关键词: 电力物联网, 云传输, 无线电, 正交频分复用

Abstract: The application of Internet of Things(IOT) in smart grid is the development result of information and communication technology to a certain stage, which will effectively integrate communication and power system infrastructure resources. Cloud transmission is a highly efficient and interference-immune way for broadcasting communication. In order to realize the on-line monitoring of transmission lines and improve the efficiency of electric power communications, a novel cognitive communication method is proposed for power IOT in this paper, which applys the cloud transmission technology in the cognitive radio communication. In the communicaiton scheme, a secondary link is superimposed onto the Orthogonal Frequency-Division Multiplexing(OFDM) in the frequency domain as to support the fast transmitter- receiver (Tx-Rx) interaction to improve the efficiency and reliability of the interconnected control.

Key words: power internet of things, cloud transmission, cognitive radio, OFDM