@article{oai:nitech.repo.nii.ac.jp:00005589,
 author = {Fuwa, Yasuhiro and Okamoto, Eiji and Iwanami, Yasunori},
 issue = {12},
 journal = {IEICE TRANSACTIONS on Communications},
 month = {Dec},
 note = {Orthogonal frequency division multiple access (OFDMA) is adopted as a multiuser access scheme in recent cellular systems such as long term evolution (LTE) and WiMAX. In those systems, the performance improvement on cell-edge users is crucial to provide high-speed services. We propose a new resource allocation scheme based on multiple input multiple output ? orthogonal frequency division multiple access ? code division multiplexing (MIMO-OFDMA-CDM) to achieve performance improvements in terms of cell-edge user throughput, bit error rate, and fairness among users. The proposed scheme adopts code division multiplexing for MIMO-OFDMA and a modified proportional fairness algorithm for CDM, which enables the fairness among users and a higher throughput. The performance improvements are clarified by theoretical analysis and simulations., application/pdf},
 pages = {3550--3558},
 title = {An Effective Downlink Resource Allocation Scheme Based on MIMO-OFDMA-CDM in Cellular System},
 volume = {E94-B},
 year = {2011}
}