Ultrahigh-speed fiber wireless MIMO transmission system and method

Abstract

The invention provides an ultrahigh-speed fiber wireless MIMO transmission system and method. The system comprises an analog-to-digital / digital-to-analog conversion unit, a series-to-parallel / parallel-to-series conversion unit, four paths of 4QAM sequence encoding and decoding units, four paths of OFDM modulation and demodulation units, four paths of radio frequency quadrature modulation and demodulation units, a downlink optical dual-path quadrature coherent modulation unit, a downlink optical coherent demodulation photoelectric detection unit, four radio frequency filtering amplification processing units, four paths of radio frequency transmit-receive antennas, an uplink optical coherent modulation photoelectric detection unit and an uplink optical coherent demodulation photoelectric detection unit. An encoding, modulation, transmission, demodulation and access system and method are provided for high-speed fiber microwave transmission between adjacent base stations and high-speed wireless mobile receiving and transmission between the base stations and terminals in 5G (the fifth generation of mobile communication ) and 6G (the sixth generation of mobile communication ) future mobile communication systems of future wireless mobile service providers.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to the field of new generation information and communication technology, in particular to an ultra-high-speed optical fiber wireless MIMO transmission system and method. Background technique [0002] With the increasing demand for high-speed mobile data services, major domestic communication operators have implemented large-scale commercial network construction of the fourth-generation mobile communication, that is, the construction of TDD-LTE and FDD-LTE. In an ideal state, the maximum uplink transmission rate of LTE is 50Mbit / s, and the maximum downlink transmission rate is 100Mbit / s. [0003] However, if multiple users share a carrier, the rate that each user gets will be greatly reduced, even as low as 100Kbit / s. In this scenario, obviously users will not appreciate the superiority of 4GLTE high-speed communication Therefore, the 4G network and its operators' self-promot...

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Problems solved by technology

[0003] However, if multiple users share a carrier, the rate that each user gets will be greatly reduced, even as low as 100Kbit / s. In this scenario, obviously users will not appreciate the superiority of 4GLTE high-speed communication , the 4G network and its operators' self-promotional image and reputation in the hearts of users will also be greatly reduced

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