Abstract
Wireless communication and power line communication are extensively applied in various fields, such as household Internet of things. For cooperative communication of amplify–forward relay using wireless access and power line transmission, the hybrid model of universal Nakagami wireless fading and lognormal power line fading was used in this study. A comparative analysis of similarities between Gamma and lognormal distributions and lognormal distribution characteristics of relay link signal-to-noise ratio was also carried out. Given the deficiencies of lognormal variable add approximation method, lognormal distribution parameters combined computing method based on moment generation function was proposed. Theoretical formulas of outage probability and bit error rate after amplify–forward relay and maximal-ratio combining was derived on the basis of moment generation function of the total output signal-to-noise ratio of the system. Effectiveness and reliability of the algorithm and theoretical formula were verified through simulation, and influence rules of hybrid channel fading and power distribution on the system performance were analyzed.
Highlights
Power line communication (PLC) and wireless communication are widely applied in various fields, such as smart power grid and household Internet of things (IoT).[1,2,3,4,5]
The results provide necessary theoretical support for the application of dual-media cooperative communication
The moment generation function (MGF) equation approximation together with a mixture LogN of two elements can be used to derive the probability density functions (PDFs) parameters of the signal-to-noise ratio (SNR) at the receiving end of the amplify– forward (AF) transmission system, and the outage probability and bit error rate (BER) of the system can be further derived with an improved accuracy
Summary
Power line communication (PLC) and wireless communication are widely applied in various fields, such as smart power grid and household Internet of things (IoT).[1,2,3,4,5] wireless communication can realize mobile access, a radio frequency signal of 2.4 GHz can be affected by obstacles with great signal attenuation. A computing method of the system performance based on LogN distribution parameter of system total SNR was obtained.
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