A unified exposition of passification-based synchronization of nonlinear systems over the limited-band communication channel is given. A simple adaptive synchronization scheme employing the binary quantizer and the first order coder in the communication channel is presented and analytical bounds for the closed-loop adaptive system performance are found. Relevance of passifiability condition for controlled synchronization of master-slave nonlinear systems for first order and full order coder/decoder pair is also demonstrated. The experimental results for state estimation of nonlinear oscillating system are presented.