On the performance of FBMC-PAM systems with CFO in frequency-selective channels

This paper is focused on the analysis of the impact of carrier-frequency offset (CFO) on the performance of filter bank multicarrier systems with pulse amplitude modulation (FBMC-PAM). FBMC-PAM has been introduced since FBMC systems based on offset QAM modulation (FBMC/OQAM) achieve limited performance when a short prototype filter is adopted to reduce system latency and complexity. Unlike previous studies based on the signal-to-interference ratio, an analytical asymptotic expression of the symbol-error rate in the presence of CFO is derived. The simulation results have shown that the performance evaluated through the proposed method is sufficiently close to that obtained by computer simulations, especially for moderate values of the signal-to-noise ratio.