Censored distributed space-time coding for wireless sensor networks
EURASIP Journal on Advances in Signal Processing
Channel aware target localization with quantized data in wireless sensor networks
IEEE Transactions on Signal Processing
Tracking in wireless sensor networks using particle filtering: physical layer considerations
IEEE Transactions on Signal Processing
Detection outage and detection diversity in a homogeneous distributed sensor network
IEEE Transactions on Signal Processing
Multiple-symbol differential decision fusion for mobile wireless sensor networks
IEEE Transactions on Wireless Communications
Decision fusion rules over Rician fading channel for wireless sensor networks
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Channel-aware decision fusion with unknown local sensor detection probability
IEEE Transactions on Signal Processing
Multiple-symbol differential decision fusion for mobile wireless sensor networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Estimation over fading channels with limited feedback using distributed sensing
IEEE Transactions on Signal Processing
Coherent max-log decision fusion in wireless sensor networks
IEEE Transactions on Communications
On learning for fusion over fading channels in wireless sensor networks
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
Reliable data fusion in wireless sensor networks: a dynamic Bayesian game approach
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Power control strategy for distributed multiple-hypothesis detection
IEEE Transactions on Signal Processing
Blind Adaptive Weighted Aggregation Scheme for Event Detection in Multihop Wireless Sensor Networks
Wireless Personal Communications: An International Journal
Performance limits of cooperative energy detection in fading environments
Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
The decision fusion in the wireless network with possible transmission errors
Information Sciences: an International Journal
Fusion-based volcanic earthquake detection and timing in wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
Performance analysis of different types of sensor networks for cognitive radios
Journal of Electrical and Computer Engineering
Information Sciences: an International Journal
| Hi-index | 35.71 |
In this paper, we revisit the problem of fusing decisions transmitted over fading channels in a wireless sensor network. Previous development relies on instantaneous channel state information (CSI). However, acquiring channel information may be too costly for resource constrained sensor networks. In this paper, we propose a new likelihood ratio (LR)-based fusion rule which requires only the knowledge of channel statistics instead of instantaneous CSI. Based on the assumption that all the sensors have the same detection performance and the same channel signal-to-noise ratio (SNR), we show that when the channel SNR is low, this fusion rule reduces to a statistic in the form of an equal gain combiner (EGC), which explains why EGC is a very good choice with low or medium SNR; at high-channel SNR, it is equivalent to the Chair-Varshney fusion rule. Performance evaluation shows that the new fusion rule exhibits only slight performance degradation compared with the optimal LR-based fusion rule using instantaneous CSI.