FPGA-based digital tunable wireless transceiver for the TETRA-TETRAPOL bands

Abstract

Wireless digital repeaters are used to amplify cellular signals in different scenarios and environments using several frequency bands and radio links. The market for such repeaters varies between the demand for a specific scenario and a specific frequency radio band. In this work we present a dynamic and all purpose FPGA based repeater implemented in an actual industrial product. We present the FPGA based digital repeater customised for usage in different scenarios, frequency bands and number of channels. The procedure from developing an emulator to acquire test data and potential processing modules through the FPGA based implementation and industrialisation is the core of this work. We show that the main advantage of our solution is reconfigurability not just in filter coefficients, number of channels and taps but also in adding new functional blocks and using different configurations thanks to the use of FPGAs.