Vector Spectrum Analyzer using USRP and Matlab applied to Wi-Fi Signals
Diego A. Amoedo, Mateus Oliveira Silva, Victor L.G. Calvacante, Gustavo M. Torres, Adriel V. Dos Santos, Edma V.C.U. Mattos, Antônio M.C. Pereira, Allan R.A. Da Silva, Agemilson P. Silva, Claudio H.A. Rodrigues, Rafael S. Do Nascimento, Lucas F. Reis, Luã S. Dupont, Ricardo G. Paula, Frederico S. Pinagé, Waldir S.S., Celso B. Carvalho · 2021
The acquisition of sophisticated vector signal analyzer (VSA) may be a limiting factor for the execution of R&D projects due to prohibitive cost for some applications. In this work, conducted by three partners (UFAM/CETELI, ICTS and ENVISION/TPV), we propose a signal reception framework that uses the 802.11n standard to display measures of interest in order to analyze Wi-Fi signals cost-effectively. As result, four possible measurements were obtained: (i) transmission spectrum mask; (ii) spectral flatness; (iii) transmitter constellation error; (iv) transmitter modulation accuracy (EVM). The results indicates that this approach is a feasible VSA solution for R&D projects with budget limitations.