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A signal processing method, receiver and digital processing chip

A digital processing chip and signal processing technology, applied in the field of communication, can solve the problem of high complexity of sequence detection and achieve the effect of reducing the complexity

Active Publication Date: 2021-10-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One implementation of the current sequence detection is to use the BCJR algorithm to eliminate the influence of ISI. Taking the ISI signal with the channel memory length as m and the number of transmission bits as b as an example, the number of states corresponding to the current moment is 2 b(m-1) , the complexity of a sequence detection is exponentially related to the channel memory length m. With the increase of the channel memory length m, the complexity of the iteration increases exponentially, resulting in a higher complexity of sequence detection.

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  • A signal processing method, receiver and digital processing chip
  • A signal processing method, receiver and digital processing chip
  • A signal processing method, receiver and digital processing chip

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Embodiment Construction

[0068] The embodiment of the present application provides a signal processing method, a receiver and a digital processing chip, which reduce the complexity of sequence detection. It should be noted that the terms "first", "second", "third" and "fourth" in the specification and claims of this application and the above drawings are used to distinguish similar objects, but not to limit specific sequence or sequence. It is to be understood that the above terms are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include steps or units not explicitly listed or for these pr...

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Abstract

The embodiment of the present application discloses a signal processing method, a receiver and a digital processing chip, which are used to reduce the complexity of sequence detection. The method in the embodiment of the present application includes: the receiver acquires the service signal with intersymbol interference (ISI) to be processed, and then the receiver determines the first information transmitted from the information node set to the ISI check node set, and each ISI check node is related to the information There is a corresponding relationship between the N information nodes in the node set, N is an integer greater than or equal to 1, and N is positively correlated with the memory length of the ISI. Next, the receiver determines the direction information of the ISI check node set according to the first information The nodes aggregate the transmitted second information, and then sum the second information to obtain the first output information used for decision.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a signal processing method, a receiver and a digital processing chip. Background technique [0002] A coherent receiver with limited bandwidth will be affected by intersymbol interference (ISI), which will lead to system performance degradation. To this end, the system performance can be improved by combining a post filter, a sequence detector and a forward error correction (forward error correction, FEC) module in the coherent receiver. [0003] Among them, the soft information iteration between the sequence detector and the FEC module can further improve the system performance. Specifically, the output signal of the post filter is input to the sequence detector, and the sequence detector is used to eliminate the influence of ISI and output soft information to the FEC module. Soft information iteration between FEC modules. [0004] One implementation of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03
CPCH04L25/03006H04L25/03178H04L25/03
Inventor 刘玲肖治宇李良川
Owner HUAWEI TECH CO LTD