適用於窄頻電力線通訊 A類干擾 下之適應 性能量分配

Adaptive Power Allocation over Narrowband PowerLine Communication under Class-A Interference

林佑倫(Yu-Lun Lin)

指導教授 ： 馬席彬

國立清華大學/電機資訊學院/電機工程學系/碩士(2012年)

https://doi.org/10.6843/NTHU.2012.00708

摘要

近年來，人們對於遠程醫療的需求越來越重視，因此如何有效在資料量傳遞方面達到節省以及編碼端如何低複雜度成了重要的議題，本篇論文利用近年來新起的技術壓縮感測來達到資料壓縮的目的，但由於利用壓縮感測處理EEG訊號已有文獻探討，因此本篇論文著重於EMG訊號。
臭氧層的長期破壞也使得生態科技得到越來越多的注意與探討。 有效的資源管理變得越來越重要。 能量管理是其中一個綠化科技的重要議題。 有效且聰明的使用能量的需求已經越來越多， 電力線通訊逐漸地受到重視。
智慧電網已經在近幾年得快速的發展， 有效且即時的能量管理變得重要。 其中部分傳輸資料與管理仰賴電力線通訊。因此 電力線通訊近年來迅速的發展。
經由來傳輸電力的電力線來傳輸資料， 就不需要再增加硬體設施。 建構和維修的費用就比無線或乙太網路還低。
然而，電力線通訊受到許多像多重路徑或時變雜訊的干擾，使得系統效能損失。 我提出的接受器解決大部分的問題。 然而， 在雜訊嚴重的時候， 卻仍會造成通訊失敗。 許多的研究顯示增加一些處理雜訊的處理器能改善。 例如雜訊壓縮器， 或維特比前處理器。 然而這麼多卻在提升效能的同時， 也增加了很多硬體負擔。 資源分配也是一個很有效改善系統效能， 卻不需要太大的硬體負擔。
我提出的再傳送端使用電源分配的演算法，去改善系統。 與之前的研究比較， 在兩個規格下比較， 無論在雜訊嚴重或不嚴重的情形下， 我的可以改善數個dB。 並且只增加合理的複雜度。

關鍵字

窄頻電力線通訊 ； 能量分配

並列摘要

The ozone layer has been destructed for a long time and eco-tech gets more discussions
and attention. Effective resource management in the world become more important. Power
management is one important issue of green technology. Through the rapid demand of smart
power use and management, issues of power line gradually gets more concern.
Smart Grid, which rely on mass power line infrastructure, has rapid development in recent
years. An energy-efficiency and real-time power management is critical now and ever. Hence,
power line communication (PLC) becomes widely discussed these years. The use of power
line distribution grid for data communication has gained lot of interest over the past several
years. By establishing communication on the same power line infrastructure that delivers
electricity, there is no need to create new communication paths through obstacles such as
buildings, hills. Thus, installation and maintenance costs are lower than Ethernet or wireless
communication.
Nevertheless, PLC suffer many challenges such as multi-path fading, and time-varying
impulse noise, which is modeled as class-A noise in this thesis. The proposed receiver solve
most of the problem. Unfortunately, impulse noise is sometimes the most system degradation
factor that cause transmission fail.
Many works shows adding certain processor to deal with it for some system enhancement.
For instance, impulse noise suppressor or Viterbi preprocessor is added is their designed receiver.
However, lots of hardware overhead are simultaneously produced. Resource allocation
is a useful and effective way to improve the system without much hardware overhead.
A proposed power allocation/loading scheme added in my transmitter is for reducing the
signal distortion by fading and impulse noise. A well-known method to improve data rate
about bis/power allocation/loading is waterfilling algorithm. By contrary, my work prefer to
ii
provide power-saving or bit error rate (BER) improvement Both standards, PRIME and G3-
PLC are tested with my algorithms ad others. In severe class-A noise channel, my solution
provides 5dB gain over the best power algorithms in class-A scheme and 0.2 dB in well class-
A noise channel for PRIME system. In G3-PLC, there’re about 2.8 dB and 0.1dB respectively.
This reveals my algorithms is strongly applied in severe class-A case.

並列關鍵字

Narrowband Power Line Communication ； Power Allocation

參考文獻

[1] N. Pavlidou, A. H. Vinck, J. Yazdani, and B. Honary, “Power line communications: state

of the art and future trends,” IEEE Communications Magazine, vol. 41, no. 4, pp. 34 –

40, Apr. 2003.

[2] S. Galli, A. Scaglione, and Z. Wang, “Power line communications and the smart grid,”

in First IEEE International Conference on Smart Grid Communications (SmartGrid-