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Adaptive Resource Allocation and Scheduling for Cognitive Radio MIMO-OFDMA Systems

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4 Author(s)
Wei Liu ; High Performance Network Lab., Chinese Acad. of Sci., Beijing, China ; Yahui Hu ; Song Ci ; Hui Tang

In this paper, channel adaptive resource allocation and user scheduling problem for cognitive radio multiple-inputmultiple-output orthogonal frequency-division multiple access systems is investigated. Furthermore, stochastic approximation is employed to develop an on-line algorithm which is capable of adaptively learning the underlying channel distribution. The NP-hard combinatorial resource allocation and user scheduling problem is then solved through via the Lagrangian relaxation approach. Numerical results demonstrate the effectiveness of our proposed scheme.

Published in:

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Date of Conference:

15-18 May 2011