An adaptive low-power receiver architecture for IEEE 802.15.4 standard

As increase applicability of unplugged wireless systems, much effort to reduce power consumption in transceiver has been invested. Most of publications, however, target in RF front-end, ADCs and DACs, or in the digital baseband architecture individually. This paper proposes an adaptive system level architecture focus on ADC and digital receiver power safe. It uses a robust algorithm to digital receiver baseband, a Sigma-Delta ADC, and a feedback control block based on packet SNR measure. The system was designed targeting standard IEEE 802.15.4. Simulations show up to 13% of system power reduction and still meeting the standard requirements.