作者: Marouane Salhaoui , Mounir Arioua , Otman Chakkor , Jihane Elaasri
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摘要: The physical layer defines the way of transmitting bits over a link connecting different nodes network. bit flow is represented as code words or symbols and converted to signal in order be transmitted using hardware transmission medium. In this work we focus on Physical Layer WSN which based Zigbee. This paper introduces evaluates performance IEEE 802.15.4 standard while covering spreading modulation techniques through an AWGN channel. Simulations tests are performed Matlab Simulink, obtained results analyzed Bit Error Rate (BER) vis-a-vis Signal Noise Ratio (SNR), tuning data rate type.