Power line modem

Abstract

The invention provides a power line modem which utilizes a broadband power line as a transmission medium and transmits network and telephone signals at the same time, comprising 1) an Ethernet controller which is connected with an external Internet or a PC; 2) a PHY / MAC transceiver; 3) a memory, a clock and an INT1200 analog front-end module which are connected with the PHY / MAC transceiver; 4) a transmitting filter and a receiving filter which are connected with the analog front-end module; 5) a signal amplifier; 6) a coupling circuit; 7) a network telephone controller; 8) a communication interface conversion unit; 9) an audio codec, internal and external memories, an LCD display module and a keyboard circuit; 10) a monophone. The power line modem has the beneficial effects that the powerline modem utilizes the broadband power line as the transmission medium and transmits the network and the telephone signals at the same time, thereby filtering interference signals out of the communication bandwidth, realizing the effective matching with a power line, fully utilizing the power line resources and achieving plug-and-play.

Description

technical field [0001] The invention relates to a broadband network access device, in particular to a power line modem which uses a broadband power line as a transmission medium to simultaneously transmit network and telephone signals. Background technique [0002] With the continuous expansion of Internet applications and the emergence of various new technologies, the broadband access market is developing rapidly and becoming increasingly mature. In this context, Broadband Power Line (BPL) communication is The market has become a research hotspot for many businesses. This technology uses the power grid for network communication, which can not only save the construction cost of the communication network, but also give full play to the advantages of power resources, develop the power communication industry, and provide technical means for power companies to enter the telecommunications public service , to realize the "four networks in one" of telephone, data, video and electr...

AI Technical Summary

Problems solved by technology

However, the power line is also a harsh communication medium. A large number of electrical devices are connected to it, and there are different systems and random noises. The channel is characterized by complex noise, impedance, and signal attenuation characteristics, and is time-varying and random. Large, it is difficult to become a traditional data communication carrier

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