Delay performance of a broadcast spectrum sharing network in Nakagami-m fading

Fahd Ahmed Khan, Kamel Tourki, Mohamed-Slim Alouini, Khalid A. Qaraqe

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


In this paper, we analyze the delay performance of a point-to-multipoint secondary network (P2M-SN), which is concurrently sharing the spectrum with a point-to-multipoint primary network (P2M-PN). The channel is assumed to be independent but not identically distributed (i.n.i.d.) and has Nakagami-m fading. A constraint on the peak transmit power of the secondary-user transmitter (SU-Tx) is considered, in addition to the peak interference power constraint. The SU-Tx is assumed to be equipped with a buffer and is modeled using the M/G/1 queueing model. The performance of this system is analyzed for two scenarios: 1) P2M-SN does not experience interference from the primary network (denoted by P2M-SN-NI), and 2) P2M-SN does experience interference from the primary network (denoted by P2M-SN-WI). The performance of both P2M-SN-NI and P2M-SN-WI is analyzed in terms of the packet transmission time, and the closed-form cumulative density function (cdf) of the packet transmission time is derived for both scenarios. Furthermore, by utilizing the concept of timeout, an exact closed-form expression for the outage probability of the P2M-SN-NI is obtained. In addition, an accurate approximation for the outage probability of the P2M-SN-WI is also derived. Furthermore, for the P2M-SN-NI, the analytic expressions for the total average waiting time (TAW-time) of packets and the average number of packets waiting in the buffer of the SU-Tx are also derived. Numerical simulations are also performed to validate the derived analytical results. © 1967-2012 IEEE.
Original languageEnglish (US)
Pages (from-to)1350-1364
Number of pages15
JournalIEEE Transactions on Vehicular Technology
Issue number3
StatePublished - Mar 2014

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported in part by King Abdullah University of Science and Technology and in part by the Qatar National Research Fund through National Priorities Research Program under Grant NPRP 5-250-2-087. This paper was presented in part at the IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN 2012), Bellevue, WA, USA, October 16-19, 2012. The review of this paper was coordinated by Dr. D. Zhao.

ASJC Scopus subject areas

  • Automotive Engineering
  • Applied Mathematics
  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Aerospace Engineering


Dive into the research topics of 'Delay performance of a broadcast spectrum sharing network in Nakagami-m fading'. Together they form a unique fingerprint.

Cite this