| 一种基于MIMO—OFDM系统的自适应功率分配最小化算法 |
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| 引用本文： | 李姣军,陈兵,苏理云.一种基于MIMO—OFDM系统的自适应功率分配最小化算法[J].重庆工学院学报,2009,23(2):113-117. |
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| 作者姓名： | 李姣军 陈兵 苏理云 |
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| 作者单位： | 重庆工学院电子信息与自动化学院; |
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| 基金项目： | 重庆市教委基金资助项目(KJ080614) |
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| 摘 要： | 把一般多载波系统中的自适应功率最小化算法应用到多天线OFDM系统中,同时研究了MI-MO-OFDM系统传输过程中的误比特率变化情况.仿真结果表明,在相同的MIMO-OFDM仿真参数设置下,采用自适应功率分配最小化算法,当信噪比为102时,SISO-OFDM系统误码率比MIMO-OFDM系统误比特率高0.0463;随着配置的天线数增加,MIMO-OFDM系统的性能也得到增强.
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| 关 键 词： | 功率最小化算法 多输入多输出 正交频分复用 自适应调制 |
An Adaptive Power Allocation Minimization Algorithm Based on MIMO-OFDM Systems |
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| LI Jiao-jun,CHEN Bing,SU Li-yun.An Adaptive Power Allocation Minimization Algorithm Based on MIMO-OFDM Systems[J].Journal of Chongqing Institute of Technology,2009,23(2):113-117. |
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| Authors: | LI Jiao-jun CHEN Bing SU Li-yun |
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| Affiliation: | School of Electronic Information and Automation;Chongqing Institute of Technology;Chongqing 400050;China |
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| Abstract: | An adaptive power minimization algorithm in a regular multi-carrier wave system is applied to multi-antenna OFDM system,and the changes of bit error rate in the process of transmission in MIMO-OFDM systems are studied.The simulations show that under the same MIMO-OFDM simulation parameters,the bit error rate(BER) of SISO-OFDM system is 0.0463 than that of MIMO-OFDM system with the same parameters in simulation at the SNR of 102.The performance of the MIMO-OFDM system gets better with the increasing of the a... |
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| Keywords: | power minimization algorithm MIMO OFDM adaptive modulation |
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