Adaptive Subcarrier Grouping for Downlink MC-CDMA Systems with MMSE Receiver

被引:0
作者
Wang, Jun-Bo [1 ]
Chen, Hua-Min [2 ]
Chen, Ming [2 ]
Xue, Xinhua [2 ]
机构
[1] Nanjing Univ Aeronaut & Astronaut, Coll Informat Sci & Technol, Nanjing 210016, Peoples R China
[2] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing, Peoples R China
来源
2010 IEEE 71ST VEHICULAR TECHNOLOGY CONFERENCE | 2010年
关键词
OVERLAY SITUATIONS; MULTICARRIER CDMA;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper studies the problem of subcarrier grouping in the downlink of multi-carrier code division multiple access (MC-CDMA) systems with linear minimum mean square error (MMSE) receiver. Further, the problem is considered as combinatorial optimization problem. By theoretical analysis, an optimal subcarrier grouping scheme is proposed. Moreover, the proposed scheme is efficient in computational time. According to the instantaneous channel conditions, the proposed optimal scheme can be applied adaptively subcarrier grouping to maximize the system capacity. The simulation results show that the proposed scheme outperforms the conventional static schemes and is efficient in improving the system performance.
引用
收藏
页数:5
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