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Comparison between the baseline and RIS-assisted models when λ RIS λ BS . Squares indicate RISs. In RIS-assisted model, each RIS has its own coverage area since the UE communicates with the nearest RIS.

Comparison between the baseline and RIS-assisted models when λ RIS λ BS . Squares indicate RISs. In RIS-assisted model, each RIS has its own coverage area since the UE communicates with the nearest RIS.

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Fig. 1: Depiction of the baseline mmWave cellular network.
Fig. 2: Depiction of the RIS-Assisted Mm-Wave Cellular Network.
Fig. 3: Comparison between the baseline and RIS-assisted models when λ...
RIS-Assisted Coverage Enhancement in Millimeter-Wave Cellular Networks
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  • Jul 2020
The use of millimeter-wave (mmWave) bandwidth is one key enabler to achieve the high data rates in the fifth-generation (5G) cellular systems. However, mmWave signals suffer from significant path loss due to high directivity and sensitivity to blockages, limiting its adoption within small-scale deployments. To enhance the coverage of mmWave communi...
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Context 1
... the paper, we consider λ RIS λ BS , as shown in Fig. 3. Since RISs are passive, they are easier and cheaper to be implemented than the active BSs. Therefore, the expression in (9) approximately becomes equivalent to (7), ...
Context 2
... the paper, we consider λ RIS λ BS , as shown in Fig. 3. Since RISs are passive, they are easier and cheaper to be implemented than the active BSs. Therefore, the expression in (9) approximately becomes equivalent to (7), ...

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