Effective Capacity of Statistical Delay QoS Guarantees with Imperfect Channel Information in Spectrum-Sharing Networks

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Provided by: Journal of Communications
Topic: Mobility
Format: PDF
In this paper, the authors consider a spectrum-sharing cognitive network in which a secondary user shares spectrum with an existing primary user as long as the interference caused by the secondary user to the primary user is below permissible levels. They investigate the delay Quality-of-Service (QoS) guaranteed capacity gains with imperfect Channel State Information (CSI) between the secondary transmitter and the primary receiver in Rayleigh fading environments. In particular, they quantify the relation between the secondary link effective capacity and the interference inflicted on the primary user.
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