Related papers: Learning with Knowledge of Structure: A Neural Network-Based Approach for MIMO-OFDM Detection

Learning with Knowledge of Structure: A Neural Network-Based Approach for MIMO-OFDM Detection

URL: http://arxiv.org/abs/2012.00711v2
Date: Thu, 3 Dec 2020 00:37:58 GMT
Title: Learning with Knowledge of Structure: A Neural Network-Based Approach for MIMO-OFDM Detection
Authors: Zhou Zhou, Shashank Jere, Lizhong Zheng, Lingjia Liu
Abstract summary: Building on a reservoir computing (RC)-based approach towards symbol detection, we introduce a symmetric and decomposed binary decision neural network. We show that the introduced symmetric neural network can decompose the original $M$-ary detection problem into a series of binary classification tasks. Numerical evaluations demonstrate that the introduced hybrid RC-binary decision detection framework performs close to maximum likelihood model-based symbol detection methods.
Score: 33.46816493359834
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: In this paper, we explore neural network-based strategies for performing symbol detection in a MIMO-OFDM system. Building on a reservoir computing (RC)-based approach towards symbol detection, we introduce a symmetric and decomposed binary decision neural network to take advantage of the structure knowledge inherent in the MIMO-OFDM system. To be specific, the binary decision neural network is added in the frequency domain utilizing the knowledge of the constellation. We show that the introduced symmetric neural network can decompose the original $M$-ary detection problem into a series of binary classification tasks, thus significantly reducing the neural network detector complexity while offering good generalization performance with limited training overhead. Numerical evaluations demonstrate that the introduced hybrid RC-binary decision detection framework performs close to maximum likelihood model-based symbol detection methods in terms of symbol error rate in the low SNR regime with imperfect channel state information (CSI).