Using radio frequencies to transmit data over existing power lines both inside and outside of homes has long promised to turn legacy cabling into a more attractive asset by delivering two essential services on a single wire. But broadband over power lines (BPL) has never achieved its potential, due in part to initial low speeds and unreliability, and concerns about radio interference and electromagnetic radiation.
One company that has continued to invest in and improve BPL since 2000 is Panasonic, a multinational electronics and appliance manufacturer with headquarters in Osaka, Japan. In March of this year, the IEEE Standards Association approved the IEEE 1901a standard for BPL that covers IoT applications, and which is based on Panasonic’s upgraded HD-PLC technology.
HD-PLC (high-definition power line communications) is backward compatible with IEEE’s 1901 standard for BPL ratified in 2010. The 1901a standard implements new functions based on Panasonic’s Wavelet orthogonal frequency-division multiplexing (OFDM) technology that is also incorporated in the 2010 standard.