Title :
Distributed predictive subspace pursuit
Author :
Sundman, Dennis ; Zachariah, Dave ; Chatterjee, Saptarshi ; Skoglund, Mikael
Author_Institution :
Sch. of Electr. Eng., KTH - R. Inst. of Technol., Stockholm, Sweden
Abstract :
In a compressed sensing setup with jointly sparse, correlated data, we develop a distributed greedy algorithm called distributed predictive subspace pursuit. Based on estimates from neighboring sensor nodes, this algorithm operates iteratively in two steps: first forming a prediction of the signal and then solving the compressed sensing problem with an iterative linear minimum mean squared estimator. Through simulations we show that the algorithm provides better performance than current state-of-the-art algorithms.
Keywords :
compressed sensing; distributed algorithms; greedy algorithms; iterative methods; least mean squares methods; prediction theory; compressed sensing problem; correlated data; distributed greedy algorithm; distributed predictive subspace pursuit; iterative linear minimum mean squared estimator; jointly sparse data; sensor nodes; signal prediction; Compressed sensing; Conferences; Correlation; Prediction algorithms; Sensors; Sparse matrices; Vectors; compressed sensing; distributed compressed sensing; greedy algorithms; prediction methods;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2013 IEEE International Conference on
Conference_Location :
Vancouver, BC
DOI :
10.1109/ICASSP.2013.6638538