Title :
Multidimensional Adaptive Power Management for Low-Power Operation of Wireless Devices
Author :
Senguttuvan, Rajarajan ; Sen, Shreyas ; Chatterjee, Abhijit
Author_Institution :
Dept. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA
Abstract :
Currently, wireless circuits are designed to meet minimum quality-of-service requirements under worst case wireless link conditions (interference, noise, multipath effects), leading to high power consumption when the channel is not worst case. In this work, we develop a multidimensional adaptive power management approach that optimally trades-off power versus performance across temporally changing operating conditions by concurrently tuning control parameters in the RF and digital baseband components of the wireless receiver. Simulation and hardware results indicate significant power savings in the receiver using the proposed approach while maintaining the system bit error rate specification.
Keywords :
adaptive control; circuit feedback; energy management systems; error statistics; low-power electronics; quality of service; receivers; wireless LAN; RF baseband components; control parameter tuning; digital baseband components; low-power operation; multidimensional adaptive power management; quality-of-service requirements; system bit error rate specification; wireless circuits; wireless devices; wireless receiver; Adaptive control; energy management; feedback circuits; wireless LAN;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2008.924370