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Fundamental capacity limits of cognitive radio in fading environments with imperfect channel information

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Fundamental capacity limits of cognitive radio in fading environments with imperfect channel information. / Musavian, Leila; Aissa, Sonia.
In: IEEE Transactions on Communications, Vol. 57, No. 11, 11.2009, p. 3472-3480.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Musavian L, Aissa S. Fundamental capacity limits of cognitive radio in fading environments with imperfect channel information. IEEE Transactions on Communications. 2009 Nov;57(11):3472-3480. doi: 10.1109/TCOMM.2009.11.070410

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Musavian, Leila ; Aissa, Sonia. / Fundamental capacity limits of cognitive radio in fading environments with imperfect channel information. In: IEEE Transactions on Communications. 2009 ; Vol. 57, No. 11. pp. 3472-3480.

Bibtex

@article{4ffff904ada74ef49e0e35c1f84a3010,
title = "Fundamental capacity limits of cognitive radio in fading environments with imperfect channel information",
abstract = "In this paper, we analyze the capacity gains of opportunistic spectrum-sharing channels in fading environments with imperfect channel information. In particular, we consider that a secondary user may access the spectrum allocated to a primary user as long as the interference power, inflicted at the primary's receiver as an effect of the transmission of the secondary user, remains below predefined power limits, average or peak, and investigate the capacity gains offered by this spectrum-sharing approach when only partial channel information of the link between the secondary's transmitter and primary's receiver is available to the secondary user. Considering average received-power constraint, we derive the ergodic and outage capacities along with their optimum power allocation policies for Rayleigh flat-fading channels, and provide closed-form expressions for these capacity metrics. We further assume that the interference power inflicted on the primary's receiver should remain below a peak threshold. Introducing the concept of interference-outage, we derive lower bounds on the ergodic and outage capacities of the channel. In addition, we obtain closed-form expressions for the expenditure-power required at the secondary transmitter to achieve the above-mentioned capacity metrics. Numerical simulations are conducted to corroborate our theoretical results.",
keywords = "Channel capacity, Chromium, Cognitive radio, Fading, Information analysis, Interference constraints, Leak detection, Quality of service, Radio transmitters, Receivers",
author = "Leila Musavian and Sonia Aissa",
year = "2009",
month = nov,
doi = "10.1109/TCOMM.2009.11.070410",
language = "English",
volume = "57",
pages = "3472--3480",
journal = "IEEE Transactions on Communications",
issn = "0090-6778",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "11",

}

RIS

TY - JOUR

T1 - Fundamental capacity limits of cognitive radio in fading environments with imperfect channel information

AU - Musavian, Leila

AU - Aissa, Sonia

PY - 2009/11

Y1 - 2009/11

N2 - In this paper, we analyze the capacity gains of opportunistic spectrum-sharing channels in fading environments with imperfect channel information. In particular, we consider that a secondary user may access the spectrum allocated to a primary user as long as the interference power, inflicted at the primary's receiver as an effect of the transmission of the secondary user, remains below predefined power limits, average or peak, and investigate the capacity gains offered by this spectrum-sharing approach when only partial channel information of the link between the secondary's transmitter and primary's receiver is available to the secondary user. Considering average received-power constraint, we derive the ergodic and outage capacities along with their optimum power allocation policies for Rayleigh flat-fading channels, and provide closed-form expressions for these capacity metrics. We further assume that the interference power inflicted on the primary's receiver should remain below a peak threshold. Introducing the concept of interference-outage, we derive lower bounds on the ergodic and outage capacities of the channel. In addition, we obtain closed-form expressions for the expenditure-power required at the secondary transmitter to achieve the above-mentioned capacity metrics. Numerical simulations are conducted to corroborate our theoretical results.

AB - In this paper, we analyze the capacity gains of opportunistic spectrum-sharing channels in fading environments with imperfect channel information. In particular, we consider that a secondary user may access the spectrum allocated to a primary user as long as the interference power, inflicted at the primary's receiver as an effect of the transmission of the secondary user, remains below predefined power limits, average or peak, and investigate the capacity gains offered by this spectrum-sharing approach when only partial channel information of the link between the secondary's transmitter and primary's receiver is available to the secondary user. Considering average received-power constraint, we derive the ergodic and outage capacities along with their optimum power allocation policies for Rayleigh flat-fading channels, and provide closed-form expressions for these capacity metrics. We further assume that the interference power inflicted on the primary's receiver should remain below a peak threshold. Introducing the concept of interference-outage, we derive lower bounds on the ergodic and outage capacities of the channel. In addition, we obtain closed-form expressions for the expenditure-power required at the secondary transmitter to achieve the above-mentioned capacity metrics. Numerical simulations are conducted to corroborate our theoretical results.

KW - Channel capacity

KW - Chromium

KW - Cognitive radio

KW - Fading

KW - Information analysis

KW - Interference constraints

KW - Leak detection

KW - Quality of service

KW - Radio transmitters

KW - Receivers

UR - http://www.scopus.com/inward/record.url?scp=78649376595&partnerID=8YFLogxK

U2 - 10.1109/TCOMM.2009.11.070410

DO - 10.1109/TCOMM.2009.11.070410

M3 - Journal article

VL - 57

SP - 3472

EP - 3480

JO - IEEE Transactions on Communications

JF - IEEE Transactions on Communications

SN - 0090-6778

IS - 11

ER -