Journal ArticleDOI
Efficient Measurement Generation and Pervasive Sparsity for Compressive Data Gathering
TLDR
This paper investigates how to generate RIP (restricted isometry property) preserving measurements of sensor readings by taking multi-hop communication cost into account and discovers that a simple form of measurement matrix has good RIP, and the data gathering scheme that realizes this measurement matrix can further reduce the communication cost of CDG for both chain-type and tree-type topology.Abstract:
We proposed compressive data gathering (CDG) that leverages compressive sampling (CS) principle to efficiently reduce communication cost and prolong network lifetime for large scale monitoring sensor networks The network capacity has been proven to increase proportionally to the sparsity of sensor readings In this paper, we further address two key problems in the CDG framework First, we investigate how to generate RIP (restricted isometry property) preserving measurements of sensor readings by taking multi-hop communication cost into account Excitingly, we discover that a simple form of measurement matrix [I R] has good RIP, and the data gathering scheme that realizes this measurement matrix can further reduce the communication cost of CDG for both chain-type and tree-type topology Second, although the sparsity of sensor readings is pervasive, it might be rather complicated to fully exploit it Owing to the inherent flexibility of CS principle, the proposed CDG framework is able to utilize various sparsity patterns despite of a simple and unified data gathering process In particular, we present approaches for adapting CS decoder to utilize cross-domain sparsity (eg temporal-frequency and spatial-frequency) We carry out simulation experiments over both synthesized and real sensor data The results confirm that CDG can preserve sensor data fidelity at a reduced communication costread more
Citations
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Journal ArticleDOI
Compressed Sensing Signal and Data Acquisition in Wireless Sensor Networks and Internet of Things
TL;DR: In this paper, a compressed sensing-based data sampling and data acquisition in wireless sensor networks and the Internet of Things (IoT) has been investigated, in which the end nodes measure, transmit, and store the sampled data in the framework.
Compressed Sensing Signal and Data Acquisition in Wireless Sensor Networks and Internet of Things (Extended) IEEE Industrial Electronics Technology News
TL;DR: This paper briefly introduces the CS theory with respect to the sampling and transmission coordination during the network lifetime through providing a compressed sampling process with low computation costs, and proposes a CS-based framework for IoT and an efficient cluster-sparse reconstruction algorithm for in-network compression.
Journal ArticleDOI
Energy-Efficient Sensing in Wireless Sensor Networks Using Compressed Sensing
TL;DR: It is shown that, for some applications, compressed sensing and distributed compressed sensing can provide greater energy efficiency than transform coding and model-based adaptive sensing in wireless sensor networks.
Journal ArticleDOI
An Efficient Maximum Likelihood Method for Direction-of-Arrival Estimation via Sparse Bayesian Learning
TL;DR: An efficient ML DOA estimator based on a spatially overcomplete array output formulation that surpasses state-of-the-art methods largely in performance, especially in demanding scenarios such as low signal-to-noise ratio (SNR), limited snapshots and spatially adjacent signals.
Journal ArticleDOI
Distributed Compressive Sampling for Lifetime Optimization in Dense Wireless Sensor Networks
TL;DR: This paper proposes a new algorithm for in-network compression aiming at longer network lifetime based on ZigBee protocol, which is fully distributed: each node autonomously takes a decision about the compression and forwarding scheme to minimize the number of packets to transmit.
References
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Book
Compressed sensing
TL;DR: It is possible to design n=O(Nlog(m)) nonadaptive measurements allowing reconstruction with accuracy comparable to that attainable with direct knowledge of the N most important coefficients, and a good approximation to those N important coefficients is extracted from the n measurements by solving a linear program-Basis Pursuit in signal processing.
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Robust uncertainty principles: exact signal reconstruction from highly incomplete frequency information
TL;DR: In this paper, the authors considered the model problem of reconstructing an object from incomplete frequency samples and showed that with probability at least 1-O(N/sup -M/), f can be reconstructed exactly as the solution to the lscr/sub 1/ minimization problem.
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An Introduction To Compressive Sampling
TL;DR: The theory of compressive sampling, also known as compressed sensing or CS, is surveyed, a novel sensing/sampling paradigm that goes against the common wisdom in data acquisition.
Journal ArticleDOI
Decoding by linear programming
Emmanuel J. Candès,Terence Tao +1 more
TL;DR: F can be recovered exactly by solving a simple convex optimization problem (which one can recast as a linear program) and numerical experiments suggest that this recovery procedure works unreasonably well; f is recovered exactly even in situations where a significant fraction of the output is corrupted.
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Stable signal recovery from incomplete and inaccurate measurements
TL;DR: In this paper, the authors considered the problem of recovering a vector x ∈ R^m from incomplete and contaminated observations y = Ax ∈ e + e, where e is an error term.