Improved rate-compatible low-density parity-check codes with applications to wireless channels

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dc.contributor.authorShaikh Faisal Zaheer
dc.date2006
dc.date.accessioned2022-05-18T07:07:42Z
dc.date.available2022-05-18T07:07:42Z
dc.degree.departmentCollege of Engineering Sciences and Applied Engineering
dc.degree.grantorKing Fahad for Petrolem University
dc.description.abstractآﻔﺎء ة رﻣﻮز اﻟﻨﺴﺒﺔ اﻟﻤﺘﻮاﻓﻘﺔ ﻣﻬﻤﺔ ﻟﻠﺤﺼﻮل ﻋﻠﻰ ﻃﺎﻗﺔ اﻧﺘﺎﺟﻴ]ﺔ ﻋﺎﻟﻴ]ﺔ ﻓ]ﻲ اﻷﻧﻈﻤ]ﺔ اﻟﻬﺠﻴﻨ]ﺔ ذات اﻟﻄﻠ]ﺐ اﻟﻤﻌ]ﺎد اﻻﻟ]ﻲ ﺑ ﺘﺼﺤﻴﺢ اﻟﺨﻄﺄ اﻟﺘﻘﺎدﻣﻲ اﻟﻤﺴﺘﺨﺪﻣﺔ ﻓﻲ اﻟﺸﺒﻜﺎت اﻟﺘ]ﻲ ﺗﺒ]ﺚ اﻟﻤﻌﻄﻴ]ﺎت ﺑﻄﺮﻳ ﻘ] .( ARQ/FEC) ﺔ ﺣﺰﻣﻴ]ﺔ ه]ﺬﻩ اﻟﺮﺳ]ﺎﻟﺔ ﺗﺮآﺰ ﻋﻠﻰ ﺑﻨﺎء ذ رﻣﻮز ﻣﺮاﻗﺒﺔ ﻣﺘﻜﺎﻓﺌﺔ ﻓﻌﺎﻟﺔ ا ﻣﻨﺨﻔ ت آﺜﺎﻓﺔ ﻀﺔ .( RC-LDPC) ﻋﻠﻰ ﻣﺪى ﻧﺴﺒﻲ ﻋﺮﻳﺾ : و LDPC ﺳﻴﺘﻢ اﻟﻨﻈﺮ ﻓﻲ اﺳﺘﺨﺪام ﻓﺌﺘﺎن ﻣﻦ ﻓﺌﺎت ﺷﻔﺮة ال هﺎﺗﺎن اﻟﻔﺌﺘﺎن هﻤﺎ:اوﻻ" , LDPC ﻓﺌ]ﺔ ﺷ]ﻔﺮة ال اﻟﻌﺎدﻳ]ﺔ و اﻟﺘﻲ ﺗﺘﻤﻴﺰ ﺑﺎﻻداء اﻟﺠﻴﺪ و ﻣﻌﺪل ﺣﻄﺄ ﻣﻨﺨﻔﺾ ,ﺛﺎﻧﻴﺎ" , LDPC ﻓﺌﺔ ال اﻟﻨﺼﻒ ﻋﺸﻮاﺋﻴﺔ و اﻟﺘﻲ ﺗﻘ]ﺪم اداءا " ﻣﻤ]ﺎﺛﻼ " LDPC ﻟﻔﺌﺔ ﺷﻔﺮة ال اﻟﻌﺎدﻳﺔ و اﻟﺘﻲ ﺗﻤﻜﻦ ﻣﻦ اﻟﺤﺼﻮل ﻋﻠﻰ ﻓﻚ ﺗﺸﻔﻴﺮ ﻣﻨﺨﻔﺾ اﻟﺘﻌﻘﻴ]ﺪ. RC- ﺳ]ﻴﺘﻢ ﺑﻨ]ﺎء ﻧﻈ]ﻢ ﺗﺸ]ﻔﻴﺮ LDPC .ARQ/FEC ﻓﻌﺎﻟﺔ و ﺳﻴﺘﻢ ﺗﻘﻴﻴﻤﻬﺎ ﻋﻠﻰ اﻧﻈﻤﺔ ال ARQ/FEC ﺑﺎﻟﻤﻘﺎرﻧﺔ ﻣﻊ اﻧﻈﻤ]ﺔ ال اﻟﻤﻌﻤ]ﻮل ﺑﻬ]ﺎ ﺣﺎﻟﻴ]ﺎ " , و ARQ/FEC وﺟ]ﺪ ان ﻧﻈ]ﺎم ال اﻟﻤ]ﺰود ﺑﻔﺌ]ﺔ ﺷ]ﻔﺮة ال LDPC اﻟﻨﺼ]]ﻒ ﻋﺸ]]ﻮاﺋﻲ ﻳﺘﻤﻴ]]ﺰ ﺑﻜﻮﻧ]]ﻪ ﻣ]]ﻨﺨﻔﺾ اﻟﺘﻌﻘﻴ]]ﺪ ﻓ]]ﻲ ﻓ]]ﻚ اﻟﺘﺸ]]ﻔﻴﺮ وﺗ اﻻ ﻜ]]ﻮن ﻃﺎﻗﺘ]]ﻪ ﻧﺘﺎﺟﻴ]]ﺔ ﻣﺮﺗﻔﻌ]]ﺔ ﻋﻠ]]ﻰ ﻗ]]ﻴﻢ ﻋﺎﻟﻴ SNR ﺔ اﻟﻘﻴﻤﺔ . ﺳﻴﺘﻢ اﻟﺒﺤﺚ ﻓﻲ اﺳﺘﺨﺪام ﺷﻴﻔﺮات ﻧﺼﻒ ﻋﺸﻮاﺋﻴﺔ ﻣﺘﻮاﻓﻘﺔ اﻟﻨﺴ]ﺒﺔ ﻓ]ﻲ اﻧﻈﻤ]ﺔ ﺗﻌﺘﻤ]ﺪ ﺗﻨﻮﻳ]ﻊ اﻟﺘﻌ]ﺎون اﻟﻤﺸ]ﻔﺮ و اﺧﻴ]ﺮا " , ﺳﻨ ﻘﻮم ﺑﺒﻨﺎء ﺧﻮارزﻣﻴﺔ ﻻزاﻟﺔ اﻟﺪواﺋﺮ اﻟﺼﻐﻴﺮة ﻣﻦ ﻓﺌﺔ ﺗﺸﻔﻴﺮ LDPC ال اﻟﻨﺼﻒ ﻋﺸﻮاﺋﻴﺔ. آﻠﻤـ داﻟ ﺎت ـﺔ : ﻧﺴﺒﺔ ﻣﺘﻮاﻓﻘﺔ , ,(LDPC) ﺷﻴﻔﺮة اﻟﺘﻔﻘﺪ اﻟﻤﺘﻜﺎﻓﺊ اﻟﻤﻨﺨﻔﺾ اﻟﻜﺜﺎﻓﺔ (ARQ) اﻟﻄﻠﺐ
dc.identifier.other4621
dc.identifier.urihttps://drepo.sdl.edu.sa/handle/20.500.14154/2561
dc.language.isoen
dc.publisherSaudi Digital Library
dc.thesis.levelMaster
dc.thesis.sourceKing Fahad for Petrolem University
dc.titleImproved rate-compatible low-density parity-check codes with applications to wireless channels
dc.typeThesis
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