Indexed on: 16 Jul '14Published on: 16 Jul '14Published in: Science China Information Sciences
In the heterogeneous wireless networks, it has been proved that the joint spectrum and power allocation can achieve network diversity gains for parallel multi-radio access in theory. This article aims to develop an effective and practical algorithm of joint subcarrier, code, and power allocation for parallel multi-radio access of the downlink in heterogeneous wireless networks (e.g., CDMA and OFDMA). Firstly, we propose a unified framework to formulate the subcarrier, code, and power allocation as an optimization problem. Secondly, we propose a resource element (subcarrier and code) scheme based on the threshold type. Simulation results show that the proposed scheme outperforms the existing algorithm for considered wireless scenarios.