| 一种低复杂度MIMO-OFDMA系统的自适应子载波分配算法 |
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| 引用本文： | 戴志超.一种低复杂度MIMO-OFDMA系统的自适应子载波分配算法[J].信息通信,2007,20(1):39-42. |
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| 作者姓名： | 戴志超 |
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| 作者单位： | 东南大学信息科学与工程学院,南京,210096 |
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| 摘 要： | 本篇论文提出一种多用户多输入多输出正交频分复用系统(MIMO-OFDMA)下行链路具有信道变化实时性的动态子载波分配算法.文中采用奇异置分解,将每个子载波的MIMO衰落信道分解为独立的并行子信道,利用子信道通对各子载波容量的求解推导出本文算法.此次优的算法在满足各个用户数据速率和BER要求的同时,能减小发射功率.仿真结果也证明了这一点.
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| 关 键 词： | MIMO-OFDMA 自适应子载波分配 最小化发射功率 容量 |
| 文章编号： | 1673-1131（2007）01-0039-04 |
A Low Complexity Adaptive Subcarrier Allocation Algorithm In MIMO-OFDMA System |
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| DAI Zhi-chao.A Low Complexity Adaptive Subcarrier Allocation Algorithm In MIMO-OFDMA System[J].Information & Communications,2007,20(1):39-42. |
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| Authors: | DAI Zhi-chao |
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| Affiliation: | school of information science and engineering, South-east University, Nanjing 210096,China |
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| Abstract: | In this paper, I propose an adaptive subcarrier, bit, and power allocation algorithm for the downlink MIMO-OFDMA system. Use the singular value decomposition, the MIMO fading channel of each subcarrier is transformed into an equivalent bank of parallel SISO sub-channels. Calculating the capacity of each subcarrier of each subchannel, I conclude this sub-optimal algorithm. This algorithm can meet with the desire of bit rate and BER of every user and decrease the power, The simulation also proves this conclusion above. |
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| Keywords: | MIMO-OFDMA adaptive source allocation power minimization capacity |
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