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Scalability Analysis of Wireless Sensor Networks Using Analytical Techniques

The analysis of scalability of wireless sensornetworks is a challenging performance issue. In this paper,we employ an analytical method based on probabilitydensity function Signal-to-Interference-plus-Noise-Ratio(SINR) of links to evaluate the performance of a wirelesssensor network in terms of bit-error-rate (BER). We derivean analytical formula for the average of BER according tothe physical resources allocated to the network andproperties of routing method which is used. We show thatlink BER has a minimum in a specific node density value.This is called optimum density point. The analyticalderivations have been validated using simulation studies.