Joint Optimization of Subchannel Reassignment and Power Adaptation for Multicarrier Cooperative Systems
An Amplify-and-Forward multicarrier cooperative system is proposed in this paper. The optimal resource-allocation problem has been investigated in terms of improving data rate. An effective resource-allocation algorithm is proposed based on three techniques, adaptive modulation, subchannel reassignment design and transmit power adaptation. The designed subchannel reassignment not only increases the average data rate, but also raises the threshold of water-filling in optimizing power allocation that can further increase data rate. Since the power allocation is based on the designed subchannel reassignment, the complexity of the proposed algorithm is least. Simulation results show that the proposed algorithm effectively increases the systems average data rate.
cooperative communication resource allocation adaptive modulation subchannel reassignment power adaptation
Hangguan Shan Hao Wang Zongxin Wang
Communication Science and Engineering Department Fudan University
国际会议
上海
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）