| 一种新的MIMO—OFDM白适应比特功率分配方案研究 |
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| 引用本文： | 王丽.一种新的MIMO—OFDM白适应比特功率分配方案研究[J].通信技术,2009,42(5):65-67. |
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| 作者姓名： | 王丽 |
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| 作者单位： | 齐齐哈尔大学,计算中心,黑龙江,齐齐哈尔,161006 |
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| 摘 要： | 针对MIMO-OFDM系统的自适应调制问题，在完全已知信道状态和满足固定速率以及给定的误比特率的约束下以最小化发射功率为目的，文中提出了一种低复杂度的自适应方案。该方案将对Chow算法和Campello算法进行功率分配和步长加载的改进。仿真结果表明，该算法在降低复杂度的同时提高了系统的性能。
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| 关 键 词： | 多输入输出正交频分复用 自适应调制 比特和功率分配 |
A New MIMO-OFDM System Based Adaptive Bit Power Allocation Algorithm |
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| WANG Li.A New MIMO-OFDM System Based Adaptive Bit Power Allocation Algorithm[J].Communications Technology,2009,42(5):65-67. |
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| Authors: | WANG Li |
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| Affiliation: | WANG Li (Center of Computer, Qiqihar University,Qiqihar Heilongjiang 161006, China) |
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| Abstract: | In this paper, an adaptive modulation scheme is proposed in order to minimize the total transmission power under given BER and satisfy the fixed transmission rate in MIMO-OFDM systems. For this purpose, and adaptive scheme with low complexity is described, and the modifications on power allocation and step-size load of Chaw and Levin Campello algorithms are implemented. The simulation results show that, by the modified algorithm, the MIMO-OFDM system is improved in performance while is reduced in complexity. |
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| Keywords: | MIMO-OFDM adaptive modulation adaptive and power allocation |
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