On the Design and Optimisation of an RF Frontend for a Multi-RAT Optical Access Testbed
; Lorences-Riesgo, A.
Guiomar, F. P.
On the Design and Optimisation of an RF Frontend for a Multi-RAT Optical Access Testbed, Proc Conference on Telecommunications - ConfTele, Lisbon, Portugal, Vol. , pp. - , June, 2019.
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In this paper, we designed a radio-frequency (RF) frontend based on commercially available integrated circuits to provide a 4G-LTE-based communication system over band 7. It is intended that this RF frontend will integrate an open testbed for multi-radio access technologies development.
A cascade of amplifiers is designed and optimised for both uplink and downlink directions using their S-parameter models. Experimental tests demonstrate that this RF frontend has high power gain while it maintains the error vector magnitude of the 4G-LTE signal under the standardized limits for 64QAM modulation over 20 MHz bandwidth.