Modeling simulation of transmitter-receiver system using VHDL-AMS

Summary It is important to provide reliable and efficient communication for data transmission in wireless sensor networks. To attempt this purpose, implementation details for several blocks of communication system must be carefully modeled. In this context, the present paper introduces transmitter-receiver system architecture for sensors networks applications. It presents the study, design and simulation of communication system using VHDL-AMS (Very High Speed Integrated Circuit Hardware Description Language-Analog and Mixed-Signal) language. We expose implementation details of system parts based on a direct sequence spread-spectrum with a 2.4 GHz carrier, the model of BPSK modulation for digital transmission, and functional filter side. The proposed architecture is validated on Matlab environment. The designed architecture respects the specific context of wireless sensors networks (frequency, BER...). Obtained results validate the proposed architecture and prove the way to determining and discussing some critical parameters values.