Compressive Digital Receiver: First Performance Measurements

In this work, sensitivity, instantaneous dynamic range and bandwidth measurement results of the Compressive Digital Receiver (CDR) implemented on a real hardware, will be reported for the first time. Developed CDR is a compressive sensing based sub-Nyquist sampling receiver which can monitor 2.25GHz bandwith instantaneously by using four ADC's each of which is sampling at 250MHz and has 14 bits resolution. It is observed that the sensitivity and dynamic range of the CDR changes with respect to frequency. For 2.25GHz bandwidth, the best and worst sensitivity values of the CDR are reported as -62dBm and -41dBm, respectively. Single-signal dynamic range of CDR is measured as at least 60dB for the whole band. The best and worst values of the two-signal dynamic rage values are observed as 45dB and 20dB, respectively.