摘要
隨著網際網路的快速發展，家庭網路逐漸成為人們注目的焦點。而一般家庭住宅的電力線挾著分布廣泛，方便又便宜的已既有之架構的優點，而可成為家庭網路良好選擇。然而在電力線傳輸上要達到高速及高穩定度一直有著技術上的問題。畢竟電力線本身非為傳輸通訊所設計。 在我們的論文裡，對通道的各項特型諸如多路徑訊號傳輸影響及各類雜訊的干擾作一些研究，並選取四個電力線多路徑的通道模型和Middleton的A類雜訊模型作為本論文模擬的通道模型。以一些HomePlug 1.0規格為基礎，比較現今數種有效之編碼應用在電力通訊上之效能。我們發現渦輪碼在一些通道模型上無法達到預期良好的效果，而使用一種具有大自由距離的籬柵碼在各類的通道裡皆可以達到較好的效果。
並列摘要
By the spread of Internet, home networking attracts much attention of people. The indoor power lines are potentially wide-spread, convenient and inexpensive “no new wire” candidate medium for data transmission. However, there are many technical problems to realize power line communication system with high rate and high reliability. After all, power lines are not devised for communication. In the thesis, we study the characteristics of power line channel like multipath effect and various types of noise. We choose four multipath channel models and take Middleton’s Class A noise as noise model in our simulation. And based on some HomePlug 1.0 Specification, we compare the performance of several effective coding on power line channel. We find that turbo code perform poorly as expected in some kind of channels, but we could always get better performance by using trellis codes with larger free distances in all channels.
並列關鍵字
power line communication參考文獻
[1]. L. T. Tang, P. L. So, E. Gunawan, Y. L. Guan, S. Chen, and T. T. Lie, “Characterization and Modeling of In-Building Power Lines for High-Speed Data Transmission,” IEEE Trans.on Power Delivery, vol. 18, No. 1, pp.69-77, January 2003.
[2]. Manfred Zimmermann, Klaus Dostert, “An Analysis of the Broadband Noise Scenario in Powerline Networks”.
[3]. Klaus Dostert, “Power-line Communication,” S&S, 2001
[4]. David Middleton, “Non-Gaussian Noise Models in Signal Processing for Telecommunications : New Methods and Results for Class A and Class B Noise Models,” IEEE Trans. on Information Theory, vol. 45, No.4, pp.1129-1149, May 1999.
[6]. Hiroki Nakagawa, Daisuke Umehara, Satoshi Denno, and Yoshiteru Morihiro, “A Decoding for Low Density Parity Check Codes over Impulsive Noise Channels,” in Proc. 2005 International Symposium on Power-Line Communications and
延伸閱讀
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