基于G.hn标准协议的PLC混合ARQ方案研究与改进  

Adaptive Hybrid ARQ Scheme of PLC System Based on the G.hn Standard Protocols

作　　者：孙春凤[1] 黄廷磊[1] 

机构地区：[1]桂林电子科技大学计算机科学与工程学院,广西桂林541004

出　　处：《电视技术》2013年第17期236-240,共5页Video Engineering

摘　　要：现代电力线通信(PLC)系统为了可靠地传输数据并提高系统传输量,自动重传请求(ARQ)技术必不可少。然而ARQ技术已经很好地解决了现有通信的数据传输问题,但由于PLC信道不稳定、强干扰以及衰减非常快等缺点造成误码率极高、吞吐量低。针对PLC家庭网络提出能够适应PLC信道的H-ARQ技术来满足未来PLC通信网络的需求。改进ARQ和低密度奇偶校验(LDPC)技术相结合来提高传输率、降低误码率。最后通过仿真实验对改进的H-ARQ协议算法验证,从仿真结果可以看出误码率降低、吞吐量较高,能适应环境极其差的电力线通信。Automatic Repeat-request（ARQ）is essential that the modern power line communication（PLC）system is improved the reliable transmission of data and the amount of system transmission. However, the ARQ technique has to solve the existing problems of the data transmission of the communication. But the PLC is channel instability, strong interference and the fast of decay,which is the high of error rate and the low throughput. In this paper,H-ARQ is proposed what be able to adapt to the PLC channel in the home network of PLC,and is satisfied the demand of the PLC in the future. The combinations of the ARQ and LDPC are able to increase the transmission rate and reduce the error rate. Lastly, H-ARQ is checked by the simulation, and then shows results. From the simulation resuhs,it is reduced the error rate and high throughput,which adapted the PLC.

关 键 词：电力线通信 G HN 混合ARQ 前向纠错 

分 类 号：TN919.4[电子电信—通信与信息系统]