SECURE TRANSMISSION OVER WSN VIA DECISION FUSION AND DISTRIBUTED DETECTION V.PADMAPRIYA *1

In wireless device networks (WSNs), security and energy consumption are thought-about as durable technical challenges as sensors typically suffer from quality and energy constraints. During this paper, we have a tendency to study an easy and economical physical-layer security to supply knowledge confidentiality in a very distributed detection state of affairs. Specially, to forestall passive eavesdropping on transmission knowledge from sensors to AN ally fusion center (AFC), we have a tendency to propose a unique secret writing theme and call fusion rules for a parallel access channel model. The projected theme takes advantage of a free resource, i.e., randomness of wireless channels, to cipher the binary native call of every device in such how that the binary native call is flipped consistent with fast channel gain between the device and AFC. The location-specific and reciprocal properties of wireless channels alter the device and AFC to share the inherent randomness of wireless channels that don't seem to be on the market to an hearer. What is more, it's shown that the theme is well-suited to an occasional quality and energy economical modulation technique, no coherent binary frequency shift keying. to gauge performances of the projected theme, log-likelihood-ratio-based call fusion ways at the AFC area unit analyzed, and comparisons of call performances area unit disbursed. Additionally, we have a tendency to prove that the projected theme achieves excellent secrecy with an easy structure that's fitted to sensors of restricted quality