A signal equalization method and device
A signal equalization and signal technology, applied in electromagnetic wave transmission systems, electromagnetic receivers, optical fiber transmission, etc., can solve the problems of low equalization efficiency, large amount of calculation, large transmission matrix, etc., and achieve the goal of improving equalization efficiency and reducing the amount of matrix calculation Effect
Active Publication Date: 2018-09-11
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0004] Usually, the transmission matrix determined above is relatively large, and when using this matrix for signal equalization, the amount of calculation is large and the equalization efficiency is low
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[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0051] In order to solve the problems in the prior art, an embodiment of the present invention provides a signal equalization method and device. The signal equalization method provided by the embodiment of the present invention will firstly be introduced in detail below.
[0052] It should be noted that the embodiment of the present invention is applied to a receiving end of a multi-core multi-mode optical communication system.
[0053] figure 1 A schematic flowch...
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The embodiment of the invention discloses a signal equalization method and device, which is applied to a receiving end of a multi-core multi-mode optical communication system. The method comprises the following steps: extracting a first training sequence set from signals received through each fiber core, wherein each first training sequence set at least comprises one group of training sequences; determining a second training sequence set corresponding to each first training sequence set from a plurality of groups of training sequences pre-stored by the receiving end; determining a transmission matrix for each fiber core according to the corresponding second first training sequence set and the corresponding first training sequence set; carrying out equalization of the signals according to the corresponding transmission matrix; determining a core matrix through the resampling technology according to the signals received through all the fiber cores; and carrying out re-equalization of all the equalized signals according to the core matrix. The method and device provided by the embodiment of the invention has the advantages that the operation quantity in the signal equalization process is reduced, and the equalization efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a signal equalization method and device. Background technique [0002] In order to meet the increasing demand for capacity, transmission systems based on multi-core multi-mode optical fibers have received more and more attention. Multi-core multimode fiber has multiple cores in a common cladding area, and optical signals are transmitted in multiple cores in the same fiber, which physically realizes multiple transmissions. Moreover, each core Both can transmit multiple modes, and each mode can be used as an independent transmission channel. The multi-core multi-mode fiber uses multiple modes and multiple physical transmission channels to realize space division multiplexing, which greatly improves the transmission efficiency of the system. For multiple modes in the same fiber core, the propagation speed of each mode is different, so there is serious inter-mode...
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IPC IPC(8): H04B10/25H04B10/2581H04B10/69
CPCH04B10/2581H04B10/2589H04B10/6971
Inventor 刘博忻向军张丽佳关晓宁张琦王拥军尹霄丽田清华田凤李博文
Owner BEIJING UNIV OF POSTS & TELECOMM