NO20084086L - OFDMA basert pa kognitiv radio - Google Patents

OFDMA basert pa kognitiv radio

Info

Publication number
NO20084086L
NO20084086L NO20084086A NO20084086A NO20084086L NO 20084086 L NO20084086 L NO 20084086L NO 20084086 A NO20084086 A NO 20084086A NO 20084086 A NO20084086 A NO 20084086A NO 20084086 L NO20084086 L NO 20084086L
Authority
NO
Norway
Prior art keywords
subchannels
channels
transmitter
users
sub
Prior art date
Application number
NO20084086A
Other languages
English (en)
Other versions
NO341749B1 (no
Inventor
Amer A Hassan
Christian Huitema
Original Assignee
Microsoft 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 Microsoft Corp filed Critical Microsoft Corp
Publication of NO20084086L publication Critical patent/NO20084086L/no
Publication of NO341749B1 publication Critical patent/NO341749B1/no

Links

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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
    • H04H60/49—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations
    • H04H60/52—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying locations of users
    • 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
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • 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
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Et flerbrukerskjema som lar et antall brukere, sett av brukere eller bærere dele én eller flere kanaler er tilveiebragt. I oppfinnelsen blir den tilgjengelige kanalbåndbredden delt inn i et antall underkanaler med lik båndbredde i henhold til standard praksis i OFDM. Senderen blir informert av en applikasjon om at den trenger å sende data med en gitt hastighet. Senderen bestemmer det minste antallet underkanaler og den maksimale energiterskelen (eller støyterskelen) for hver underkanal nødvendig for å oppnå denne datahastigheten, og velger et sett av underkanaler som oppfyller disse kravene. Underkanalene trenger ikke ligge ved siden av hverandre i spekteret eller høre til samme kanal. Når senderen har valgt det nødvendige antall underkanaler, begynner den å sende samtidig på disse underkanalene over hele båndbredden som anvendes av disse underkanalene.
NO20084086A 2006-04-25 2008-09-25 OFDMA basert på kognitiv radio NO341749B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/410,969 US7933344B2 (en) 2006-04-25 2006-04-25 OFDMA based on cognitive radio
PCT/US2007/010020 WO2007127250A2 (en) 2006-04-25 2007-04-25 Ofdma based on cognitive radio

Publications (2)

Publication Number Publication Date
NO20084086L true NO20084086L (no) 2008-10-14
NO341749B1 NO341749B1 (no) 2018-01-15

Family

ID=38619485

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20084086A NO341749B1 (no) 2006-04-25 2008-09-25 OFDMA basert på kognitiv radio

Country Status (15)

Country Link
US (1) US7933344B2 (no)
EP (1) EP2011296B1 (no)
JP (1) JP5053365B2 (no)
KR (1) KR101366448B1 (no)
CN (1) CN101433046B (no)
AU (1) AU2007243348B2 (no)
BR (1) BRPI0710700A2 (no)
CA (1) CA2646967C (no)
IL (1) IL194289A (no)
MX (1) MX2008013648A (no)
NO (1) NO341749B1 (no)
RU (1) RU2446603C2 (no)
TW (1) TWI427953B (no)
WO (1) WO2007127250A2 (no)
ZA (1) ZA200808239B (no)

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RU2008142379A (ru) 2010-04-27
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US7933344B2 (en) 2011-04-26
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CN101433046B (zh) 2012-01-18
RU2446603C2 (ru) 2012-03-27
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