Application of compressive sensing to sparse channel estimation

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Compressed Sensing for Wireless Communications: Useful Tips and Tricks (2015, background): “paths, the channel can be readily modeled as a sparse vector [23].”
Channel estimation for OFDM systems (2017, background): “The improvement in the performance of sparse tap-based channel estimation which results from using finer, over-complete dictionaries comes at increased computational complexity, and further studies revealed a strongly diminishing return for finer dictionaries [7].”
Compressive Sensing in Electromagnetics - A Review (2015, background): “, imaging [3, 4], audio/video capture [5], and communications [6]) has been strongly motivated.”
Distributed Compressive CSIT Estimation and Feedback for FDD Multi-User Massive MIMO Systems (2014, background): “There is one important observation for massive MIMO systems, which can help to address the above issues.”
Recent Advances in Cloud Radio Access Networks: System Architectures, Key Techniques, and Open Issues (2016, methodology): “The sparsity patterns in signa l processing have been exploited for a high efficient system design [62].”