PROJECT TITLE :
Performance evaluation of maximal ratio combining in Shadowed-Rician fading land mobile satellite channels with estimated channel gains
The maximal ratio combining (MRC) theme for Shadowed-Rician (SR) fading land mobile satellite (LMS) channels with estimated channel gains is studied, during this paper. It's assumed that satellite contains a single antenna and earth station (ES) has multiple antennas. For this set-up, a maximum-likelihood decoder comes beneath assumption that perfect channel state information (CSI) is known; then the perfect CSI is replaced with estimated CSI in call metric at ES. The MRC theme for SR fading LMS channels has been studied in existing literature mostly with excellent CSI assumption. We derive approximate closed-type expressions of the probability density perform, cumulative distribution, moment generating perform (MGF), and analytical diversity order for the MRC based receiver in freelance and identically distributed SR fading LMS channels with estimated channel gains. The author conjointly provides approximate closed-type expressions of the outage likelihood and capability of the considered scheme with estimated channel gains. Next, the author considers correlated SR fading LMS links and derive approximate bit error rate of the satellite system with estimated channel gains. It is shown from analysis and simulation that channel estimation error and correlation do not affect the range order however cut back the capability of the thought of system.
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