3 papers
eess.SP2023
Joint Activity-Delay Detection and Channel Estimation for Asynchronous Massive Random Access
Xinyu Bian, Yuyi Mao, Jun Zhang
Most existing studies on joint activity detection and channel estimation for grant-free massive random access (RA) systems assume perfect synchronization among all active users, wh…
eess.SP2023
Grant-free Massive Random Access with Retransmission: Receiver Optimization and Performance Analysis
Xinyu Bian, Yuyi Mao, Jun Zhang
There is an increasing demand of massive machine-type communication (mMTC) to provide scalable access for a large number of devices, which has prompted extensive investigation on g…
cs.IT2022
Error Rate Analysis for Grant-free Massive Random Access with Short-Packet Transmission
Xinyu Bian, Yuyi Mao, Jun Zhang
Grant-free massive random access (RA) is a promising protocol to support the massive machine-type communications (mMTC) scenario in 5G and beyond networks. In this paper, we focus…