Fig. 6
From: Purposeful co-design of OFDM signals for ranging and communications
Pareto trade-off curves plotting capacity (a) and probability of outage (b) against ranging RMSE for the equally-spaced-pilot signal at 0-dB SNR. Translation upward along each curve corresponds to increasing \(\alpha\), the fraction of power allocated to the data resources when pilots are present. The black dots correspond to values of \(\alpha\) that maximize the capacity. Curves are plotted for multiple pilot resource spacings across the subcarriers, \(\Delta p_{\text {sc}}\). The channel is order \(L=2\) Rayleigh, and channel coefficients are assumed known for ranging only