| 发送功率最小化自适应MIMO—OFDM系统研究 |
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| 引用本文： | 耿毅.发送功率最小化自适应MIMO—OFDM系统研究[J].山西电子技术,2007(3):61-63. |
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| 作者姓名： | 耿毅 |
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| 作者单位： | 南京邮电大学光电工程学院 江苏南京210003 |
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| 摘 要： | 将自适应比特功率分配技术与空间分集技术结合起来,提出了一种与空时编码结合的固定速率自适应正交频分复用(OFDM)方案。该算法在保证给定的误比特率和信息速率的情况下,使总发送功率最小化。仿真结果表明,该算法在相同误比特率的情况下比不采用自适应技术的MIMO-OFDM系统节省了发送功率。
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| 关 键 词： | OFDM MIMO STC 自适应比特功率分配 |
| 修稿时间： | 2006-11-13 |
The Research on Adaptive MIMO-OFDM System with Minimize Transmission Power |
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| Geng Yi College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing fianghsu , China.The Research on Adaptive MIMO-OFDM System with Minimize Transmission Power[J].Shanxi Electronic Technology,2007(3):61-63. |
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| Authors: | Geng Yi College of Optoelectronic Engineering Nanjing University of Posts and Telecommunications Nanjing fianghsu China |
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| Affiliation: | Geng Yi College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing fianghsu 210003, China) |
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| Abstract: | Combining the adaptive bit and power allocation with spacial diversity,an orthogonal frequency division multiplexing(OFDM) scheme is described in this paper combined with space time coded transmit diversity for frequency selected fading channel.The different modulation types can be adaptively selected in all subcarriers with a constant bit rate transmission adaptation algorithm.According to the subcarrier,it gains to minimize the total transmission power for a given bit error rate.The simulation results show that the proposed adaptive system saves power compared with non-adaptive systems. |
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| Keywords: | orthogonal frequency division multiplexing(OFDM) multiple input multiple output(MIMO) space time coding(STC) adaptive bit and power allocation |
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