Lopez-Martinez, F.J.; Kurniawan, E.; Islam, R.; Goldsmith, A., "Average Fade Duration for Amplify-and-Forward Relay Networks in Fading Channels," in Wireless Communications, IEEE Transactions on , vol.14, no.10, pp.5454-5467, Oct. 2015
We investigate the dynamics of the equivalent channel gain in amplify-and-forward multihop relay networks. For this purpose, we analyze the level crossing rate and the average fade duration in this scenario, obtaining exact closed-form expressions for these statistics when the individual links are affected by log-normal fading with arbitrary autocorrelation. We also provide approximate closed-form expressions for the cascaded Nakagami-m fading channel, based on a new formulation of the log-normal approximation for the product of positive random variables. Using this analytical framework we characterize the dynamics of the equivalent multihop channel gain for different correlation models, and study the influence of sampling time, the number of hops and the relay mobility in the investigated scenarios. As a practical application, we use these results to evaluate the burst error rate of a fixed gain amplify-and-forward relay transmission over multihop channel under both fading models.
A*STAR Graduate Scholarship Postdoctoral Fellowship Grant
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