A Model-Driven Deep Learning Algorithm for Joint Activity Detection and Channel Estimation
Yiyang Qiang, Xiaodan Shao, Xiaoming Chen
Abstract
This letter provides a deep learning framework for massive grant-free random access in 6G cellular internet of things (IoT) networks. A model-driven deep learning algorithm for joint activity detection and channel estimation is proposed based on the principle of approximate massage passing (AMP). This algorithm only needs to learn four key parameters, but not the whole algorithm architecture. More importantly, it does not require the prior information about active probabilities and channel variance, and can significantly improve the performance with a finite number of training data. Simulation results validate the effectiveness of the proposed deep learning algorithm.
Topics & Concepts
Computer scienceJoint (building)Channel (broadcasting)Deep learningKey (lock)Artificial intelligenceVariance (accounting)AlgorithmMachine learningComputer networkBusinessAccountingEngineeringComputer securityArchitectural engineeringWireless Signal Modulation ClassificationAdvanced MIMO Systems OptimizationAdvanced Wireless Communication Technologies