Delay analysis of a point-to-multipoint spectrum sharing network with CSI based power allocation

Fahd Ahmed Khan, Kamel Tourki, Mohamed Slim Alouini, Khalid Qaraqe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this paper, we analyse the delay performance of a point-to-multipoint cognitive radio network which is sharing the spectrum with a point-to-multipoint primary network. The channel is assumed to be independent but not identically distributed and has Nakagami-m fading. A constraint on the peak transmit power of the secondary user transmitter (SU-Tx) is also considered in addition to the peak interference power constraint. Based on the constraints, a power allocation scheme which requires knowledge of the instantaneous channel state information (CSI) of the interference links is derived. The SU-Tx is assumed to be equipped with a buffer and is modelled using the M/G/1 queueing model. Closed form expressions for the probability distribution function (PDF) and cumulative distribution function (CDF) of the packet transmission time is derived. Using the PDF, the expressions for the moments of transmission time are obtained. In addition, using the moments, the expressions for the performance measures such as the total average waiting time of packets and the average number of packets waiting in the buffer of the SU-Tx are also obtained. Numerical simulations corroborate the theoretical results.

Original languageEnglish
Title of host publication2012 IEEE International Symposium on Dynamic Spectrum Access Networks, DYSPAN 2012
Pages235-241
Number of pages7
DOIs
Publication statusPublished - 2012
Event2012 IEEE International Symposium on Dynamic Spectrum Access Networks, DYSPAN 2012 - Bellevue, WA, United States
Duration: 16 Oct 201219 Oct 2012

Other

Other2012 IEEE International Symposium on Dynamic Spectrum Access Networks, DYSPAN 2012
CountryUnited States
CityBellevue, WA
Period16/10/1219/10/12

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ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Khan, F. A., Tourki, K., Alouini, M. S., & Qaraqe, K. (2012). Delay analysis of a point-to-multipoint spectrum sharing network with CSI based power allocation. In 2012 IEEE International Symposium on Dynamic Spectrum Access Networks, DYSPAN 2012 (pp. 235-241). [6478134] https://doi.org/10.1109/DYSPAN.2012.6478134