Performance analysis of an opportunistic multi-user cognitive network with multiple primary users

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Consider a multi-user underlay cognitive network where multiple cognitive users concurrently share the spectrum with a primary network with multiple users. The channel between the secondary network is assumed to have independent but not identical Nakagami-m fading. The interference channel between the secondary users (SUs) and the primary users is assumed to have Rayleigh fading. A power allocation based on the instantaneous channel state information is derived when a peak interference power constraint is imposed on the secondary network in addition to the limited peak transmit power of each SU. The uplink scenario is considered where a single SU is selected for transmission. This opportunistic selection depends on the transmission channel power gain and the interference channel power gain as well as the power allocation policy adopted at the users. Exact closed form expressions for the moment-generating function, outage performance, symbol error rate performance, and the ergodic capacity are derived. Numerical results corroborate the derived analytical results. The performance is also studied in the asymptotic regimes, and the generalized diversity gain of this scheduling scheme is derived. It is shown that when the interference channel is deeply faded and the peak transmit power constraint is relaxed, the scheduling scheme achieves full diversity and that increasing the number of primary users does not impact the diversity order.

Original languageEnglish
Pages (from-to)2004-2019
Number of pages16
JournalWireless Communications and Mobile Computing
Volume15
Issue number16
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint

Scheduling
Channel state information
Rayleigh fading
Outages

Keywords

  • capacity
  • cognitive radio
  • multi-user scheduling
  • outage
  • performance analysis

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Performance analysis of an opportunistic multi-user cognitive network with multiple primary users. / Khan, Fahd Ahmed; Tourki, Kamel; Alouini, Mohamed Slim; Qaraqe, Khalid.

In: Wireless Communications and Mobile Computing, Vol. 15, No. 16, 01.11.2015, p. 2004-2019.

Research output: Contribution to journalArticle

Khan, Fahd Ahmed ; Tourki, Kamel ; Alouini, Mohamed Slim ; Qaraqe, Khalid. / Performance analysis of an opportunistic multi-user cognitive network with multiple primary users. In: Wireless Communications and Mobile Computing. 2015 ; Vol. 15, No. 16. pp. 2004-2019.
@article{17618845283241e1a60fad5ba0d143b8,
title = "Performance analysis of an opportunistic multi-user cognitive network with multiple primary users",
abstract = "Consider a multi-user underlay cognitive network where multiple cognitive users concurrently share the spectrum with a primary network with multiple users. The channel between the secondary network is assumed to have independent but not identical Nakagami-m fading. The interference channel between the secondary users (SUs) and the primary users is assumed to have Rayleigh fading. A power allocation based on the instantaneous channel state information is derived when a peak interference power constraint is imposed on the secondary network in addition to the limited peak transmit power of each SU. The uplink scenario is considered where a single SU is selected for transmission. This opportunistic selection depends on the transmission channel power gain and the interference channel power gain as well as the power allocation policy adopted at the users. Exact closed form expressions for the moment-generating function, outage performance, symbol error rate performance, and the ergodic capacity are derived. Numerical results corroborate the derived analytical results. The performance is also studied in the asymptotic regimes, and the generalized diversity gain of this scheduling scheme is derived. It is shown that when the interference channel is deeply faded and the peak transmit power constraint is relaxed, the scheduling scheme achieves full diversity and that increasing the number of primary users does not impact the diversity order.",
keywords = "capacity, cognitive radio, multi-user scheduling, outage, performance analysis",
author = "Khan, {Fahd Ahmed} and Kamel Tourki and Alouini, {Mohamed Slim} and Khalid Qaraqe",
year = "2015",
month = "11",
day = "1",
doi = "10.1002/wcm.2478",
language = "English",
volume = "15",
pages = "2004--2019",
journal = "Wireless Communications and Mobile Computing",
issn = "1530-8669",
publisher = "John Wiley and Sons Ltd",
number = "16",

}

TY - JOUR

T1 - Performance analysis of an opportunistic multi-user cognitive network with multiple primary users

AU - Khan, Fahd Ahmed

AU - Tourki, Kamel

AU - Alouini, Mohamed Slim

AU - Qaraqe, Khalid

PY - 2015/11/1

Y1 - 2015/11/1

N2 - Consider a multi-user underlay cognitive network where multiple cognitive users concurrently share the spectrum with a primary network with multiple users. The channel between the secondary network is assumed to have independent but not identical Nakagami-m fading. The interference channel between the secondary users (SUs) and the primary users is assumed to have Rayleigh fading. A power allocation based on the instantaneous channel state information is derived when a peak interference power constraint is imposed on the secondary network in addition to the limited peak transmit power of each SU. The uplink scenario is considered where a single SU is selected for transmission. This opportunistic selection depends on the transmission channel power gain and the interference channel power gain as well as the power allocation policy adopted at the users. Exact closed form expressions for the moment-generating function, outage performance, symbol error rate performance, and the ergodic capacity are derived. Numerical results corroborate the derived analytical results. The performance is also studied in the asymptotic regimes, and the generalized diversity gain of this scheduling scheme is derived. It is shown that when the interference channel is deeply faded and the peak transmit power constraint is relaxed, the scheduling scheme achieves full diversity and that increasing the number of primary users does not impact the diversity order.

AB - Consider a multi-user underlay cognitive network where multiple cognitive users concurrently share the spectrum with a primary network with multiple users. The channel between the secondary network is assumed to have independent but not identical Nakagami-m fading. The interference channel between the secondary users (SUs) and the primary users is assumed to have Rayleigh fading. A power allocation based on the instantaneous channel state information is derived when a peak interference power constraint is imposed on the secondary network in addition to the limited peak transmit power of each SU. The uplink scenario is considered where a single SU is selected for transmission. This opportunistic selection depends on the transmission channel power gain and the interference channel power gain as well as the power allocation policy adopted at the users. Exact closed form expressions for the moment-generating function, outage performance, symbol error rate performance, and the ergodic capacity are derived. Numerical results corroborate the derived analytical results. The performance is also studied in the asymptotic regimes, and the generalized diversity gain of this scheduling scheme is derived. It is shown that when the interference channel is deeply faded and the peak transmit power constraint is relaxed, the scheduling scheme achieves full diversity and that increasing the number of primary users does not impact the diversity order.

KW - capacity

KW - cognitive radio

KW - multi-user scheduling

KW - outage

KW - performance analysis

UR - http://www.scopus.com/inward/record.url?scp=84947615106&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84947615106&partnerID=8YFLogxK

U2 - 10.1002/wcm.2478

DO - 10.1002/wcm.2478

M3 - Article

VL - 15

SP - 2004

EP - 2019

JO - Wireless Communications and Mobile Computing

JF - Wireless Communications and Mobile Computing

SN - 1530-8669

IS - 16

ER -