Emulación en FPGA de un sistema transceptor de RF basado en radio definida por software

Mario Salvador Aviña-Zuñiga; Miguel Angel Estudillo-Valdez; Gilberto Enrico Vazquez-Alcaraz; Andrés Calvillo-Téllez; Jose Cruz Nuñez-Perez

doi:10.29057/icbi.v10iEspecial4.9141

Mario Salvador Aviña-Zuñiga Instituto Tecnológico de Tijuana https://orcid.org/0000-0002-8813-3769
Miguel Angel Estudillo-Valdez Instituto Politécnico Nacional https://orcid.org/0000-0002-7856-1479
Gilberto Enrico Vazquez-Alcaraz Instituto Tecnológico de Tijuana https://orcid.org/0000-0001-8311-844X
Andrés Calvillo-Téllez Instituto Politécnico Nacional https://orcid.org/0000-0003-3721-5630
Jose Cruz Nuñez-Perez Instituto Politécnico Nacional https://orcid.org/0000-0002-8912-8822

DOI: https://doi.org/10.29057/icbi.v10iEspecial4.9141

Keywords: FPGA, RF, SDR, Transmission-reception, VHDL

Abstract

SDR Software Defined Radio uses digital techniques to replace traditional radio hardware such as mixers, modulators, demodulators, and related analog circuits, the result is a flexible radio that can be quickly reconfigured. In this article, a complete radio communication system, that is, the transmitter-receiver is developed and emulated using SDR. To achieve the above, the DSSS technique and the System Generator for DSP in Matlab-Simulink are used. The model is compiled and the VHDL code is obtained to emulate it on a Xilinx Artix-7 AC701 FPGA card. Finally, the encryption and decryption of digital data is performed using LFSR and BPSK. In addition, the comparison between the results obtained is made, between a DSSS transceiver using a standard LFSR against another DSSS using an extended LFSR. Finally, the design of a graphical interface in Matlab is presented, capable of modifying the parameters of the DSSS transceiver model to adapt it to different transmission frequencies.

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