A Close Approximation of the Nonempty Buffer Probability Over Nakagami-m Fading Channels

作者：Chen Yu^*; Darwazeh Izzat

来源：IEEE Communications Letters, 2015, 19(7): 1121-1124.

DOI：10.1109/LCOMM.2015.2431267

• Effective capacity model
• nonempty buffer probability
• approximation
• Nakagami-m fading channel

Based on the effective capacity model, the tail probability of backlog size in a wireless communication system can be characterized by two effective capacity functions, namely, the QoS exponent and the nonempty buffer probability. The QoS exponent is well understood in the literature; however, there is little known about the other function, i.e., the nonempty buffer probability, because this function has not been exactly derived. In this letter, we derive a new approximation formula for this function over Nakagami-m fading channels. Simulation results indicate that our formula can closely approximate this function and is more accurate than existing approximation formulae.

• 出版日期2015-7