Title:
PROBABILISTIC SHAPED PAM-4 SIGNAL TRANSMISSION METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/227296
Kind Code:
A1
Abstract:
The present invention relates to a probabilistic shaped (PS) PAM-4 signal transmission method. The method comprises: receiving a bit sequence, and dividing the bit sequence into symbol bits and initial amplitude bits; performing distribution matching processing on the initial amplitude bits, and obtaining amplitude bits with probability distributions of "0" and "1" by means of energy level allocation; performing mapping processing on the amplitude bits and the symbol bits, so as to obtain a PS-PAM-4 signal; and sending the PS-PAM-4 signal to a receiving end, so that the receiving end performs channel equalization processing on the PS-PAM-4 signal, so as to obtain a processed output signal, and performs de-mapping and decoding processing on the output signal, so as to obtain the bit sequence. By means of the present invention, a plurality of probability distributions can be provided for any n symbol types, and constant PS encoding redundancy is provided, thereby greatly enhancing the flexibility of a system and reducing the use of an additional comparator. Moreover, in comparison with a traditional PAM-4 signal transmission method, the sensitivity of a receiver can be improved by as much as 4.2 dB, thereby achieving an ideal communication quality.
Inventors:
GAO MINGYI (CN)
LIU MENGLI (CN)
SHEN GANGXIANG (CN)
LIU MENGLI (CN)
SHEN GANGXIANG (CN)
Application Number:
PCT/CN2021/106996
Publication Date:
November 03, 2022
Filing Date:
July 19, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
H04L25/03
Foreign References:
| CN111049586A | 2020-04-21 | |||
| US10742472B1 | 2020-08-11 | |||
| CN111181652A | 2020-05-19 | |||
| US10523480B1 | 2019-12-31 | |||
| US20200280468A1 | 2020-09-03 |
Attorney, Agent or Firm:
CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)
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