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Blind equalization error calculation method and device

A technology of error calculation and blind equalization, applied in the field of communication, can solve the problems of complex implementation, occupation of hardware resources, increased power consumption, etc., and achieve the effect of saving hardware resources and power consumption

Active Publication Date: 2020-04-10
SANECHIPS TECH CO LTD
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  • Claims
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Problems solved by technology

[0004] However, this method requires multiple calculations, which is complicated to implement, and will cause a lot of hardware resources to be occupied and power consumption to increase.

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  • Blind equalization error calculation method and device
  • Blind equalization error calculation method and device
  • Blind equalization error calculation method and device

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Embodiment Construction

[0063] It should be noted that there are many blind equalization algorithms. The constant modulus algorithm has become the most widely used blind equalization algorithm due to its small amount of calculation. The blind equalization constant modulus algorithm realizes polarization demultiplexing by using a butterfly structure filter. , thereby making up for the signal damage caused by the non-ideality of the channel. figure 2 It is a schematic diagram of the input and output of the butterfly structure filter, such as figure 2 As shown, input signals X and Y, signal X and signal Y interfere with each other, and the part of signal X that is not interfered is H xx , the undisturbed part of the signal Y is H yy , the interference of signal Y on signal X forms H xy , the effect of signal X on signal Y forms H yx , H xx with H xy After processing, the output signal X', H yy with H yx Output signal Y' after processing. Among them, the filter tap coefficient is adaptively upd...

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Abstract

An embodiment of the present invention provides a blind equalization error calculation method. The method includes configuring initial error vector parameters, calculating the blind equalization error vector, calculating the value of MSE according to the error vector, and judging the convergence state of the equalizer according to the value of MSE. The convergence state determines whether to configure different error vector parameter sets, and then calculates the blind equalization error according to the determined error vector parameter set; the embodiment of the present invention also provides a blind equalization error calculation device.

Description

technical field [0001] The present invention relates to the communication field, in particular to a blind equalization error calculation method and device. Background technique [0002] figure 1 Application scenarios for 100G DSP processing chips. Such as figure 1 As shown, the 100G DSP processing chip is located in the 100G optical module in the 100G line card and is mainly used for digital signal processing. Before the digital signal is processed, the received optical signal needs to be converted into a digital signal. Rational characteristics, the polarization mode dispersion problem will occur in the long-distance transmission of optical signals, blind equalization technology - as an adaptive equalization technology that can equalize the channel by using only the prior information of the received sequence itself without using the training sequence, is often used used to solve this problem. [0003] For blind equalization technology, how to accurately calculate the er...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03
CPCH04L25/0307H04L25/03968H04L25/03038H04L2025/037
Inventor 彭俊峰
Owner SANECHIPS TECH CO LTD