Determination of RF source power in WPSN using modulated backscattering

TL;DR

This paper analyzes how to determine the optimal RF source power and frequency for interference-free communication in wireless passive sensor networks using modulated backscattering, enhancing network lifetime and coverage.

Contribution

It provides an analytical framework for selecting RF source parameters to ensure interference-free WPSN operation with optimal coverage and power.

Findings

RF source power and frequency are critical for interference-free WPSN communication.

Proper parameter selection maintains coverage and reduces energy consumption.

Analytical methods guide design choices for WPSN deployment.

Abstract

A wireless sensor network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at different locations. During RF transmission energy consumed by critically energy-constrained sensor nodes in a WSN is related to the life time system, but the life time of the system is inversely proportional to the energy consumed by sensor nodes. In that regard, modulated backscattering (MB) is a promising design choice, in which sensor nodes send their data just by switching their antenna impedance and reflecting the incident signal coming from an RF source. Hence wireless passive sensor networks (WPSN) designed to operate using MB do not have the lifetime constraints. In this we are going to investigate the system analytically. To obtain interference-free communication connectivity with the WPSN nodes number of RF sources is determined and analyzed in terms of output power and the transmission frequency of RF sources, network size, RF source and WPSN node characteristics. The results of this paper reveal that communication coverage and RF Source Power can be practically maintained in WPSN through careful selection of design parameters