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Most existing studies on cooperative relay in wireless sensor networks (WSNs) concentrate on link capacity or symbol error rate (SER) constrained power allocation. We advance the study in two aspects. First, we adopt the packet error rate (PER) constraint instead of SER or link capacity constraint. Assuming non-coherent frequency shift keying (NC-FSK) modulation (used in Mica2 motes) and selection...
In this paper we propose a method to specify a robust and energy efficiency physical layer for wireless sensor networks. Thus, from an energy model we show the influence of the channel on energy consumption. Our channel model is a realistic propagation model that takes into account all environmental specificity (geometric, electric) according to a real environment. The Bit Error Rate (BER) is used...
Energy conversation is a critical problem in wireless sensor networks (WSNs) so that the energy consumption must be minimized while satisfying application requirements. The energy efficiency can be supported across all layers of the protocol stack. In this paper, we propose and analyze a cross-layer energy efficiency model, which takes routing layer, MAC layer, data link layer, hardware circuitry,...
Due to unique characteristics of sensor nodes, choosing an energy-efficient modulation scheme with low-complexity implementation (refereed to as green modulation) is a critical factor in the physical layer of Wireless Sensor Networks (WSNs). The main goal of this paper is to analyze and compare the energy efficiency of various sinusoidal carrier-based modulation schemes using parameters in the IEEE...
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