Optimum Power Allocation with Sensitivity Analysis for Passive Radar Applications

Authors

G. Alirezaei, O. Taghizadeh, R. Mathar,

Abstract

        In the present paper, we investigate the power allocation problem in distributed sensor networks and give a sensitivity analysis for perfect and imperfect knowledge of system parameters. As it is common for sensors with weak power-supplies, constraints by sum and individual power-range limitations are imposed. The power allocation problem leads to a signomial program, and is analytically solved by a Lagrangian setup. Typical examples of such networks are passive radar systems with multiple nodes, whose aim is to detect and classify target signals. For each sensor node, an amplify-and-forward strategy for the received target signal is proposed. This per-node information is transmitted over a communication channel and combined at a fusion center. The fusion center carries out the final decision about the type of the target signal by a best linear unbiased estimator and a subsequent classification. In contrast to approaches in the literature, which combine discrete local decisions into a single global one, the approach in the current paper offers many advantages, ranging from the simplicity of its implementation to the achievement of an optimal solution in closed-form. Moreover, it allows for a sensitivity analysis of the whole sensor network under variations of different system parameters.

BibTEX Reference Entry 

@article{AlTaMa14,
	author = {Gholamreza Alirezaei and Omid Taghizadeh and Rudolf Mathar},
	title = "Optimum Power Allocation with Sensitivity Analysis for Passive Radar Applications",
	pages = "3800-3809",
	journal = "Sensors Journal, {IEEE}",
	volume = "14",
	number = "11",
	doi = 10.1109/JSEN.2014.2331271,
	month = Nov,
	year = 2014,
	hsb = hsb999910354212,
	}

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