Cooperative Spectrum Sensing for Cognitive Radio Power Trade-Offs

The patent applies partial action by performing spectrum sensing for only a fraction of the total available time rather than continuous sensing. The method divides the observation interval into multiple sensing slots, where sensing is performed in selected slots based on detection requirements, thereby reducing overall power consumption while maintaining adequate detection probability through selective sampling and cooperative sensing fusion.

The patent applies parameter changes by dynamically adjusting the baseband sampling rate according to the specific sensing requirements and channel conditions. Instead of using a fixed high sampling rate, the system adapts the sampling rate parameter to achieve the minimum required detection accuracy, thereby optimizing the trade-off between measurement precision and ADC power consumption.

The patent applies partial action by using lower ADC bit resolution (e.g., 1-bit or low-resolution quantization) combined with cooperative sensing from multiple users. Instead of relying on high-resolution individual ADCs, the system achieves adequate detection accuracy through the aggregation of multiple low-resolution measurements, thereby significantly reducing ADC power consumption while maintaining detection performance.