Communication method and system with combination of electric wire communication and light communication
A technology of power line communication and communication method, applied in the field of communication methods and systems combining power line communication and optical communication, can solve the problems of complex power line structure and signal reflection, and achieve broad market prospects, convenient access, broadband high-speed The effect of signal transmission
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Embodiment 1
[0050] This embodiment presents the application of the communication method combining power line communication and optical communication proposed by the present invention in a downlink communication system oriented to broadband digital terrestrial broadcasting. The system requires downlink standard definition digital TV broadcasting service within 8MHz bandwidth. The method flow and transfer modes involved are detailed below:
[0051] S1. The transmitting end performs coding modulation, framing, and analog front-end processing on the digital signal to be transmitted according to the predetermined transmission mode, to obtain the transmitted signal and couple it to the power line for transmission;
[0052] The system bandwidth is 8MHz, the channel bandwidth is also 8MHz, the working frequency band of the power line communication system is 2-10MHz, and the LED flashing speed is 10MHz. Referring to the Chinese digital TV terrestrial broadcasting standard DTMB, the analog front-e...
Embodiment 2
[0065] This embodiment presents the application of the communication method combining power line communication and optical communication proposed by the present invention in a duplex communication system oriented to broadband wireless digital communication. In this duplex communication system, the uplink is realized by WIFI, and the downlink is realized by a combination of power line communication and optical communication. It is required to provide downlink high-definition digital TV services within a 30MHz bandwidth, and the involved method flow and transmission mode are detailed as follows:
[0066] S1. The transmitting end performs coding modulation, framing, and analog front-end processing on the digital signal to be transmitted according to the predetermined transmission mode, to obtain the transmitted signal and couple it to the power line for transmission;
[0067] The system bandwidth is 30MHz, the channel bandwidth is also 30MHz, the working frequency band of the pow...
Embodiment 3
[0082] This embodiment presents the application of the communication method combining power line communication and optical communication proposed by the present invention in a duplex communication system oriented to indoor broadband multi-service digital communication. In the duplex communication system, the uplink is realized by power line communication, and the downlink is realized by combining power line communication and optical communication. It is required to provide smart home and Internet of Things services within a 48MHz bandwidth, and the methods, procedures and transmission modes involved are detailed as follows:
[0083] S1. The transmitting end performs coding modulation, framing, and analog front-end processing on the digital signal to be transmitted according to the predetermined transmission mode, to obtain the transmitted signal and couple it to the power line for transmission;
[0084] The system bandwidth is 48MHz, the channel bandwidth is also 48MHz, the wo...
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