摘要
近年来电力线通信得到了快速的发展,但由于低压电力线信道特性异常恶劣,在使用电力线进行通信的过程中存在着各种各样的干扰和衰减,这些干扰和衰减严重影响了低压电力线的通信质量。本文在研究扩频通信和正交频分复用技术的抗干扰性能基础上,提出了新的抗干扰方案,即DS-OFDM方案,并使用MATLAB对本方案的抗干扰性能进行了仿真验证。结果表明,扩频技术和OFDM相结合能较好地抑制低压电力线信道中的干扰和衰减,该方案可广泛应用于低压电力线通信中。
In low-voltage power line exist in all kinds of interference and attenuation due to its channel characteristics exceptionally poor, they seriously affect the communication quality. The paper we discuss a combination of the two proposed new anti-jamming scheme, namely, DS-OFDM systems, based on the spread spectrum and orthogonal frequency division multiplexing. We discuss its anti interference through MATLAB. The results show that the program has strong anti-interference performance, therefore, combining OFDM and spread spectrum technology can better inhibit the low-voltage power line channel interference and fading, so can be widely used in low voltage power line communication.
出处
《电子测试》
2010年第11期19-23,共5页
Electronic Test
关键词
电力线通信
抗干扰性能
扩频通信
OFDM
DS-OFDM
voltage power line communication
Anti-interference performance
the spread spectrum
OFDM
DS-OFDM
