| 低压电力线通信子信道等效优化方法 |
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| 引用本文： | 李姣军,陈兵,肖红亮,苏理云,李恒,李刚.低压电力线通信子信道等效优化方法[J].重庆大学学报(自然科学版),2010,33(9):109-112. |
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| 作者姓名： | 李姣军 陈兵 肖红亮 苏理云 李恒 李刚 |
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| 作者单位： | 重庆理工大学,电子信息与自动化学院,重庆,400050;重庆航天火箭电子技术有限公司,重庆,400050;湖南省娄底电业局调度所,湖南,娄底,417000;重庆理工大学,数理学院,重庆,400050 |
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| 基金项目： | 重庆市自然科学基金资助项目，重庆市教委科技研究项目 |
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| 摘 要： | 根据低压电力线信道的特性,结合自适应比特和功率分配算法,提出了一种子信道等效优化方法。应用此方法在传输总比特数一定,基于发送功率最小化模型情况下,研究使用子信道优化等效方法对系统性能的影响,等效子信道优化算法将特性相同或相近的子信道放在一起考虑,不仅能减少信令负荷,还可以使频谱得到更好地利用,仿真结果表明,使用子信道优化算法后系统能获得更低的误比特率。
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| 关 键 词： | 电力线通信 子信道 正交频分复用 自适应调制 比特和功率分配 |
| 收稿时间： | 2010/5/14 0:00:00 |
An optimal equivalent subchannel algorithm for low voltage power line communication system |
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| LI Jiao jun,CHEN Bing,XIAO Hong Liang,SU Li yun,LI Heng and LI Gang.An optimal equivalent subchannel algorithm for low voltage power line communication system[J].Journal of Chongqing University(Natural Science Edition),2010,33(9):109-112. |
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| Authors: | LI Jiao jun CHEN Bing XIAO Hong Liang SU Li yun LI Heng and LI Gang |
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| Institution: | School of Electronic Information and Automation Chongqing University of Technology,Chongqing 400050,P.R.China;Chongqing Aerospace Launch Vehicle Electronic Technology CO.,LTD.,Chongqing 400050,P.R.China;Electric Power Bureau of Loudi,Loudi,Hunan 417000,P.R.China;School of Mathematics and Physics,Chongqing University of Technology,Chongqing 400050,P.R.China;School of Electronic Information and Automation Chongqing University of Technology,Chongqing 400050,P.R.China;School of Electronic Information and Automation Chongqing University of Technology,Chongqing 400050,P.R.China |
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| Abstract: | According to the low voltage power line channel features,combined with adaptive bit loading and power allocation algorithm,an optimal equivalent subchannel algorithm is proposed.Under the condition of fixed amount of transmitted bits and the minimum transmitted power model,impact of optimal equivalent subchannel on the system performance is studied.The optimization algorithm sorts subchannels with similar transmission features into groups,thus the signaling load can be reduced,and the spectrum can be better used.The simulation results show that system can get lower bit error rate(BER) by adopting optimal equivalent subchannel algorithm. |
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| Keywords: | power line communication subchannel orthogonal frequency division multiplexing(OFDM) adaptive modulation bit loading and power allocation |
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