Abstract
Low-voltage power line high-speed carrier communication, abbreviated as HPLC, is a power line carrier communication technology, which is mostly used in local communication (such as meter reading) of electricity consumption information collection systems in low-voltage stations. The communication method adopts OFDM technology. Different communication frequency bands can be configured through different sub-carrier shielding schemes. The typical communication frequency bands are 2~12MHz, 2.4-5.6MHz, 1.7-3MHz, 0.7-3MHz, etc. The sampling rate is 25MHz, the subcarrier spacing is 24.414KHz, the encoding algorithm is Turbo dual binary encoding, the size of the physical block includes 5 types such as PB16, PB72, PB136, PB264, PB520, and the code rate includes 1/2 and 16/18 ,There are two types of modulation methods, such as BPSK, QPSK, QAM16, using different diversity copy modes, under different noise and channel conditions, the communication rate from 100Kbps to 1Mbps can be achieved.
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