| 低压电力线信道中OFDM自适应调制技术性能分析 |
| |
| 引用本文： | 刘维周. 低压电力线信道中OFDM自适应调制技术性能分析[J]. 南京晓庄学院学报, 2006, 22(6): 7-10 |
| |
| 作者姓名： | 刘维周 |
| |
| 作者单位： | 南京晓庄学院物理系,江苏,南京,210017 |
| |
| 摘 要： | 本文介绍了OFDM自适应调制技术的原理、帧格式的设计,给出了调制方式的选取与转换准则;分析了自适应调制系统在瑞利衰落信道下的性能,并对系统进行了仿真.结果表明,在低压电力线信道环境下,自适应调制系统能够获得较高的系统容量,而系统的误比特率也可以保持在较低的水平.
|
| 关 键 词： | 自适应调制 瑞利衰落 电力线通信(PLC) 正交频分复用(OFDM) |
| 文章编号： | 1009-7902（2006）06-0007-04 |
| 收稿时间： | 2006-08-20 |
| 修稿时间： | 2006-11-19 |
Analysis of the Performance of OFDM Adaptive Modulation Under the Low Power Line Communications (PLC) |
| |
| LIU Wei-zhou. Analysis of the Performance of OFDM Adaptive Modulation Under the Low Power Line Communications (PLC)[J]. Journal of Nanjing Xiaozhuang College, 2006, 22(6): 7-10 |
| |
| Authors: | LIU Wei-zhou |
| |
| Abstract: | This article introduces the principle of adaptive modulation technology of orthogonal frequency division multiplexing(OFDM) and design of frame format.It also expatiates on the choice of modulation mode and the transition rule.Lastly,the capability of adaptive modulation system in the Raleign channel is analyzed and the system also simulated.The result shows that, under the low power line communications(PLC),adaptive modulation system can gain higher system capacity with the bit error rate of the system kept on a low level. |
| |
| Keywords: | adaptive modulation Raleign channel power line communications(PLC) orthogonal frequency division multiplexing(OFDM) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
