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
}
TY - GEN
T1 - Cross-Layer Analysis of Cognitive Radio Relay Networks under Quality of Service Constraints
AU - Musavian, Leila
AU - Aissa, Sonia
PY - 2009
Y1 - 2009
N2 - In this paper, we investigate the performance gains of cognitive radio relay networks under delay quality of service (QoS) limitations at the secondary users, and spectrum-sharing restrictions imposed by the primary users of the channel. In particular, we assume that the primary user allows secondary users to gain access to its allocated spectrum band as long as a certain threshold on its corresponding outage probability is satisfied. Using this constraint, we find the maximum limit on the interference-power inflicted on the primary receiver that should not be exceeded by the transmission of the secondary users. In addition, we assume that the secondary transmitter benefits from an intermediate node, chosen from K terminals, to relay its signal to the destination. Considering that the transmission of the secondary user is subject to satisfying a statistical delay QoS constraint, we obtain the maximum arrival-rate supported by the secondary user's relaying link. In this respect, we derive closed-form expressions for the effective capacity of the channel in Rayleigh block-fading environment Numerical simulations are provided to endorse our theoretical results.
AB - In this paper, we investigate the performance gains of cognitive radio relay networks under delay quality of service (QoS) limitations at the secondary users, and spectrum-sharing restrictions imposed by the primary users of the channel. In particular, we assume that the primary user allows secondary users to gain access to its allocated spectrum band as long as a certain threshold on its corresponding outage probability is satisfied. Using this constraint, we find the maximum limit on the interference-power inflicted on the primary receiver that should not be exceeded by the transmission of the secondary users. In addition, we assume that the secondary transmitter benefits from an intermediate node, chosen from K terminals, to relay its signal to the destination. Considering that the transmission of the secondary user is subject to satisfying a statistical delay QoS constraint, we obtain the maximum arrival-rate supported by the secondary user's relaying link. In this respect, we derive closed-form expressions for the effective capacity of the channel in Rayleigh block-fading environment Numerical simulations are provided to endorse our theoretical results.
U2 - 10.1109/VETECS.2009.5073478
DO - 10.1109/VETECS.2009.5073478
M3 - Conference contribution/Paper
SN - 978-1-4244-2517-4
SP - 1
EP - 5
BT - Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
PB - IEEE
CY - New York
T2 - 69th IEEE Vehicular Technology Conference
Y2 - 26 April 2009 through 29 April 2009
ER -