27 September 2011 Joint sparsity models for wideband array processing
Author Affiliations +
Proceedings Volume 8138, Wavelets and Sparsity XIV; 81380K (2011); doi: 10.1117/12.893870
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States
Recent work has demonstrated the power of sparse models and representations in signal processing applications and has provided the community with computational tools to use it. In this paper we explore the use of sparsity in localization and beamforming when capturing multiple broadband sources using a sensor array. Specifically, we reformulate the wideband signal acquisition as a joint/group sparsity problem in a combined frequency-space domain. Under this formulation the signal is sparse in the spatial domain but has common support in all frequencies. Using techniques from the model-based compressive sensing literature we demonstrate that it is possible to robustly capture, localize and often reconstruct multiple signals present in the scene.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Petros T. Boufounos, Paris Smaragdis, Bhiksha Raj, "Joint sparsity models for wideband array processing", Proc. SPIE 8138, Wavelets and Sparsity XIV, 81380K (27 September 2011); doi: 10.1117/12.893870; https://doi.org/10.1117/12.893870


Array processing

Compressed sensing

Signal processing

Reconstruction algorithms

Model-based design

Evolutionary algorithms

Back to Top