Abstract

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 …

Date

2010

Authors

Gautam Thatte, Viktor Rozgic, Ming Li, Sabyasachi Ghosh, Urbashi Mitra, Shri Narayanan, Murali Annavaram, Donna Spruijt-Metz

Book

Proceedings of the Fourth International Conference on Body Area Networks

Pages

1-8