{"product_id":"sistema-sdm-s-zhadnym-determinirovannym-pilotom-na-kanale-nakagami-von-mamta-arora-und-rosy-dhiman","title":"SISTEMA SDM S ZhADNYM DETERMINIROVANNYM PILOTOM NA KANALE NAKAGAMI","description":"\u003cp\u003eOrtogonal'noe mul'tiplexirowanie s chastotnym razdeleniem (OFDM) obespechiwaet äffektiwnoe i neslozhnoe sredstwo ustraneniq mezhsimwol'noj interferencii (ISI) dlq peredachi po chastotno-selektiwnym kanalam. V sisteme OFDM modulqciq mozhet byt' kogerentnoj ili differencial'noj. Dlq ocenki kanala ispol'zuetsq pilot, kotoryj oceniwaet swojstwo kanala. My issleduem algoritm Greedy i nahodim ego dejstwie pri ispol'zowanii kanala s zatuhaniem Nakagami. V dannoj rabote osnownoj zadachej qwlqetsq minimizaciq znacheniq kogerentnosti s pomosch'ü zhadnyh algoritmow. Takim obrazom, umen'shaetsq urowen' signala, uwelichiwaetsq wremq wychislenij, moschnost' takzhe umen'shaetsq i uwelichiwaetsq znachenie kogerentnosti. Proizwoditel'nost' sistemy uhudshaetsq, kogda ispol'zuetsq wysokaq slozhnost'. V predlagaemoj rabote minimal'noe znachenie kogerentnosti umen'shaetsq pri umen'shenii slozhnosti, znachenie kogerentnosti takzhe umen'shaetsq, a äffektiwnost' uwelichiwaetsq. Nahozhdenie znacheniq kogerentnosti s pomosch'ü optimizirowannogo pilotnogo shablona oznachaet, chto luchshij pilot optimiziruet dannye w perwuü ochered'. Kanal Nakagami ispol'zuetsq w zhadnom algoritme dlq optimizacii luchshego resheniq, a kanal Nakagami s zatuhaniem ispol'zuetsq dlq wyrawniwaniq signala w terminah shuma, chto oznachaet, chto oni udalqüt nezhelatel'nyj shum.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9786204224152\"\u003e\u003ch3\u003eANALIZ BER\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9786204224152","offer_id":39509138374749,"sku":"9786204224152","price":19.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/bd3473d1-ba77-4c45-9e50-7154e6c108c1.jpg?v=1757658439","url":"https:\/\/shop.autorenwelt.de\/products\/sistema-sdm-s-zhadnym-determinirovannym-pilotom-na-kanale-nakagami-von-mamta-arora-und-rosy-dhiman","provider":"Autorenwelt Shop","version":"1.0","type":"link"}