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Performance analysis of AF cooperative systems with HPA nonlinearity in semi-blind relays

Qi, J., Aissa, S. and Alouini, M.-S. (2012) Performance analysis of AF cooperative systems with HPA nonlinearity in semi-blind relays. In: 2012 IEEE Global Communications Conference (GLOBECOM). IEEE, pp. 4182-4186. ISBN 9781467309202

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To link to this item DOI: 10.1109/GLOCOM.2012.6503773


In this paper, dual-hop amplify-and-forward (AF) cooperative systems in the presence of high-power amplifier (HPA) nonlinearity at semi-blind relays, are investigated. Based on the modified AF cooperative system model taking into account the HPA nonlinearity, the expression for the output signal-to-noise ratio (SNR) at the destination node is derived, where the interference due to both the AF relaying mechanism and the HPA nonlinearity is characterized. The performance of the AF cooperative system under study is evaluated in terms of average symbol error probability (SEP), which is derived using the moment-generating function (MGF) approach, considering transmissions over Nakagami-m fading channels. Numerical results are provided and show the effects of some system parameters, such as the HPA parameters, numbers of relays, quadrature amplitude modulation (QAM) order, Nakagami parameters, on performance.

Item Type:Book or Report Section
ID Code:33443
Uncontrolled Keywords:AF cooperative system; HPA nonlinearity; MGF; Nakagami parameter; Nakagami-m fading channel; SEP; amplify and forward communication; destination node; high power amplifier; interference suppression; moment generating function; performance analysis; quadrature amplitude modulation; semiblind relay; signal to noise ratio; symbol error probability

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