TY - GEN
T1 - Sparse Dictionary Learning and Per-source Filtering for Blind Radio Source Separation
AU - Dong, Annan
AU - Simeone, Osvaldo
AU - Haimovich, Alexander
AU - Dabin, Jason
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/4/16
Y1 - 2019/4/16
N2 - Radio frequency sources are observed at a fusion center via sensor measurements made over slow unknown flat-fading channels. The number of sources may be larger than the number of sensors, but their activity is sparse and intermittent with bursty transmission patterns accounted by hidden Markov models. The problem of blind source estimation in the absence of channel state information is tackled via a novel algorithm, consisting of a dictionary learning (DL) stage and a per-source stochastic filtering (PSF) stage. To this end, smooth LASSO is integrated with DL, while the forward-backward algorithm is leveraged for PSF. It is shown that the proposed algorithm can enhance the detection performance of the sources.
AB - Radio frequency sources are observed at a fusion center via sensor measurements made over slow unknown flat-fading channels. The number of sources may be larger than the number of sensors, but their activity is sparse and intermittent with bursty transmission patterns accounted by hidden Markov models. The problem of blind source estimation in the absence of channel state information is tackled via a novel algorithm, consisting of a dictionary learning (DL) stage and a per-source stochastic filtering (PSF) stage. To this end, smooth LASSO is integrated with DL, while the forward-backward algorithm is leveraged for PSF. It is shown that the proposed algorithm can enhance the detection performance of the sources.
KW - Blind source separation
KW - Dictionary learning
KW - Intermittent and sparse sources
KW - Wireless networks
UR - http://www.scopus.com/inward/record.url?scp=85065194409&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065194409&partnerID=8YFLogxK
U2 - 10.1109/CISS.2019.8693055
DO - 10.1109/CISS.2019.8693055
M3 - Conference contribution
AN - SCOPUS:85065194409
T3 - 2019 53rd Annual Conference on Information Sciences and Systems, CISS 2019
BT - 2019 53rd Annual Conference on Information Sciences and Systems, CISS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 53rd Annual Conference on Information Sciences and Systems, CISS 2019
Y2 - 20 March 2019 through 22 March 2019
ER -