{"product_id":"massiwnye-sistemy-mimo-von-m-yagadeesh-chandra-prasad","title":"Massiwnye sistemy MIMO","description":"\u003cp\u003eSwqz' chetwertogo pokoleniq (4G) i pqtogo pokoleniq (5G), osnowannaq na tehnologii dolgosrochnoj ocenki (LTE), trebuet bolee wysokih skorostej peredachi dannyh dlq udowletworeniq potrebnostej pol'zowatel'skogo oborudowaniq. Odnako tradicionnye sistemy s mnozhestwennym whodom i mnozhestwennym wyhodom (MIMO) ne sposobny obespechit' maximal'nuü propusknuü sposobnost' i skorost' peredachi dannyh dlq konechnyh pol'zowatelej, chto qwlqetsq slozhnoj zadachej. Krome togo, uwelichenie skorosti peredachi dannyh priwodit k uwelicheniü änergopotrebleniq, chto snizhaet äffektiwnost' ispol'zowaniq spektra i änergopotrebleniq. Iznachal'no dannaq issledowatel'skaq rabota poswqschena realizacii metoda ocenki kanala s dwojnym selektirowaniem (Expectation Maximization based Doubly Selective, EMDS) dlq MIMO-sistem. Zdes' shema EMDS razdelqet kanal na wektor ozhidaniq i wektor maximizacii na osnowe razneseniq antenn. Dalee dlq sohraneniq sinhronizacii w priemnike wypolnqetsq analiz dwojnogo kanala na osnowe wremennoj wyborki i chastotnoj polosy. Propusknaq sposobnost', srednekwadratichnaq oshibka (MSE), koäfficient bitowyh oshibok (BER) izmereny dlq sistem MIMO 4x4, 8x8 i 16x16 s ispol'zowaniem ocenki kanala EMDS. Pri ätom predlozhennaq MIMO-sistema mozhet byt' ispol'zowana dlq swqzi 4G.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9786206251736\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9786206251736","offer_id":46906361446725,"sku":"9786206251736","price":28.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/6a0b485f-3e27-4609-9a25-7412d336ce34.jpg?v=1758955074","url":"https:\/\/shop.autorenwelt.de\/en\/products\/massiwnye-sistemy-mimo-von-m-yagadeesh-chandra-prasad","provider":"Autorenwelt Shop","version":"1.0","type":"link"}