Efficient performance bounds for multihop wireless Communications systems with non-regenerative fixed-gain relays operating over non-identical generalized fading channels, are presented. More specifically, the end-to-end signal-to-noise ratio (SNR) is formulated and upper bounded by using the well-known inequality between harmonic and geometric mean of positive random variables. Based on this bound, the moments of the end-to-end SNR for Rayleigh, Nakagami-m, and Rice fading channels, are obtained in simple closed-forms. Furthermore, the outage performance and the average error probability for coherent and non-coherent modulation schemes are also studied using the moment-generating function (MGF) approach. The proposed method for the evaluation of the MGF is based on the Padé approximants theory. Moreover, new expressions are derived for the gain of previously proposed "semi-blind" relays. These expressions are used in numerical and computer simulations examples, to verify the accuracy and to show the tightness of the proposed bounds.
|Number of pages||5|
|Publication status||Published - 2004|
|Event||GLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States|
Duration: Nov 29 2004 → Dec 3 2004
|Other||GLOBECOM'04 - IEEE Global Telecommunications Conference|
|Period||11/29/04 → 12/3/04|
ASJC Scopus subject areas