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Optical modulation system and method for wireless backhaul and cooperative communication

A cooperative communication and optical modulation technology, applied in the field of optical communication, can solve problems such as the inability to transmit wireless backhaul data and cooperative communication data at the same time, and the inability to carry large capacity, so as to save wavelength usage, increase communication bandwidth, and reduce complexity. degree and cost effects

Active Publication Date: 2020-07-24
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides an optical modulation system for wireless backhaul and cooperative communication in order to overcome the defects of the above-mentioned prior art that cannot carry large-capacity high-speed digital signals, and cannot simultaneously transmit wireless backhaul data and collaborative communication data. And an optical modulation method for wireless backhaul and cooperative communication

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  • Optical modulation system and method for wireless backhaul and cooperative communication
  • Optical modulation system and method for wireless backhaul and cooperative communication
  • Optical modulation system and method for wireless backhaul and cooperative communication

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Embodiment 1

[0027] This embodiment proposes an optical modulation system for wireless backhaul and cooperative communication, such as figure 1 As shown, it is a schematic structural diagram of an optical modulation system for wireless backhaul and cooperative communication in this embodiment.

[0028] An optical modulation system for wireless backhaul and cooperative communication proposed in this embodiment includes N optical network units 1, remote nodes 2, and optical line terminals 3, wherein the output end of the optical network unit 1 is connected to the remote The first input end of node 2 is connected, the first output end of remote node 2 is connected with the input end of optical line terminal 3, the output end of optical line terminal 3 is connected with the second input end of remote node 2, the second input end of remote node 2 The two output ends are connected to the input end of the optical network unit 1 . Wherein, N target communication base stations are respectively con...

Embodiment 2

[0038] This embodiment proposes an optical modulation method for wireless backhaul and cooperative communication, which is applied to the optical modulation system for wireless backhaul and cooperative communication proposed in Embodiment 1. Such as image 3 As shown, it is a flow chart of an optical modulation method for wireless backhaul and cooperative communication in this embodiment.

[0039] An optical modulation method for wireless backhaul and cooperative communication proposed in this embodiment includes the following steps:

[0040] S1: The optical network unit 1 performs quadrature modulation on the wireless backhaul data and the cooperative communication data of the base station to obtain an quadrature modulation signal, and transmits the quadrature modulation signal to the remote node 2 on a single-wavelength laser.

[0041] In this step, specifically, the cooperative communication data to be transmitted is input into the optical network unit 1 through the electr...

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Abstract

The invention provides an optical modulation system for wireless backhaul and cooperative communication, which comprises an optical line terminal, a remote node and a plurality of optical network units, and is characterized in that the optical network units are connected with the remote node, and the remote node is connected with the optical line terminal; each base station is connected with one optical network unit; the optical network unit comprises a laser. The optical network unit carries out quadrature modulation on uplink wireless backhaul data and cooperative communication data of the base station and carries the data on single-wavelength laser. Quadrature modulation signals are input into a remote node; part of the quadrature modulation signals are transmitted to the optical line terminal through the optical fiber to be demodulated; and the other part of quadrature modulation signals are mixed with downlink signals of the optical line terminal and then enter different optical network units, and the different optical network units separate the mixed signals and extract target cooperative communication data. The invention also provides an optical modulation method for wireless backhaul and cooperative communication.

Description

technical field [0001] The present invention relates to the technical field of optical communication, and more specifically, to an optical modulation system and method for wireless backhaul and cooperative communication. Background technique [0002] In a distributed wireless backhaul system based on Passive Optical Network (PON), while transmitting wireless backhaul signals, it is necessary to carry out multi-point cooperation between base stations, and different base stations exchange a large amount of data and Control channel status information and cooperate to improve the overall performance of the system. In order to realize the backhaul of large-capacity wireless signals and the simultaneous transmission of cooperative communication signals between base stations, it is necessary for the Optical Network Unit (ONU) and the Optical Line Terminal (OLT) to perform high-speed data transmission and correspond to High-speed, low-latency exchange of data between the ONU. [0...

Claims

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Application Information

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IPC IPC(8): H04B10/50H04B10/516H04Q11/00
CPCH04B10/504H04B10/5161H04Q11/0067
Inventor 高震森马子洋安跃华王云才秦玉文
Owner GUANGDONG UNIV OF TECH