TY - GEN
T1 - Density-Based Multiple Access for Detection in Wireless Sensor Networks
AU - Cohen, Kobi
AU - Leshem, Amir
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/8/15
Y1 - 2018/8/15
N2 - We consider a binary hypothesis testing problem using Wireless Sensor Networks (WSNs). The decision is made by a fusion center and is based on received data from the sensors. We focus on an energy and spectrum efficient transmission scheme used to reduce the energy consumption and spectrum usage during the detection task. We propose a Density-Based Multiple Access (DBMA) transmission protocol that performs a censoring-type transmission based on the density of observations using multiple access channels (MAC). Specifically, in DBMA, only sensors with highly informative observations transmit their data in each data collection. The sensors transmit a common shaping waveform and the fusion center receives a superposition of the analog transmitted signals. DBMA has important advantages for detection tasks in WSNs. First, it is highly energy and bandwidth efficient due to transmissions saving and narrowband transmission over MAC. Second, it can be implemented by simple and dumb sensors (oblivious of observation statistics, and local data processing is not required) which simplifies the implementation as compared to existing MAC transmission schemes for detection in WSNs. We establish both finite sample analysis and asymptotic analysis of the error probability with respect to the network size and provide conditions for obtaining exponential decay of the error. Numerical examples are provided to demonstrate the DBMA performance.
AB - We consider a binary hypothesis testing problem using Wireless Sensor Networks (WSNs). The decision is made by a fusion center and is based on received data from the sensors. We focus on an energy and spectrum efficient transmission scheme used to reduce the energy consumption and spectrum usage during the detection task. We propose a Density-Based Multiple Access (DBMA) transmission protocol that performs a censoring-type transmission based on the density of observations using multiple access channels (MAC). Specifically, in DBMA, only sensors with highly informative observations transmit their data in each data collection. The sensors transmit a common shaping waveform and the fusion center receives a superposition of the analog transmitted signals. DBMA has important advantages for detection tasks in WSNs. First, it is highly energy and bandwidth efficient due to transmissions saving and narrowband transmission over MAC. Second, it can be implemented by simple and dumb sensors (oblivious of observation statistics, and local data processing is not required) which simplifies the implementation as compared to existing MAC transmission schemes for detection in WSNs. We establish both finite sample analysis and asymptotic analysis of the error probability with respect to the network size and provide conditions for obtaining exponential decay of the error. Numerical examples are provided to demonstrate the DBMA performance.
UR - http://www.scopus.com/inward/record.url?scp=85052482635&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2018.8437480
DO - 10.1109/ISIT.2018.8437480
M3 - Conference contribution
AN - SCOPUS:85052482635
SN - 9781538647806
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 776
EP - 780
BT - 2018 IEEE International Symposium on Information Theory, ISIT 2018
PB - Institute of Electrical and Electronics Engineers
T2 - 2018 IEEE International Symposium on Information Theory, ISIT 2018
Y2 - 17 June 2018 through 22 June 2018
ER -