Dynamic Spatial Subcarrier and Power Allocation for Multiuser MIMO-OFDM System

摘要：

The adaptive antenna-array based OFDM system always uses beamforming to choose the channel with largest Eigenvalue to transmit the OFDM block symbol. Such selection diversity is a simple way. However, it does not make full use of the capacity antenna-array promise. With the goal of maximizing the system throughput with a limited power for the target BER, a novel dynamic subcarrier and power allocation scheme based on SVD decomposition is proposed in this paper. We investigate the algorithm in three backgrounds: the impact of SNR, antenna number and user number. Numerical simulation results show that the proposed subcarrier and power assigning algorithm yields a much larger multiplexing gain than the largest Eigen model.

关键词： MIMO-OFDM multiuse MA RA subcarrierallocation power allocation

作者: Nana Leng Shouyi Yang Yanhui Lu Lin Qi

作者单位: College of Information Engineering, Zhengzhou University, P.R.China

会议类型: 国际会议

会议名称: 第三届IEEE无线通讯、网络技术暨移动计算国际会议

会议地点: 上海

会议语种:英文

在线出版日期: 2007-09-21（万方平台首次上网日期，不代表论文的发表时间）