Elements of information theory
Elements of information theory
Wake on wireless: an event driven energy saving strategy for battery operated devices
Proceedings of the 8th annual international conference on Mobile computing and networking
Pattern Classification (2nd Edition)
Pattern Classification (2nd Edition)
ICCGI '07 Proceedings of the International Multi-Conference on Computing in the Global Information Technology
Proceedings of the 4th workshop on Embedded networked sensors
A framework for the automated generation of power-efficient classifiers for embedded sensor nodes
Proceedings of the 5th international conference on Embedded networked sensor systems
Activity sensing in the wild: a field trial of ubifit garden
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Proceedings of the 6th international conference on Mobile systems, applications, and services
Proceedings of the ICST 2nd international conference on Body area networks
CareNet: an integrated wireless sensor networking environment for remote healthcare
BodyNets '08 Proceedings of the ICST 3rd international conference on Body area networks
Body posture identification using hidden Markov model with a wearable sensor network
BodyNets '08 Proceedings of the ICST 3rd international conference on Body area networks
A framework of energy efficient mobile sensing for automatic user state recognition
Proceedings of the 7th international conference on Mobile systems, applications, and services
On the convergence of the inverses of Toeplitz matrices and its applications
IEEE Transactions on Information Theory
Optimal Allocation of Time-Resources for Multihypothesis Activity-Level Detection
DCOSS '09 Proceedings of the 5th IEEE International Conference on Distributed Computing in Sensor Systems
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The optimal allocation of measurements for activity-level detection in a wireless body area network (WBAN) for health-monitoring applications is considered. The WBAN with heterogeneous sensors is deployed in a simple star topology with the fusion center receiving a fixed number of measurements from the sensors; the number of measurements allocated to each sensor is optimized to minimize the probability of detection error at the fusion center. An analysis of the two-sensor case with binary hypotheses is presented. Since the number of measurements is an integer, an exhaustive search (grid search) is traditionally employed to determine the optimal allocation of measurements. However, such a search is computationally expensive. To this end, an alternate continuous-valued vector optimization is derived which yields approximately optimal allocations which can be found with lower complexity. Numerical case studies based on experimental data for different key activity-states are presented. It is observed that the Kullback-Leibler (KL) distances between the distributions associated with the hypotheses dominate the optimal allocation of measurements.