DOI: https://doi.org/10.3103/S0735272720020028
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Controlled OTA measurement and test environment (scenario-1)

Study of indoor radio coverage performance of dual technology co-existing MIMO antenna platform for low power wireless base station

Saroj K. Patro, Rabindra Kishore Mishra, Ajit Kumar Panda

Abstract


 

In this paper, we present the radiated mode indoor radio coverage performance study of a co-existing dual technology, dual 4×4 Multiple Input Multiple Output (MIMO) antenna platform. The antenna platform is targeted to be used for low power wireless radio Base Station (BS) applications. One of the 4×4 MIMO antenna pairs operates in the 2.5–2.7 GHz licensed Long Term Evolution (LTE) band while the other MIMO antenna pair operates in the 2.4 GHz unlicensed Wireless Fidelity (Wi-Fi) Industrial Scientific Medical (ISM) band. This radio performance study is carried out to analyze, predict and verify the impact of multi-radio co-existence on the radiated mode indoor coverage performance in an Over-The-Air (OTA) scenario. The study involves OTA radio propagation modeling, prediction and verification both for a near field and far field scenario. While the near field coverage is studied in a small form factor controlled shield box environment, the far field coverage study is undertaken over a 780 ft2 indoor enterprise coverage area. The test result shows the worst case LTE signal level is –77.7, –75, and –76.03 dBm, respectively, over a 3.6 m obstructed radial Line Of Sight (LOS) distance.

Keywords


LTE; MIMO; OTA; RSSI; Wi-Fi; antenna; co-existence; coverage; propagation

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References


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