4 papers
Improved ALOHA-based URA with Index Modulation: Efficient Decoding and Analysis
Linjie Yang, Pingzhi Fan, Zhiguo Ding +1
In this paper, an improved ALOHA-based unsourced random access (URA) scheme is proposed in MIMO channels. The channel coherent interval is divided into multiple sub-slots and each…
Improved Sparse Vector Code Based on Optimized Spreading Matrix for Short-Packet URLLC in mMTC
Linjie Yang, Pingzhi Fan
Recently, the sparse vector code (SVC) is emerging as a promising solution for short-packet transmission in massive machine type communication (mMTC) as well as ultra-reliable and…
Data-aided Active User Detection with False Alarm Correction in Grant-Free Transmission
Linjie Yang, Pingzhi Fan, Des McLernon +1
In most existing grant-free (GF) studies, the two key tasks, namely active user detection (AUD) and payload data decoding, are handled separately. In this paper, a two-step dataaid…
Grant-Free Transmission by LDPC Matrix Mapping and Integrated Cover-MPA Detector
Linjie Yang, Pingzhi Fan, Li Li +2
In this paper, a novel transceiver architecture is proposed to simultaneously achieve efficient random access and reliable data transmission in massive IoT networks. At the transmi…