Related GB2417648B (en) 2002-01-18 2003-01-20 Combining signals exhibiting multiple types of diversity

Country Status (1)

Country Link
GB (2) GB2417648B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2452736A (en) * 2007-09-12 2009-03-18 Mitsubishi Electric Inf Tech Determining time shift between signals

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430481A2 (en) * 1989-11-13 1991-06-05 Motorola, Inc. Method and apparatus for diversity reception of time-dispersed signals

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0430481A2 (en) * 1989-11-13 1991-06-05 Motorola, Inc. Method and apparatus for diversity reception of time-dispersed signals

Also Published As

Publication number Publication date
GB2417648B (en) 2006-08-30
GB2417648A (en) 2006-03-01
GB0518606D0 (en) 2005-10-19
GB2417647A (en) 2006-03-01
GB0518603D0 (en) 2005-10-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070120