FDD LTE MIMO closed-loop vs open-loop performance evaluation in commercial network


With a growing network traffic Mobile Network Operators (MNO) looking for ways to increase network capacity and improve customer experience. One of the ways is to find the best parameters from the set defined by 3GPP. In the study, closed-loop MIMO was compared to open-loop MIMO on the LTE FDD network. Network performance was evaluated in 3 different scenarios: slow and fast-moving UE under different SINR levels and large scale on 2T2R and 4T4R cells. The result shows gains of using closed-loop and it is recommended to use it commercial LTE networks.

Article in English.

LTE MIMO atvirojo ir uždarojo MIMO ciklo palyginimas komerciniame tinkle


Didėjant mobiliojo ryšio tinkle perduodamam duomenų srautui, mobiliojo ryšio operatoriai (MNO) ieško būdų, kaip padidinti tinklo pajėgumą ir pagerinti klientų patirtį. Vienas iš būdų yra rasti geriausius parametrus iš 3GPP apibrėžto rinkinio. Tyrimo metu uždarojo ciklo MIMO buvo lyginamas su atvirojo ciklo MIMO LTE FDD tinkle. Tinklo našumas buvo vertinamas pagal 3 skirtingus scenarijus: lėtai ir greitai judantis klientas. Taip pat palyginta pagal skirtingą signalo ir triukšmo santykio vertę. Taip pat atliktas masinis palyginimas 2T2R ir 4T4R tipo ląstelėse. Rezultatas rodo uždarojo ciklo naudojimo pranašumus. Todėl uždarojo ciklo MIMO rekomenduojama naudoti komerciniuose LTE tinkluose.

Reikšminiai žodžiai: atvirojo ir uždarojo ciklo MIMO, LTE tinklo talpa, mobiliojo ryšio kokybė.

Keyword : closed-loop MIMO, LTE FDD, mobile network capacity

How to Cite
Chmieliauskas, D. (2021). FDD LTE MIMO closed-loop vs open-loop performance evaluation in commercial network. Mokslas – Lietuvos Ateitis / Science – Future of Lithuania, 13.
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Aug 19, 2021
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