Method, related equipment and system for transmitting information
A technology for transmitting information and coherence coefficient, which is applied in the field of information transmission and can solve problems such as being easily affected by the atmospheric environment and low reliability of data transmission
Active Publication Date: 2020-10-16
HUAWEI TECH CO LTD
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Problems solved by technology
[0008] However, the use of FSO between the aggregation site and the remote site is easily affected by the atmospheric environment, and the reliability of data transmission is not high
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[0094] The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation manners.
[0095] Since the aggregation site and the remote site communicate through FSO, figure 1 The transmission performance of the communication system shown is greatly affected by the atmospheric channel.
[0096] The small random changes in atmospheric temperature caused by human activities and solar radiation will lead to random changes in atmospheric wind speed, thus forming atmospheric turbulent movement. The beam intensity of the channel fluctuates, and the light spot appears random dispersion phenomenon, which is called "light intensity flicker", which will increase the noise at the receiving end and increase the bit error rate of FSO transmission. See figure 2 , figure 2 It shows the fluctuation of optical power detected by the receiving end when the light intensity flickers. Depend on figure 2 It can ...
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The present application discloses an information transmission method, related equipment and system. The method is applied to a remote site side and may comprise the following steps: receiving n beamsof downlink partial coherent light which is transmitted by a convergent station at an (i-1)th time by a remote station; based on the n beams of downlink partial coherent light transmitted at the (i-1)th time, estimating downlink atmosphere channel characteristic information at the (i-1)th time; and according to the downlink atmosphere channel characteristic information at the (i-1)th time and thedownlink atmosphere channel characteristic information at the (i-2)th time, splitting the uplink service optical signal at the i-th time to n beams of uplink partial coherent light at the i-th time, wherein the i-th uplink service optical signal is divided into the i-th time of n beams of uplink partial coherent light, wherein the i-th time of uplink service optical signal carries the first presetinformation and the i-th time of uplink service information; and transmitting the i-th upward partially coherent beam to the convergence station through the atmospheric channel. By implementing the present application, the service optical signal is divided into n beams of partially coherent light to be transmitted in an atmospheric channel, so that the effect of turbulence on information transmission in the current atmospheric channel can be resisted, and all-optical relay transmission of information can be realized.
Description
technical field [0001] The invention relates to the field of optical communication, in particular to a method for transmitting information, related equipment and a system. Background technique [0002] At present, the capacity of information transmission in modern society has increased dramatically, and the common microwave communication that transmits data through wireless microwave technology can no longer meet the current needs. Laser communication uses laser beams as information carriers to transmit information. It has the advantages of large transmission capacity, no need to apply for frequency band license, and strong anti-interference ability. It is the main development trend of future communication development. [0003] Laser communication can be divided into two forms: wired laser communication and wireless laser communication. [0004] Wired laser communication is the optical fiber communication with optical fiber as the transmission medium that has developed rapi...
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IPC IPC(8): H04B10/112H04B10/25H04B10/079H04J14/06
CPCH04B10/07953H04B10/1123H04B10/2589H04J14/06
Inventor 石晓钟赵平叶亚斌格洛特·格尔杰
Owner HUAWEI TECH CO LTD