Cross-layer design for cognitive radios with joint AMC and ARQ under delay QoS constraint

Musavian, L. and Le-Ngoc, T. (2012) Cross-layer design for cognitive radios with joint AMC and ARQ under delay QoS constraint. In: Wireless Communications and Mobile Computing Conference (IWCMC), 2012 8th International. IEEE, pp. 419-424. ISBN 9781457713781

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Abstract

In order to guarantee dual quality-of-service (QoS) measures, namely, packet error rate (PER) and delay constraint, in a spectrum-sharing channel, we propose a cross-layer resource allocation approach in this paper. In particular, we assume an underlay cognitive radio scenario, in which, a secondary user (SU) is granted access to the spectrum as long as its average interference power, imposed on the primary-user (PU) receiver is below a predefined threshold. The SU employs adaptive modulation and coding (AMC) at the physical layer and automatic repeat request (ARQ) at the link-layer. An adaptive power and rate allocation scheme is proposed for the SU transmitter to meet both the PER requirement and the statistical delay constraints. To this end, we use the effective capacity concept and obtain closed-form expressions for the power allocation and capacity of the SU's link in Nakagami-m fading channels.

Item Type:
Contribution in Book/Report/Proceedings
ID Code:
61306
Deposited By:
Deposited On:
26 Dec 2012 15:15
Refereed?:
Yes
Published?:
Published
Last Modified:
07 Jan 2020 03:22