Noise equalization method and device suitable for multi-eigenvalue nonlinear frequency division multiplexing system

• Main Authors: BAI CHENGLIN, WANG ZHIGUO, CAO LINGGUO, GE PEIYUN, FANG WENJING, YANG LISHAN, FAN XINYE, LYU XIUHUA, XU HENGYING
• Format: Patent
• Language: Chinese; English
• Published: 22.11.2022
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PHYSICS; TRANSMISSION

The invention provides a noise equalization method and device suitable for a multi-eigenvalue nonlinear frequency division multiplexing system. The method comprises the following steps: acquiring a mapping constellation point of a modulation signal of a transmitting end, an eigenvalue after NFT of a receiving end and a corresponding damaged discrete spectrum signal; calculating the disturbance of each corresponding characteristic value; preprocessing the damaged discrete spectrum signal and the characteristic value disturbance, taking the preprocessed signals as input characteristics of a complex valued neural network, and taking a mapping constellation point as a label of the network; respectively training a complex valued neural network by using the input feature and the label corresponding to each feature value to obtain a trained model, then loading to-be-balanced data into the corresponding model to carry out noise balancing processing, and finally carrying out dimension reshaping on an output signal to