Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
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TY - GEN
T1 - Quality-of-Service based power allocation in spectrum-sharing channels
AU - Musavian, Leila
AU - Aissa, Sonia
PY - 2008
Y1 - 2008
N2 - In this paper, we propose a quality-of-service (QoS) constrained power and rate allocation scheme for spectrum sharing systems. In particular, we assume existence of secondary users, who are allowed to access the spectrum occupied by a primary user subject to satisfying interference-power limitations. Specifically, we assume that the successful operation of the primary user requires a minimum-rate to be supported by its channel for a certain percentage of time, and obtain an average interference-power constraint that is required to be fulfilled by the secondary user. Applying this limitation, we obtain the maximum arrival-rate supported by a Rayleigh block-fading channel subject to satisfying a given statistical delay QoS constraint. In this respect, we derive an optimal adaptation policy that maximizes the effective capacity of the channel, and provide closed-form expressions for the power allocation and the effective capacity. In addition, we obtain closed-form expressions for the expenditure-power that is required at the secondary transmitter to achieve the above-mentioned capacity metric.
AB - In this paper, we propose a quality-of-service (QoS) constrained power and rate allocation scheme for spectrum sharing systems. In particular, we assume existence of secondary users, who are allowed to access the spectrum occupied by a primary user subject to satisfying interference-power limitations. Specifically, we assume that the successful operation of the primary user requires a minimum-rate to be supported by its channel for a certain percentage of time, and obtain an average interference-power constraint that is required to be fulfilled by the secondary user. Applying this limitation, we obtain the maximum arrival-rate supported by a Rayleigh block-fading channel subject to satisfying a given statistical delay QoS constraint. In this respect, we derive an optimal adaptation policy that maximizes the effective capacity of the channel, and provide closed-form expressions for the power allocation and the effective capacity. In addition, we obtain closed-form expressions for the expenditure-power that is required at the secondary transmitter to achieve the above-mentioned capacity metric.
U2 - 10.1109/GLOCOM.2008.ECP.243
DO - 10.1109/GLOCOM.2008.ECP.243
M3 - Conference contribution/Paper
SN - 9781424423248
SP - -
BT - Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
PB - IEEE
CY - New York
T2 - IEEE Global Telecommunications Conference (GLOBECOM 08)
Y2 - 30 November 2008 through 4 December 2008
ER -