Modeling and analysis on mobile-to-mobile cascade channel of amplify-and-forward two-way relay networks

This paper focuses on modeling and analysis of mobile-to-mobile (M2M) fading channels in amplify-and-forward (AF) two-way relay networks (TWRN). It is assumed that users and multiple single-antenna relays are all surrounded by tremendous scatterers, and non-line-of-sight (NLOS) link exists between them. After the cascade channel of TWRN was divided into transmission part and interference part, a stochastic reference model is derived based on a geometrical two-ring scattering model. Closed-form expressions of temporal auto-correlation function (ACF) and the Doppler power spectrum are deduced associated with this new model. Numerical result shows that this new reference model can serve as critical foundation for not only thorough understanding about statistical characterization of the cascade channel, but also more precise simulation on M2M TWRN.