Uplink Performance Analysis of Multiple Relays Hybrid Satellite-Terrestrial Cooperative Networks employing Amplify-and-Forward DS-CDMA Technique

Abstract

This paper investigates the performance analysis of the uplink fixed gain Amplify and Forward (AF) for the Hybrid Satellite Terrestrial Cooperative Networks (HSTCNs). The proposed HSTCN utilizes both the orthogonal and the non-orthogonal Direct Sequence Code Division Multiple Access (DS-CDMA) technique between the uplink users and it applies the maximal ratio combining (MRC) scheme at the destination receiver. The mobile-satellite and the base station-satellite are assumed to have independent uplink channels, described as shadowed-Rician fading channels whereas the mobile-base station link experiences Nakagami-m fading channels. The performance for HSTCN different Techniques are performed under different numbers of relays. Moreover, a closed form Moment Generating Function (MGF) for the uplinks are derived for the total end-to-end instantaneous signal to noise ratio (SNR) to obtain the outage probability and the probability of error. Furthermore, the closed form nth Moment function derivation will be used to estimate the Ergodic capacity of the system. The analytical results are confirmed by Monte Carlo simulations for the uplink HSTCNs. Furthermore, the paper studies the significant parameters of the applied channels for the mobile-satellite, the base station-satellite and the mobile-base station links that affect the system performance.