| Summary |
Power-line communication is wire communication, based on wireless technologies. Random errors by noise and frequency-selective time-variant propagation are inherent in PLC, such as in radio. On the other hand, since it uses power-lines as its communication media, exchange of information between devices connected to a power-line network and separated by a wall is easier with PLC than with wireless. This makes PLC an attractive candidate for smart grid communication. In this context, the costumers of PLC are not humans but machines. The influence of communication quality on control performance is important issue that is not yet well studied. As the measures of communication quality, BER and frequency efficiency are often used. But in system control, in which relatively small amount of data is transmitted with strict requirements of latency, different measures are necessary. In addition, distribution of data for synchronized operation of multiple pieces of equipment also requires a different measure of communication quality. This talk introduces relationships between communication qualities and control performance, including effects of cyclostationary features of PLC channels. Examples of communication qualities for system control are also presented. In addition, theoretical features of system control with communications are also the topic of this talk. |
(ローカル限定)