|
 
|
[CPl18] Resource Allocation with Successive Coding for OFDM-based Cognitive System subject to Statistical CSI
Revue Internationale avec comité de lecture : Journal Mathematical Problems in Engineering, pp. 1-12, 2018Mots clés: Cognitive radio, underlay, resource allocation, OFDM, statistical CSI, outage probability.
Résumé:
This paper investigates the resource allocation problem for a multi-carrier underlay cognitive radio system, under the assumption
that only statistical Channel State Information (CSI) about the primary channels is available at the secondary user. More specifically,
we maximize the system utility under primary and secondary user outage constraints and the total power constraint. The secondary
user transmission is also constrained by the interference threshold imposed by the primary user. Moreover, the secondary
receiver adapts its decoding strategy, which is either treating interference as noise or using successive interference cancellation or
superposition coding. This leads to a non-convex optimization problem, either with perfect or statistical CSI. Consequently, we
propose a sequential-based algorithm to efficiently obtain a solution to the problem. The simulation results show that the sequential
algorithm is convergent and that our global proposed scheme achieves larger secondary and sum rates than other algorithms where
the decoding strategy is not adapted.
BibTeX
| @article { | |||
| CPl18, | |||
| title | = | "{Resource Allocation with Successive Coding for OFDM-based Cognitive System subject to Statistical CSI}", | |
| author | = | "M. Chami and M. Pischella and D. le Ruyet", | |
| journal | = | "Mathematical Problems in Engineering", | |
| year | = | 2018, | |
| pages | = | "1-12", | |
| } | |||
