New Performance Approximations for Multi-Hop Fixed-Gain AF Relay Networks
A new e2e SNR approximation for the multi-hop FG-AF relay networks over i.n.i.d Nakagami-m fading channels was proposed and used to derive performance metrics. First, the CDF and the MGF of the e2e SNR approximation were derived and used to derive the outage probability, average SER and generalized SNR moments. In order to obtain valuable system-designing insights, the high SNR approximations; the asymptotic outage probability, average SER, diversity order and the coding gain were derived for the multi-hop blind-AF relay networks. The tightness of the proposed performance approximations are compared against the exact metrics and the existing bounds. The proposed approximations can be used as benchmarks for practical system designing.