Development of the ubiquitous network by the cable and radio fusion type high-speed power-line communication

有线和无线电融合型高速电力线通信发展泛在网络

基本信息

批准号：
15560331
负责人：
TSUZUKI Shinji
金额：
$ 2.37万
依托单位：
Ehime University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

项目摘要

Research and development of ubiquitous networks have been done energetically. As the communication method, power-line communication (PLC) was used in this research. Although the conventional PLC transmitters inject signals between 100V lines, called the normal-mode injection, the proposed transmitters inject signals between a 100V line and the earth, called the phantom-mode injection. By using these two injection methods, the twice improvement of the channel capacity is aimed.Since the power-line cable has been designed for energy transmission, the injected signals with high spectrum components cannot be sealed in the cable, but the signals are emitted though feeble to space. Then the cable works as a kind of an antenna. If many lines are wired in a closed space like the interior of a room, a weak electric-magnetic field will be filled, so that radio communications can be realized. The communication performed in such a situation is called "a cable and radio fusion type PLC". It is the purpose of this research to realize the residential ubiquitous network about 100Mbps by PLC.Phantom-mode currents mainly contribute to the electromagnetic field radiation from power lines. Even if the injected mode was normal, the mode would be partly converted to the phantom mode depending on the degree of en electrical unbalance of the power-lines. Therefore it is very important to realize an accurate measurement of the degree of en electrical unbalance. The measured unbalance can affect the channel modeling.A probe for measuring LCL (Longitudinal Conversion Loss) which is the measure of the unbalance was developed in 2003. The channel modeling technique containing the degree of balance was examined in 2004, and it showed the validity experimentally using the above-mentioned LCL probe. By using this probe, the injection/extraction method of the phantom-mode signal could realize easily.

无处不在网络的研究和开发已经精力充沛。作为通信方法，本研究使用了电力线通信（PLC）。尽管常规PLC发射器在100V线之间注入信号（称为正常模式注入），但提议的发射器在100V线和地球之间注入信号，称为幻象模式注入。通过使用这两种注入方法，瞄准了通道容量的两次提高。从电源线电缆设计用于能量传输时，带有高光谱组件的注入信号不能在电缆中密封，但是信号虽然发射到太空时都会发出。然后，电缆用作一种天线。如果将许多线路连接到一个封闭的空间，例如房间的内部，则将填充薄弱的电磁场，以便可以实现无线电通信。在这种情况下进行的通信称为“电缆和无线电融合型PLC”。这项研究的目的是通过PLC实现大约100Mbps的住宅无处不在网络，主要导致电力线的电磁场辐射。即使注射模式正常，该模式也会根据功率线的电气不平衡程度部分转换为幻影模式。因此，实现对EN电气不平衡程度的准确测量非常重要。测得的不平衡会影响通道建模。A测量LCL（纵向转化损失）的探针是在2003年开发了不平衡的度量。在2004年检查了包含平衡程度的通道建模技术，并使用上述LCL探针在实验上显示了有效性。通过使用此探针，幻像模式信号的注入/提取方法可以轻松实现。