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Non-orthogonal signal processing method

A technology for non-orthogonal signals and processing methods, which is applied to the separation device of the transmission path, the sub-channel allocation of the transmission path, and the shaping network in the transmitter/receiver. It can solve the problems of limited sub-carriers and achieve equalization effect. Good, reduced complexity effect

Active Publication Date: 2021-06-29
JINAN UNIVERSITY
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for eliminating inter-carrier interference in a non-orthogonal discrete multi-tone system with less correlation between the complexity and the number of sub-carriers used. restricted question

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Embodiment Construction

[0048] The invention relates to a non-orthogonal signal processing method, which includes a sending end processing method (abbreviated as a sending method) and a receiving end processing method (abbreviated as a receiving method).

[0049] This processing method uses code-assisted iterative decoding to eliminate inter-carrier interference in a non-orthogonal discrete multi-tone system. The code here refers to channel coding with error correction capabilities. For example, the transmitting end uses convolutional code coding to increase redundancy, and the receiving end Adaptive Viterbi decoding is used to continuously correct errors using this channel coding, and then the bit error rate is updated through an iterative process and a cycle of coding and decoding. The channel coding with error correction ability makes iterative work, because if it is not for the error correction ability of coding and decoding, the result of each iteration will not change. The receiving end of the ...

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Abstract

The invention relates to the field of research of communication technology, and mainly discloses a non-orthogonal signal processing method, which adopts coding-assisted iterative decoding to eliminate inter-carrier interference in a non-orthogonal discrete multi-tone system and utilizes channel bandwidth and signal-to-noise ratio of each subcarrier to the greatest extent in combination with a bit and power distribution algorithm. According to the method for eliminating the inter-carrier interference, the complexity of the method is greatly reduced, and the complexity is not greatly correlated with the number of the used subcarriers, so the non-orthogonal discrete multi-tone system can use a large number of subcarriers, the equalization effect of a channel is better, and more importantly, the improvement of the number of the subcarriers enables the advantages brought by the bit and power distribution scheme to be more obvious, so that the channel bandwidth and the signal-to-noise ratio of each subcarrier can be utilized to the maximum extent.

Description

technical field [0001] The present invention relates to the research field of communication technology, in particular to the use of code-assisted iterative decoding in non-orthogonal discrete multi-tone systems to eliminate inter-carrier interference and combine bit and power allocation algorithms to maximize the use of channel bandwidth and signal-to-noise of each subcarrier than the data processing method. Background technique [0002] With the explosive growth of data services such as mobile Internet and big data, the capacity requirements for optical transmission systems have been greatly increased. Orthogonal Frequency Division Multiplexing (OFDM) has attracted more and more interest because of its good scalability and mature digital signal processing algorithms, and because of its high spectral efficiency. Discrete multi-tone modulation, as a variant of OFDM, inherits the advantages of OFDM, and each subcarrier has a very flexible and independent modulation format. Co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L5/00
CPCH04L25/03159H04L5/001H04L5/006
Inventor 周骥熊灿阳王海德刘伟平李朝晖
Owner JINAN UNIVERSITY
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