Compressive Sensing system for recording of ECoG signals in-vivo

Figure 6.2.2.1. Mixer and ideal active inverting integrator circuitry.The integration operation is shown in Eq.18:(18)In this way, the final integration value has to be multiplied by a scale which depends once againon RC and the integration time Δt, in this case in inverting configuration (see Eq. 16). On theother hand, the final integration value depends as well on the gain on the ideal amplifier hasbeen used, which is included in Fig.6.2.2.2. In order to evaluate which is the gain furnished bythis configuration by considering that the system works within integration frequency range, anaveraged gain has been calculated by comparing the Matlab output achieved and the Cadenceoutput has been obtained for each of the cases based on an amplifier. The other simulationparameters have been included in Table 6.2.1.1.Figure 6.2.2.2. Ideal amplifier.A complete multipath acquisition array has been implemented in Cadence by considering N =128 and M = 64. The resulting compressed signal has been compared in Fig.6.2.2.3 with theones presented in 6.2.1.59