TY - GEN
T1 - Distributed Kalman filtering based on quantized innovations
AU - Msechu, Eric J.
AU - Ribeiro, Alejandro
AU - Roumeliotis, Stergios I.
AU - Giannakis, Georgios B.
PY - 2008
Y1 - 2008
N2 - We consider state estimation of a Markov stochastic process using an ad hoc wireless sensor network (WSN) based on noisy linear observations. Due to power and bandwidth constraints present in resource-limited WSNs, the observations are quantized before transmission. We derive a distributed recursive mean-square error (MSE) optimal quantizer-estimator based on the quantized observations. The resultant Kalman-like algorithm based on quantized observations exhibits MSE performance and computational complexity comparable to the Kalman filter based on un-quantized observations even for 2-3 bits of quantization per observation.
AB - We consider state estimation of a Markov stochastic process using an ad hoc wireless sensor network (WSN) based on noisy linear observations. Due to power and bandwidth constraints present in resource-limited WSNs, the observations are quantized before transmission. We derive a distributed recursive mean-square error (MSE) optimal quantizer-estimator based on the quantized observations. The resultant Kalman-like algorithm based on quantized observations exhibits MSE performance and computational complexity comparable to the Kalman filter based on un-quantized observations even for 2-3 bits of quantization per observation.
KW - Distributed state estimation
KW - Kalman filtering
KW - Limited-rate communication
KW - Target tracking
KW - Wireless sensor networks
UR - http://www.scopus.com/inward/record.url?scp=51449093615&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51449093615&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2008.4518354
DO - 10.1109/ICASSP.2008.4518354
M3 - Conference contribution
AN - SCOPUS:51449093615
SN - 1424414849
SN - 9781424414840
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 3293
EP - 3296
BT - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
T2 - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
Y2 - 31 March 2008 through 4 April 2008
ER -